From 2206faefe02fbcee541c6806dfc4099cf566e6ce Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Fri, 10 Oct 2025 23:10:56 +0800 Subject: [PATCH 01/13] ADD file via upload --- server.js | 279 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 279 insertions(+) create mode 100644 server.js diff --git a/server.js b/server.js new file mode 100644 index 0000000..68dd165 --- /dev/null +++ b/server.js @@ -0,0 +1,279 @@ +const express = require('express'); +const cors = require('cors'); +const bodyParser = require('body-parser'); +const fs = require('fs'); +const path = require('path'); +const crypto = require('crypto'); + +// 导入工具类 +const UserManager = require('./utils/user-manager'); +const MultiEmailService = require('./utils/multi-email-service'); +const MathQuestionGenerator = require('./utils/question-generator'); + +const app = express(); +const PORT = 8080; + +// 中间件 +app.use(cors()); +app.use(bodyParser.json()); +app.use(express.static(path.join(__dirname, '../frontend'))); + +// 实例化管理器 +const userManager = new UserManager(); +const emailConfig = require('./email-config'); +const emailService = new MultiEmailService(); + +// 存储验证码（内存存储，重启后失效） +const verificationCodes = new Map(); + +// 生成验证码 +function generateVerificationCode() { + return Math.floor(100000 + Math.random() * 900000).toString(); +} + +// 验证邮箱格式 +function validateEmail(email) { + return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email); +} + +// API路由 + +// 健康检查 +app.get('/api/health', (req, res) => { + res.json({ + ok: true, + message: '服务正常运行', + emailService: emailService.transporter ? '已配置' : '测试模式' + }); +}); + +// 发送验证码 +app.post('/api/send-code', async (req, res) => { + try { + const { email, username } = req.body; + + console.log('收到发送验证码请求:', { email, username }); + + if (!email || !username) { + return res.json({ ok: false, message: '邮箱和用户名不能为空' }); + } + + // 验证邮箱格式 + if (!validateEmail(email)) { + return res.json({ ok: false, message: '邮箱格式不正确' }); + } + + // 检查用户名是否已存在 + if (userManager.findUserByUsername(username)) { + return res.json({ ok: false, message: '用户名已存在' }); + } + + // 检查邮箱是否已注册 + if (userManager.findUserByEmail(email)) { + return res.json({ ok: false, message: '邮箱已被注册' }); + } + + const code = generateVerificationCode(); + verificationCodes.set(email, { + code, + username, + timestamp: Date.now() + }); + + console.log(`为邮箱 ${email} 生成验证码: ${code}`); + + // 发送邮件 + const emailResult = await emailService.sendVerificationCode(email, code, username); + + if (emailResult.success) { + res.json({ ok: true, message: emailResult.message }); + } else { + // 如果邮件发送失败，但在开发模式下提供了验证码，仍然算成功 + if (emailResult.debug) { + res.json({ ok: true, message: emailResult.message + ' ' + emailResult.debug }); + } else { + res.json({ ok: false, message: emailResult.message }); + } + } + } catch (error) { + console.error('发送验证码错误:', error); + res.json({ ok: false, message: '服务器内部错误' }); + } +}); + +// 注册 +app.post('/api/register', (req, res) => { + try { + const { email, username, code } = req.body; + + console.log('收到注册请求:', { email, username, code }); + + if (!email || !username || !code) { + return res.json({ ok: false, message: '请填写完整信息' }); + } + + const storedData = verificationCodes.get(email); + + if (!storedData) { + return res.json({ ok: false, message: '请先获取验证码' }); + } + + // 验证码10分钟过期 + if (Date.now() - storedData.timestamp > 10 * 60 * 1000) { + verificationCodes.delete(email); + return res.json({ ok: false, message: '验证码已过期，请重新获取' }); + } + + if (storedData.code !== code) { + return res.json({ ok: false, message: '验证码不正确' }); + } + + if (storedData.username !== username) { + return res.json({ ok: false, message: '用户名与验证时不一致' }); + } + + // 创建用户 + userManager.createUser(email, username); + + // 清除验证码 + verificationCodes.delete(email); + + res.json({ ok: true, message: '注册成功，请设置密码' }); + } catch (error) { + console.error('注册错误:', error); + res.json({ ok: false, message: error.message }); + } +}); + +// 设置密码 +app.post('/api/set-password', (req, res) => { + try { + const { email, password } = req.body; + + if (!email || !password) { + return res.json({ ok: false, message: '请填写完整信息' }); + } + + userManager.setPassword(email, password); + res.json({ ok: true, message: '密码设置成功' }); + } catch (error) { + console.error('设置密码错误:', error); + res.json({ ok: false, message: error.message }); + } +}); + +// 登录 +app.post('/api/login', (req, res) => { + try { + const { account, password } = req.body; + + if (!account || !password) { + return res.json({ ok: false, message: '请填写账号和密码' }); + } + + // 通过邮箱或用户名查找用户 + let user = userManager.findUserByEmail(account); + if (!user) { + user = userManager.findUserByUsername(account); + } + + if (!user || !user.hasPassword) { + return res.json({ ok: false, message: '用户不存在' }); + } + + if (!userManager.verifyPassword(user.email, password)) { + return res.json({ ok: false, message: '密码不正确' }); + } + + res.json({ + ok: true, + message: '登录成功', + data: { + email: user.email, + username: user.username + } + }); + } catch (error) { + console.error('登录错误:', error); + res.json({ ok: false, message: error.message }); + } +}); + +// 修改密码 +app.post('/api/change-password', (req, res) => { + try { + const { email, oldPassword, newPassword } = req.body; + + if (!email || !oldPassword || !newPassword) { + return res.json({ ok: false, message: '请填写完整信息' }); + } + + userManager.changePassword(email, oldPassword, newPassword); + res.json({ ok: true, message: '密码修改成功' }); + } catch (error) { + console.error('修改密码错误:', error); + res.json({ ok: false, message: error.message }); + } +}); + +// 修改用户名 +app.post('/api/change-username', (req, res) => { + try { + const { email, username } = req.body; + + if (!email || !username) { + return res.json({ ok: false, message: '请填写完整信息' }); + } + + userManager.changeUsername(email, username); + res.json({ ok: true, message: '用户名修改成功' }); + } catch (error) { + console.error('修改用户名错误:', error); + res.json({ ok: false, message: error.message }); + } +}); + +// 获取题目 +app.get('/api/questions', (req, res) => { + try { + const { grade, count } = req.query; + + if (!grade || !count) { + return res.json({ ok: false, message: '请选择年级和题目数量' }); + } + + const countNum = parseInt(count); + if (isNaN(countNum) || countNum < 10 || countNum > 30) { + return res.json({ ok: false, message: '题目数量需在10-30之间' }); + } + + const generator = new MathQuestionGenerator(); + const questions = generator.generateQuestions(grade, countNum); + res.json({ + ok: true, + data: questions, + message: '题目生成成功' + }); + } catch (error) { + console.error('生成题目失败:', error); + res.json({ ok: false, message: '生成题目失败' }); + } +}); + +// 提供前端页面 +app.get('/', (req, res) => { + res.sendFile(path.join(__dirname, '../frontend/index.html')); +}); + +// 启动服务器 +app.listen(PORT, () => { + console.log(`========================================`); + console.log(`🎓 数学学习软件后端服务已启动`); + console.log(`📍 服务地址: http://localhost:${PORT}`); + console.log(`🌐 前端页面: http://localhost:${PORT}/`); + console.log(`🔧 API文档: http://localhost:${PORT}/api/health`); + console.log(`📧 邮箱服务: ${emailService.transporter ? '已配置' : '测试模式'}`); + console.log(`========================================`); +}); + +module.exports = app; \ No newline at end of file -- 2.34.1 From ed4d540e8a7d8df6cdf8ab0b38fe2a46ed97c673 Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Fri, 10 Oct 2025 23:11:26 +0800 Subject: [PATCH 02/13] ADD file via upload --- package-lock.json | 1243 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1243 insertions(+) create mode 100644 package-lock.json diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..01a37dc --- /dev/null +++ b/package-lock.json @@ -0,0 +1,1243 @@ +{ + "name": "math-learning-backend", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "math-learning-backend", + "version": "1.0.0", + "license": "MIT", + "dependencies": { + "body-parser": "^1.20.2", + "cors": "^2.8.5", + "express": "^4.18.2", + "nodemailer": "^6.9.7" + }, + "devDependencies": { + 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+0800 Subject: [PATCH 03/13] ADD file via upload --- package.json | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 package.json diff --git a/package.json b/package.json new file mode 100644 index 0000000..f7947b2 --- /dev/null +++ b/package.json @@ -0,0 +1,34 @@ +{ + "name": "math-learning-backend", + "version": "1.0.0", + "description": "数学学习软件后端API - 支持QQ邮箱和163邮箱验证", + "main": "server.js", + "scripts": { + "start": "node server.js", + "dev": "nodemon server.js", + "test": "echo \"后端服务测试模式\" && node server.js" + }, + "dependencies": { + "express": "^4.18.2", + "cors": "^2.8.5", + "body-parser": "^1.20.2", + "nodemailer": "^6.9.7" + }, + "devDependencies": { + "nodemon": "^3.0.1" + }, + "keywords": [ + "education", + "math", + "learning", + "email", + "qq", + "163" + ], + "author": "数学学习软件团队", + "license": "MIT", + "repository": { + "type": "git", + "url": "https://github.com/your-repo/math-learning-software" + } +} \ No newline at end of file -- 2.34.1 From 4e5ee3537a4e38b9ef3fda4c706f9b7eb4bfc7dd Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Fri, 10 Oct 2025 23:11:38 +0800 Subject: [PATCH 04/13] ADD file via upload --- email-config.js | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 email-config.js diff --git a/email-config.js b/email-config.js new file mode 100644 index 0000000..ac8293c --- /dev/null +++ b/email-config.js @@ -0,0 +1,30 @@ +// ============================================= +// ѧѧϰ - ļ +// ============================================= + + +// ==================== ѡ1: QQ ==================== +module.exports = { + service: 'qq', + auth: { + user: '3454934335@qq.com', // 滻ΪQQ + pass: 'vxhsswmmqiyvchhh' // 滻ΪQQȨ루16λ + } +}; + +// ==================== ѡ2: 163 ==================== +module.exports = { + service: '163', + auth: { + user: '18950579895@163.com',// 滻Ϊ163 + pass: 'UCgJrE7yzzd4Uz3g' // 滻Ϊ163Ȩ + } +}; + + +// ==================== ѡ3: ģʽ ==================== +// ʵʼ֤ڿ̨ʾ +// ڿͲԻ +/* +module.exports = {}; +*/ -- 2.34.1 From 7e86f0a4d4601d102a1dcdce4fe7512b58941d5e Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Fri, 10 Oct 2025 23:12:19 +0800 Subject: [PATCH 05/13] ADD file via upload --- utils/multi-email-service.js | 111 +++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 utils/multi-email-service.js diff --git a/utils/multi-email-service.js b/utils/multi-email-service.js new file mode 100644 index 0000000..f7fae43 --- /dev/null +++ b/utils/multi-email-service.js @@ -0,0 +1,111 @@ +const nodemailer = require('nodemailer'); + +class MultiEmailService { + constructor() { + this.transporters = new Map(); + this.initTransporters(); + } + + initTransporters() { + // QQ邮箱配置 + try { + const qqTransporter = nodemailer.createTransport({ + service: 'qq', + auth: { + user: '3454934335@qq.com', + pass: 'vxhsswmmqiyvchhh' + } + }); + this.transporters.set('qq', qqTransporter); + console.log('✅ QQ邮箱服务已初始化'); + } catch (error) { + console.error('❌ QQ邮箱初始化失败:', error); + } + + // 163邮箱配置 + try { + const mail163Transporter = nodemailer.createTransport({ + service: '163', + auth: { + user: '18950579895@163.com', + pass: 'UCgJrE7yzzd4Uz3g' + } + }); + this.transporters.set('163', mail163Transporter); + console.log('✅ 163邮箱服务已初始化'); + } catch (error) { + console.error('❌ 163邮箱初始化失败:', error); + } + } + + async sendVerificationCode(email, code, username) { + // 根据邮箱域名选择发件箱 + let transporter; + if (email.includes('@qq.com')) { + transporter = this.transporters.get('qq'); + } else if (email.includes('@163.com')) { + transporter = this.transporters.get('163'); + } else { + // 默认使用QQ邮箱 + transporter = this.transporters.get('qq'); + } + + if (!transporter) { + console.log(`🔧 测试模式 - 邮箱: ${email}, 验证码: ${code}`); + return { + success: true, + message: '验证码已生成（测试模式）', + debug: `验证码: ${code}` + }; + } + + const mailOptions = { + from: transporter.options.auth.user, + to: email, + subject: '数学学习软件 - 注册验证码', + html: this.generateEmailTemplate(code, username) + }; + + try { + await transporter.sendMail(mailOptions); + console.log(`✅ 验证码邮件已发送到: ${email}`); + return { success: true, message: '验证码已发送到您的邮箱' }; + } catch (error) { + console.error('❌ 邮件发送失败:', error); + return { + success: false, + message: '邮件发送失败，请稍后重试', + debug: `验证码: ${code} (请使用此验证码完成注册)` + }; + } + } + + generateEmailTemplate(code, username) { + return ` + + + + + + + +
+

🎓 数学学习软件

+

亲爱的 ${username}，您好！

+

您正在注册数学学习软件，验证码为：

+
${code}
+

验证码有效期为10分钟，请尽快完成注册。

+

如果这不是您本人的操作，请忽略此邮件。

+
+ + + `; + } +} + +module.exports = MultiEmailService; \ No newline at end of file -- 2.34.1 From 727a9f670be2440c3c2ef2e7ebf06bce2945f4e6 Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Fri, 10 Oct 2025 23:12:33 +0800 Subject: [PATCH 06/13] ADD file via upload --- utils/question-generator.js | 475 ++++++++++++++++++++++++++++++++++++ 1 file changed, 475 insertions(+) create mode 100644 utils/question-generator.js diff --git a/utils/question-generator.js b/utils/question-generator.js new file mode 100644 index 0000000..17c1852 --- /dev/null +++ b/utils/question-generator.js @@ -0,0 +1,475 @@ +const fs = require('fs'); +const path = require('path'); + +class MathQuestionGenerator { + constructor() { + // 不再保存已使用的题目到文件 + // 只在内存中记录当前试卷的题目，试卷完成后自动清除 + this.currentSessionQuestions = new Set(); + } + + generateQuestions(grade, count) { + console.log(`正在生成${grade} ${count}道题目...`); + const questions = []; + this.currentSessionQuestions.clear(); // 清除上一份试卷的记录 + + const maxAttempts = count * 20; // 防止无限循环 + let attempts = 0; + + while (questions.length < count && attempts < maxAttempts) { + attempts++; + const question = this.generateQuestion(grade); + if (!question) continue; + + const questionKey = `${grade}-${question.stem}`; + + // 只检查当前试卷内是否重复 + if (!this.currentSessionQuestions.has(questionKey)) { + questions.push(question); + this.currentSessionQuestions.add(questionKey); + console.log(`✅ 生成第${questions.length}题: ${question.stem}`); + } + } + + if (questions.length < count) { + console.warn(`⚠️ 只生成了${questions.length}道题目，未能达到要求的${count}道`); + } + + return questions; + } + + generateQuestion(grade) { + try { + switch (grade) { + case '小学': + return this.generatePrimaryQuestion(); + case '初中': + return this.generateMiddleSchoolQuestion(); + case '高中': + return this.generateHighSchoolQuestion(); + default: + return this.generatePrimaryQuestion(); + } + } catch (error) { + console.error(`生成${grade}题目时出错:`, error); + return null; + } + } + + generatePrimaryQuestion() { + // 小学题目：2-5个操作数，只能有+,-,*,/，不能有负数，结果整数 + const operations = ['+', '-', '×', '÷']; + const numOperands = Math.floor(Math.random() * 4) + 2; // 2-5个操作数 + + let expression = ''; + let correctAnswer = 0; + let attempts = 0; + + do { + expression = ''; + correctAnswer = 0; + let isValid = true; + + for (let i = 0; i < numOperands; i++) { + const num = Math.floor(Math.random() * 50) + 1; // 1-50 + if (i === 0) { + expression = num.toString(); + correctAnswer = num; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + + if (op === '÷') { + // 确保除法结果是整数 + const divisors = this.getDivisors(correctAnswer); + if (divisors.length > 0) { + const divisor = divisors[Math.floor(Math.random() * divisors.length)]; + expression += ` ÷ ${divisor}`; + correctAnswer = correctAnswer / divisor; + } else { + expression += ` × ${num}`; + correctAnswer = correctAnswer * num; + } + } else if (op === '-') { + // 确保减法结果非负 + if (correctAnswer > num) { + expression += ` - ${num}`; + correctAnswer -= num; + } else { + expression += ` + ${num}`; + correctAnswer += num; + } + } else { + expression += ` ${op} ${num}`; + if (op === '+') correctAnswer += num; + if (op === '×') correctAnswer *= num; + } + } + } + + // 验证结果是否符合要求 + if (correctAnswer < 0 || !Number.isInteger(correctAnswer)) { + isValid = false; + } + + attempts++; + if (isValid) break; + + } while (attempts < 10); + + // 如果仍然无法生成有效题目，使用简单题目 + if (correctAnswer < 0 || !Number.isInteger(correctAnswer)) { + expression = "10 + 5"; + correctAnswer = 15; + } + + const options = this.generateOptions(correctAnswer, 4, false, false); + + return { + id: `primary-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`, + stem: `计算：${expression} = ?`, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + generateMiddleSchoolQuestion() { + // 初中题目：1-5个操作数，必须包含至少一个平方或开根号运算符 + const types = ['square', 'sqrt', 'mixed_square', 'mixed_sqrt', 'power', 'combined']; + const type = types[Math.floor(Math.random() * types.length)]; + + // 1-5个操作数 + const numOperands = Math.floor(Math.random() * 5) + 1; + + let stem, correctAnswer; + + if (type === 'square') { + // 纯平方运算 + let expression = ''; + let result = 0; + const operations = ['+', '-', '×']; + + for (let i = 0; i < numOperands; i++) { + const base = Math.floor(Math.random() * 10) + 1; + if (i === 0) { + expression = `${base}²`; + result = base * base; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${base}²`; + if (op === '+') result += base * base; + else if (op === '-') result -= base * base; + else if (op === '×') result *= base * base; + } + } + stem = `计算：${expression}`; + correctAnswer = result; + } else if (type === 'sqrt') { + // 纯开根号运算 + const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225]; + let expression = ''; + let result = 0; + const operations = ['+', '-', '×']; + + for (let i = 0; i < numOperands; i++) { + const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; + if (i === 0) { + expression = `√${num}`; + result = Math.sqrt(num); + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} √${num}`; + const sqrtValue = Math.sqrt(num); + if (op === '+') result += sqrtValue; + else if (op === '-') result -= sqrtValue; + else if (op === '×') result *= sqrtValue; + } + } + stem = `计算：${expression}`; + correctAnswer = result; + } else if (type === 'mixed_square') { + // 混合运算，包含平方 + let expression = ''; + let result = 0; + const operations = ['+', '-', '×', '÷']; + + // 确保至少有一个平方运算 + const squarePosition = Math.floor(Math.random() * numOperands); + + for (let i = 0; i < numOperands; i++) { + let term; + let value; + + if (i === squarePosition) { + // 插入平方项 + const base = Math.floor(Math.random() * 10) + 1; + term = `${base}²`; + value = base * base; + } else { + // 普通数字 + const num = Math.floor(Math.random() * 20) + 1; + term = num.toString(); + value = num; + } + + if (i === 0) { + expression = term; + result = value; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${term}`; + if (op === '+') result += value; + else if (op === '-') result -= value; + else if (op === '×') result *= value; + else if (op === '÷') result /= value; + } + } + + stem = `计算：${expression}`; + correctAnswer = result; + } else if (type === 'mixed_sqrt') { + // 混合运算，包含开根号 + const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144]; + let expression = ''; + let result = 0; + const operations = ['+', '-', '×', '÷']; + + // 确保至少有一个开根号运算 + const sqrtPosition = Math.floor(Math.random() * numOperands); + + for (let i = 0; i < numOperands; i++) { + let term; + let value; + + if (i === sqrtPosition) { + // 插入开根号项 + const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; + term = `√${num}`; + value = Math.sqrt(num); + } else { + // 普通数字 + const num = Math.floor(Math.random() * 20) + 1; + term = num.toString(); + value = num; + } + + if (i === 0) { + expression = term; + result = value; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${term}`; + if (op === '+') result += value; + else if (op === '-') result -= value; + else if (op === '×') result *= value; + else if (op === '÷') result /= value; + } + } + + stem = `计算：${expression}`; + correctAnswer = result; + } else if (type === 'power') { + // 幂运算（平方） + const base = Math.floor(Math.random() * 10) + 1; + + if (numOperands === 1) { + stem = `计算：${base}²`; + correctAnswer = base * base; + } else { + let expression = `${base}²`; + let result = base * base; + const operations = ['+', '-', '×', '÷']; + + for (let i = 1; i < numOperands; i++) { + const num = Math.floor(Math.random() * 20) + 1; + const op = operations[Math.floor(Math.random() * operations.length)]; + + expression += ` ${op} ${num}`; + + if (op === '+') result += num; + else if (op === '-') result -= num; + else if (op === '×') result *= num; + else if (op === '÷') result /= num; + } + + stem = `计算：${expression}`; + correctAnswer = result; + } + } else { + // 组合运算（同时包含平方和开根号） + const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; + let expression = ''; + let result = 0; + const operations = ['+', '-', '×', '÷']; + + // 确保至少有一个平方和一个开根号 + const squarePosition = Math.floor(Math.random() * (numOperands - 1)); + const sqrtPosition = squarePosition + 1; + + for (let i = 0; i < numOperands; i++) { + let term; + let value; + + if (i === squarePosition) { + // 插入平方项 + const base = Math.floor(Math.random() * 10) + 1; + term = `${base}²`; + value = base * base; + } else if (i === sqrtPosition) { + // 插入开根号项 + const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; + term = `√${num}`; + value = Math.sqrt(num); + } else { + // 普通数字 + const num = Math.floor(Math.random() * 20) + 1; + term = num.toString(); + value = num; + } + + if (i === 0) { + expression = term; + result = value; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${term}`; + if (op === '+') result += value; + else if (op === '-') result -= value; + else if (op === '×') result *= value; + else if (op === '÷') result /= value; + } + } + + stem = `计算：${expression}`; + correctAnswer = result; + } + + // 确保答案是数字且合理 + if (typeof correctAnswer === 'number') { + correctAnswer = Math.round(correctAnswer * 100) / 100; // 保留两位小数 + } + + const options = this.generateOptions(correctAnswer, 4, true, false); + + return { + id: `middle-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`, + stem: stem, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + generateHighSchoolQuestion() { + // 高中题目：1-5个操作数，必须包含sin,cos,tan，可以有小数 + const functions = ['sin', 'cos', 'tan']; + const func = functions[Math.floor(Math.random() * functions.length)]; + const angles = [0, 30, 45, 60, 90, 120, 135, 150, 180, 210, 225, 240, 270, 300, 315, 330, 360]; + const angle = angles[Math.floor(Math.random() * angles.length)]; + + let correctAnswer; + switch (func) { + case 'sin': + correctAnswer = Math.round(Math.sin(angle * Math.PI / 180) * 100) / 100; + break; + case 'cos': + correctAnswer = Math.round(Math.cos(angle * Math.PI / 180) * 100) / 100; + break; + case 'tan': + if (angle % 180 === 90) { + correctAnswer = '不存在'; + } else { + correctAnswer = Math.round(Math.tan(angle * Math.PI / 180) * 100) / 100; + } + break; + } + + let stem = `计算：${func}(${angle}°)`; + + // 添加额外操作数（0-3个） + const extraOperands = Math.floor(Math.random() * 4); + if (extraOperands > 0 && correctAnswer !== '不存在') { + const operations = ['+', '-', '×', '÷']; + for (let i = 0; i < extraOperands; i++) { + const op = operations[Math.floor(Math.random() * operations.length)]; + const num = Math.floor(Math.random() * 10) + 1; + stem += ` ${op} ${num}`; + + switch (op) { + case '+': correctAnswer += num; break; + case '-': correctAnswer -= num; break; + case '×': correctAnswer *= num; break; + case '÷': correctAnswer = Math.round((correctAnswer / num) * 100) / 100; break; + } + } + } + + stem += ' = ?'; + const options = this.generateOptions(correctAnswer, 4, true, correctAnswer === '不存在'); + + return { + id: `high-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`, + stem: stem, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + generateOptions(correctAnswer, count, allowDecimal = false, isTrigSpecial = false) { + const options = []; + const keys = ['A', 'B', 'C', 'D']; + const correctIndex = Math.floor(Math.random() * count); + + for (let i = 0; i < count; i++) { + let value; + if (i === correctIndex) { + value = correctAnswer; + } else { + if (isTrigSpecial && correctAnswer === '不存在') { + const wrongOptions = ['0', '1', '-1', '∞']; + value = wrongOptions[Math.floor(Math.random() * wrongOptions.length)]; + // 确保错误选项不重复 + while (options.some(opt => opt.text === value)) { + value = wrongOptions[Math.floor(Math.random() * wrongOptions.length)]; + } + } else if (typeof correctAnswer === 'number') { + // 生成接近但错误的答案 + let attempts = 0; + do { + const deviation = (Math.random() - 0.5) * 4; + value = allowDecimal ? + Math.round((correctAnswer + deviation) * 100) / 100 : + Math.round(correctAnswer + deviation); + attempts++; + if (attempts > 10) { + // 如果无法生成合适的错误答案，使用简单偏移 + value = correctAnswer + (i + 1); + if (!allowDecimal) value = Math.round(value); + break; + } + } while (value === correctAnswer || + (!allowDecimal && !Number.isInteger(value)) || + options.some(opt => opt.text === value.toString())); + } else { + // 生成随机字符串作为错误选项 + value = Math.random().toString(36).substring(2, 6); + } + } + + options.push({ + key: keys[i], + text: value.toString(), + isCorrect: i === correctIndex + }); + } + + return options; + } + + getDivisors(n) { + const divisors = []; + for (let i = 2; i <= n; i++) { + if (n % i === 0) divisors.push(i); + } + return divisors; + } +} + +module.exports = MathQuestionGenerator; \ No newline at end of file -- 2.34.1 From 66a7778e517585bc90720ca06a4ff36c0f7f7b3e Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Fri, 10 Oct 2025 23:12:43 +0800 Subject: [PATCH 07/13] ADD file via upload --- utils/user-manager.js | 160 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 160 insertions(+) create mode 100644 utils/user-manager.js diff --git a/utils/user-manager.js b/utils/user-manager.js new file mode 100644 index 0000000..2f3e63f --- /dev/null +++ b/utils/user-manager.js @@ -0,0 +1,160 @@ +const fs = require('fs'); +const path = require('path'); +const crypto = require('crypto'); + +const USERS_FILE = path.join(__dirname, '../data/users.json'); + +class UserManager { + constructor() { + this.ensureDataFile(); + } + + ensureDataFile() { + const dataDir = path.dirname(USERS_FILE); + if (!fs.existsSync(dataDir)) { + fs.mkdirSync(dataDir, { recursive: true }); + } + if (!fs.existsSync(USERS_FILE)) { + fs.writeFileSync(USERS_FILE, JSON.stringify([])); + } + } + + readUsers() { + try { + return JSON.parse(fs.readFileSync(USERS_FILE, 'utf8')); + } catch (error) { + console.error('读取用户数据失败:', error); + return []; + } + } + + writeUsers(users) { + try { + fs.writeFileSync(USERS_FILE, JSON.stringify(users, null, 2)); + return true; + } catch (error) { + console.error('写入用户数据失败:', error); + return false; + } + } + + hashPassword(password) { + return crypto.createHash('sha256').update(password).digest('hex'); + } + + validatePassword(password) { + if (!password || password.length < 6 || password.length > 10) { + return false; + } + const hasUpper = /[A-Z]/.test(password); + const hasLower = /[a-z]/.test(password); + const hasDigit = /\d/.test(password); + return hasUpper && hasLower && hasDigit; + } + + findUserByEmail(email) { + const users = this.readUsers(); + return users.find(user => user.email === email); + } + + findUserByUsername(username) { + const users = this.readUsers(); + return users.find(user => user.username === username); + } + + createUser(email, username) { + const users = this.readUsers(); + + // 严格检查邮箱是否已存在 + if (users.some(user => user.email === email)) { + throw new Error('邮箱已被注册，每个邮箱只能注册一个账户'); + } + + // 检查用户名是否已存在 + if (users.some(user => user.username === username)) { + throw new Error('用户名已存在'); + } + + const newUser = { + email, + username, + registeredAt: new Date().toISOString(), + hasPassword: false + }; + + users.push(newUser); + if (this.writeUsers(users)) { + console.log(`✅ 新用户注册: ${username} (${email})`); + return newUser; + } else { + throw new Error('用户创建失败'); + } + } + + setPassword(email, password) { + const users = this.readUsers(); + const userIndex = users.findIndex(user => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + if (!this.validatePassword(password)) { + throw new Error('密码需6-10位且包含大小写字母和数字'); + } + + users[userIndex].password = this.hashPassword(password); + users[userIndex].hasPassword = true; + users[userIndex].updatedAt = new Date().toISOString(); + + if (this.writeUsers(users)) { + console.log(`✅ 用户设置密码: ${email}`); + return true; + } else { + throw new Error('密码设置失败'); + } + } + + verifyPassword(email, password) { + const user = this.findUserByEmail(email); + if (!user || !user.hasPassword) { + return false; + } + return user.password === this.hashPassword(password); + } + + changePassword(email, oldPassword, newPassword) { + if (!this.verifyPassword(email, oldPassword)) { + throw new Error('原密码不正确'); + } + + return this.setPassword(email, newPassword); + } + + changeUsername(email, newUsername) { + const users = this.readUsers(); + const userIndex = users.findIndex(user => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + // 检查新用户名是否已存在（排除当前用户） + if (users.some(user => user.username === newUsername && user.email !== email)) { + throw new Error('用户名已存在'); + } + + const oldUsername = users[userIndex].username; + users[userIndex].username = newUsername; + users[userIndex].updatedAt = new Date().toISOString(); + + if (this.writeUsers(users)) { + console.log(`✅ 用户修改用户名: ${oldUsername} -> ${newUsername}`); + return true; + } else { + throw new Error('用户名修改失败'); + } + } +} + +module.exports = UserManager; \ No newline at end of file -- 2.34.1 From 817e84413afe99f028c24f32e16c179b6e777983 Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Sun, 12 Oct 2025 14:36:32 +0800 Subject: [PATCH 08/13] =?UTF-8?q?=E5=90=8E=E7=AB=AF?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/email-config.js | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/email-config.js diff --git a/src/email-config.js b/src/email-config.js new file mode 100644 index 0000000..d2d4aac --- /dev/null +++ b/src/email-config.js @@ -0,0 +1,31 @@ +// ============================================= +// 数学学习软件 - 邮箱配置文件 +// ============================================= + + +// ==================== 选择1: QQ邮箱服务 ==================== +module.exports = { + service: 'qq', + auth: { + user: '3454934335@qq.com', // 替换为你的QQ邮箱 + pass: 'vxhsswmmqiyvchhh' // 替换为QQ邮箱授权码（16位） + } +}; + +// ==================== 选择2: 163邮箱服务 ==================== +module.exports = { + service: '163', + auth: { + user: '18950579895@163.com',// 替换为你的163邮箱 + pass: 'UCgJrE7yzzd4Uz3g' // 替换为163邮箱授权码 + } +}; + + +// ==================== 选择3: 测试模式 ==================== +// 不发送实际邮件，验证码在控制台显示 +// 适用于开发和测试环境 +/* +module.exports = {}; +*/ + -- 2.34.1 From 06d3f48e98a51606cfc53911e072c4e3577d9705 Mon Sep 17 00:00:00 2001 From: hnu202301120109 <3454934335@qq.com> Date: Sun, 12 Oct 2025 14:39:06 +0800 Subject: [PATCH 09/13] ADD file via upload --- src/package.json | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 src/package.json diff --git a/src/package.json b/src/package.json new file mode 100644 index 0000000..b4df712 --- /dev/null +++ b/src/package.json @@ -0,0 +1,35 @@ +{ + "name": "math-learning-backend", + "version": "1.0.0", + "description": "数学学习软件后端API - 支持QQ邮箱和163邮箱验证", + "main": "server.js", + "scripts": { + "start": "node server.js", + "dev": "nodemon server.js", + "test": "echo \"后端服务测试模式\" && node server.js" + }, + "dependencies": { + "express": "^4.18.2", + "cors": "^2.8.5", + "body-parser": "^1.20.2", + "nodemailer": "^6.9.7" + }, + "devDependencies": { + "nodemon": "^3.0.1" + }, + "keywords": [ + "education", + "math", + "learning", + "email", + "qq", + "163" + ], + "author": "数学学习软件团队", + "license": "MIT", + "repository": { + "type": "git", + "url": "https://github.com/your-repo/math-learning-software" + } +} + -- 2.34.1 From 83f926382f94f1288b1f0ee3ee187ba858c733b2 Mon Sep 17 00:00:00 2001 From: wwb <3454934335@qq.com> Date: Sun, 12 Oct 2025 14:41:05 +0800 Subject: [PATCH 10/13] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=89=80=E6=9C=89?= =?UTF-8?q?=E7=8E=B0=E6=9C=89=E6=96=87=E4=BB=B6?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- README.md | 2 - email-config.js | 30 - package-lock.json | 1243 ---------------------------------- package.json | 34 - server.js | 279 -------- src/email-config.js | 31 - src/package.json | 35 - utils/multi-email-service.js | 111 --- utils/question-generator.js | 475 ------------- utils/user-manager.js | 160 ----- 10 files changed, 2400 deletions(-) delete mode 100644 README.md delete mode 100644 email-config.js delete mode 100644 package-lock.json delete mode 100644 package.json delete mode 100644 server.js delete mode 100644 src/email-config.js delete mode 100644 src/package.json delete mode 100644 utils/multi-email-service.js delete mode 100644 utils/question-generator.js delete mode 100644 utils/user-manager.js diff --git a/README.md b/README.md deleted file mode 100644 index cfbbb51..0000000 --- a/README.md +++ /dev/null @@ -1,2 +0,0 @@ -# Pair - diff --git a/email-config.js b/email-config.js deleted file mode 100644 index ac8293c..0000000 --- a/email-config.js +++ /dev/null @@ -1,30 +0,0 @@ -// ============================================= -// ѧѧϰ - ļ -// ============================================= - - -// ==================== ѡ1: QQ ==================== -module.exports = { - service: 'qq', - auth: { - user: '3454934335@qq.com', // 滻ΪQQ - pass: 'vxhsswmmqiyvchhh' // 滻ΪQQȨ루16λ - } -}; - -// ==================== ѡ2: 163 ==================== -module.exports = { - service: '163', - auth: { - user: '18950579895@163.com',// 滻Ϊ163 - pass: 'UCgJrE7yzzd4Uz3g' // 滻Ϊ163Ȩ - } -}; - - -// ==================== ѡ3: ģʽ ==================== -// ʵʼ֤ڿ̨ʾ -// ڿͲԻ -/* -module.exports = {}; -*/ diff --git a/package-lock.json b/package-lock.json deleted file mode 100644 index 01a37dc..0000000 --- a/package-lock.json +++ /dev/null @@ -1,1243 +0,0 @@ -{ - "name": 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"https://github.com/your-repo/math-learning-software" - } -} \ No newline at end of file diff --git a/server.js b/server.js deleted file mode 100644 index 68dd165..0000000 --- a/server.js +++ /dev/null @@ -1,279 +0,0 @@ -const express = require('express'); -const cors = require('cors'); -const bodyParser = require('body-parser'); -const fs = require('fs'); -const path = require('path'); -const crypto = require('crypto'); - -// 导入工具类 -const UserManager = require('./utils/user-manager'); -const MultiEmailService = require('./utils/multi-email-service'); -const MathQuestionGenerator = require('./utils/question-generator'); - -const app = express(); -const PORT = 8080; - -// 中间件 -app.use(cors()); -app.use(bodyParser.json()); -app.use(express.static(path.join(__dirname, '../frontend'))); - -// 实例化管理器 -const userManager = new UserManager(); -const emailConfig = require('./email-config'); -const emailService = new MultiEmailService(); - -// 存储验证码（内存存储，重启后失效） -const verificationCodes = new Map(); - -// 生成验证码 -function generateVerificationCode() { - return Math.floor(100000 + Math.random() * 900000).toString(); -} - -// 验证邮箱格式 -function validateEmail(email) { - return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email); -} - -// API路由 - -// 健康检查 -app.get('/api/health', (req, res) => { - res.json({ - ok: true, - message: '服务正常运行', - emailService: emailService.transporter ? '已配置' : '测试模式' - }); -}); - -// 发送验证码 -app.post('/api/send-code', async (req, res) => { - try { - const { email, username } = req.body; - - console.log('收到发送验证码请求:', { email, username }); - - if (!email || !username) { - return res.json({ ok: false, message: '邮箱和用户名不能为空' }); - } - - // 验证邮箱格式 - if (!validateEmail(email)) { - return res.json({ ok: false, message: '邮箱格式不正确' }); - } - - // 检查用户名是否已存在 - if (userManager.findUserByUsername(username)) { - return res.json({ ok: false, message: '用户名已存在' }); - } - - // 检查邮箱是否已注册 - if (userManager.findUserByEmail(email)) { - return res.json({ ok: false, message: '邮箱已被注册' }); - } - - const code = generateVerificationCode(); - verificationCodes.set(email, { - code, - username, - timestamp: Date.now() - }); - - console.log(`为邮箱 ${email} 生成验证码: ${code}`); - - // 发送邮件 - const emailResult = await emailService.sendVerificationCode(email, code, username); - - if (emailResult.success) { - res.json({ ok: true, message: emailResult.message }); - } else { - // 如果邮件发送失败，但在开发模式下提供了验证码，仍然算成功 - if (emailResult.debug) { - res.json({ ok: true, message: emailResult.message + ' ' + emailResult.debug }); - } else { - res.json({ ok: false, message: emailResult.message }); - } - } - } catch (error) { - console.error('发送验证码错误:', error); - res.json({ ok: false, message: '服务器内部错误' }); - } -}); - -// 注册 -app.post('/api/register', (req, res) => { - try { - const { email, username, code } = req.body; - - console.log('收到注册请求:', { email, username, code }); - - if (!email || !username || !code) { - return res.json({ ok: false, message: '请填写完整信息' }); - } - - const storedData = verificationCodes.get(email); - - if (!storedData) { - return res.json({ ok: false, message: '请先获取验证码' }); - } - - // 验证码10分钟过期 - if (Date.now() - storedData.timestamp > 10 * 60 * 1000) { - verificationCodes.delete(email); - return res.json({ ok: false, message: '验证码已过期，请重新获取' }); - } - - if (storedData.code !== code) { - return res.json({ ok: false, message: '验证码不正确' }); - } - - if (storedData.username !== username) { - return res.json({ ok: false, message: '用户名与验证时不一致' }); - } - - // 创建用户 - userManager.createUser(email, username); - - // 清除验证码 - verificationCodes.delete(email); - - res.json({ ok: true, message: '注册成功，请设置密码' }); - } catch (error) { - console.error('注册错误:', error); - res.json({ ok: false, message: error.message }); - } -}); - -// 设置密码 -app.post('/api/set-password', (req, res) => { - try { - const { email, password } = req.body; - - if (!email || !password) { - return res.json({ ok: false, message: '请填写完整信息' }); - } - - userManager.setPassword(email, password); - res.json({ ok: true, message: '密码设置成功' }); - } catch (error) { - console.error('设置密码错误:', error); - res.json({ ok: false, message: error.message }); - } -}); - -// 登录 -app.post('/api/login', (req, res) => { - try { - const { account, password } = req.body; - - if (!account || !password) { - return res.json({ ok: false, message: '请填写账号和密码' }); - } - - // 通过邮箱或用户名查找用户 - let user = userManager.findUserByEmail(account); - if (!user) { - user = userManager.findUserByUsername(account); - } - - if (!user || !user.hasPassword) { - return res.json({ ok: false, message: '用户不存在' }); - } - - if (!userManager.verifyPassword(user.email, password)) { - return res.json({ ok: false, message: '密码不正确' }); - } - - res.json({ - ok: true, - message: '登录成功', - data: { - email: user.email, - username: user.username - } - }); - } catch (error) { - console.error('登录错误:', error); - res.json({ ok: false, message: error.message }); - } -}); - -// 修改密码 -app.post('/api/change-password', (req, res) => { - try { - const { email, oldPassword, newPassword } = req.body; - - if (!email || !oldPassword || !newPassword) { - return res.json({ ok: false, message: '请填写完整信息' }); - } - - userManager.changePassword(email, oldPassword, newPassword); - res.json({ ok: true, message: '密码修改成功' }); - } catch (error) { - console.error('修改密码错误:', error); - res.json({ ok: false, message: error.message }); - } -}); - -// 修改用户名 -app.post('/api/change-username', (req, res) => { - try { - const { email, username } = req.body; - - if (!email || !username) { - return res.json({ ok: false, message: '请填写完整信息' }); - } - - userManager.changeUsername(email, username); - res.json({ ok: true, message: '用户名修改成功' }); - } catch (error) { - console.error('修改用户名错误:', error); - res.json({ ok: false, message: error.message }); - } -}); - -// 获取题目 -app.get('/api/questions', (req, res) => { - try { - const { grade, count } = req.query; - - if (!grade || !count) { - return res.json({ ok: false, message: '请选择年级和题目数量' }); - } - - const countNum = parseInt(count); - if (isNaN(countNum) || countNum < 10 || countNum > 30) { - return res.json({ ok: false, message: '题目数量需在10-30之间' }); - } - - const generator = new MathQuestionGenerator(); - const questions = generator.generateQuestions(grade, countNum); - res.json({ - ok: true, - data: questions, - message: '题目生成成功' - }); - } catch (error) { - console.error('生成题目失败:', error); - res.json({ ok: false, message: '生成题目失败' }); - } -}); - -// 提供前端页面 -app.get('/', (req, res) => { - res.sendFile(path.join(__dirname, '../frontend/index.html')); -}); - -// 启动服务器 -app.listen(PORT, () => { - console.log(`========================================`); - console.log(`🎓 数学学习软件后端服务已启动`); - console.log(`📍 服务地址: http://localhost:${PORT}`); - console.log(`🌐 前端页面: http://localhost:${PORT}/`); - console.log(`🔧 API文档: http://localhost:${PORT}/api/health`); - console.log(`📧 邮箱服务: ${emailService.transporter ? '已配置' : '测试模式'}`); - console.log(`========================================`); -}); - -module.exports = app; \ No newline at end of file diff --git a/src/email-config.js b/src/email-config.js deleted file mode 100644 index d2d4aac..0000000 --- a/src/email-config.js +++ /dev/null @@ -1,31 +0,0 @@ -// ============================================= -// 数学学习软件 - 邮箱配置文件 -// ============================================= - - -// ==================== 选择1: QQ邮箱服务 ==================== -module.exports = { - service: 'qq', - auth: { - user: '3454934335@qq.com', // 替换为你的QQ邮箱 - pass: 'vxhsswmmqiyvchhh' // 替换为QQ邮箱授权码（16位） - } -}; - -// ==================== 选择2: 163邮箱服务 ==================== -module.exports = { - service: '163', - auth: { - user: '18950579895@163.com',// 替换为你的163邮箱 - pass: 'UCgJrE7yzzd4Uz3g' // 替换为163邮箱授权码 - } -}; - - -// ==================== 选择3: 测试模式 ==================== -// 不发送实际邮件，验证码在控制台显示 -// 适用于开发和测试环境 -/* -module.exports = {}; -*/ - diff --git a/src/package.json b/src/package.json deleted file mode 100644 index b4df712..0000000 --- a/src/package.json +++ /dev/null @@ -1,35 +0,0 @@ -{ - "name": "math-learning-backend", - "version": "1.0.0", - "description": "数学学习软件后端API - 支持QQ邮箱和163邮箱验证", - "main": "server.js", - "scripts": { - "start": "node server.js", - "dev": "nodemon server.js", - "test": "echo \"后端服务测试模式\" && node server.js" - }, - "dependencies": { - "express": "^4.18.2", - "cors": "^2.8.5", - "body-parser": "^1.20.2", - "nodemailer": "^6.9.7" - }, - "devDependencies": { - "nodemon": "^3.0.1" - }, - "keywords": [ - "education", - "math", - "learning", - "email", - "qq", - "163" - ], - "author": "数学学习软件团队", - "license": "MIT", - "repository": { - "type": "git", - "url": "https://github.com/your-repo/math-learning-software" - } -} - diff --git a/utils/multi-email-service.js b/utils/multi-email-service.js deleted file mode 100644 index f7fae43..0000000 --- a/utils/multi-email-service.js +++ /dev/null @@ -1,111 +0,0 @@ -const nodemailer = require('nodemailer'); - -class MultiEmailService { - constructor() { - this.transporters = new Map(); - this.initTransporters(); - } - - initTransporters() { - // QQ邮箱配置 - try { - const qqTransporter = nodemailer.createTransport({ - service: 'qq', - auth: { - user: '3454934335@qq.com', - pass: 'vxhsswmmqiyvchhh' - } - }); - this.transporters.set('qq', qqTransporter); - console.log('✅ QQ邮箱服务已初始化'); - } catch (error) { - console.error('❌ QQ邮箱初始化失败:', error); - } - - // 163邮箱配置 - try { - const mail163Transporter = nodemailer.createTransport({ - service: '163', - auth: { - user: '18950579895@163.com', - pass: 'UCgJrE7yzzd4Uz3g' - } - }); - this.transporters.set('163', mail163Transporter); - console.log('✅ 163邮箱服务已初始化'); - } catch (error) { - console.error('❌ 163邮箱初始化失败:', error); - } - } - - async sendVerificationCode(email, code, username) { - // 根据邮箱域名选择发件箱 - let transporter; - if (email.includes('@qq.com')) { - transporter = this.transporters.get('qq'); - } else if (email.includes('@163.com')) { - transporter = this.transporters.get('163'); - } else { - // 默认使用QQ邮箱 - transporter = this.transporters.get('qq'); - } - - if (!transporter) { - console.log(`🔧 测试模式 - 邮箱: ${email}, 验证码: ${code}`); - return { - success: true, - message: '验证码已生成（测试模式）', - debug: `验证码: ${code}` - }; - } - - const mailOptions = { - from: transporter.options.auth.user, - to: email, - subject: '数学学习软件 - 注册验证码', - html: this.generateEmailTemplate(code, username) - }; - - try { - await transporter.sendMail(mailOptions); - console.log(`✅ 验证码邮件已发送到: ${email}`); - return { success: true, message: '验证码已发送到您的邮箱' }; - } catch (error) { - console.error('❌ 邮件发送失败:', error); - return { - success: false, - message: '邮件发送失败，请稍后重试', - debug: `验证码: ${code} (请使用此验证码完成注册)` - }; - } - } - - generateEmailTemplate(code, username) { - return ` - - - - - - - -
-

🎓 数学学习软件

-

亲爱的 ${username}，您好！

-

您正在注册数学学习软件，验证码为：

-
${code}
-

验证码有效期为10分钟，请尽快完成注册。

-

如果这不是您本人的操作，请忽略此邮件。

-
- - - `; - } -} - -module.exports = MultiEmailService; \ No newline at end of file diff --git a/utils/question-generator.js b/utils/question-generator.js deleted file mode 100644 index 17c1852..0000000 --- a/utils/question-generator.js +++ /dev/null @@ -1,475 +0,0 @@ -const fs = require('fs'); -const path = require('path'); - -class MathQuestionGenerator { - constructor() { - // 不再保存已使用的题目到文件 - // 只在内存中记录当前试卷的题目，试卷完成后自动清除 - this.currentSessionQuestions = new Set(); - } - - generateQuestions(grade, count) { - console.log(`正在生成${grade} ${count}道题目...`); - const questions = []; - this.currentSessionQuestions.clear(); // 清除上一份试卷的记录 - - const maxAttempts = count * 20; // 防止无限循环 - let attempts = 0; - - while (questions.length < count && attempts < maxAttempts) { - attempts++; - const question = this.generateQuestion(grade); - if (!question) continue; - - const questionKey = `${grade}-${question.stem}`; - - // 只检查当前试卷内是否重复 - if (!this.currentSessionQuestions.has(questionKey)) { - questions.push(question); - this.currentSessionQuestions.add(questionKey); - console.log(`✅ 生成第${questions.length}题: ${question.stem}`); - } - } - - if (questions.length < count) { - console.warn(`⚠️ 只生成了${questions.length}道题目，未能达到要求的${count}道`); - } - - return questions; - } - - generateQuestion(grade) { - try { - switch (grade) { - case '小学': - return this.generatePrimaryQuestion(); - case '初中': - return this.generateMiddleSchoolQuestion(); - case '高中': - return this.generateHighSchoolQuestion(); - default: - return this.generatePrimaryQuestion(); - } - } catch (error) { - console.error(`生成${grade}题目时出错:`, error); - return null; - } - } - - generatePrimaryQuestion() { - // 小学题目：2-5个操作数，只能有+,-,*,/，不能有负数，结果整数 - const operations = ['+', '-', '×', '÷']; - const numOperands = Math.floor(Math.random() * 4) + 2; // 2-5个操作数 - - let expression = ''; - let correctAnswer = 0; - let attempts = 0; - - do { - expression = ''; - correctAnswer = 0; - let isValid = true; - - for (let i = 0; i < numOperands; i++) { - const num = Math.floor(Math.random() * 50) + 1; // 1-50 - if (i === 0) { - expression = num.toString(); - correctAnswer = num; - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - - if (op === '÷') { - // 确保除法结果是整数 - const divisors = this.getDivisors(correctAnswer); - if (divisors.length > 0) { - const divisor = divisors[Math.floor(Math.random() * divisors.length)]; - expression += ` ÷ ${divisor}`; - correctAnswer = correctAnswer / divisor; - } else { - expression += ` × ${num}`; - correctAnswer = correctAnswer * num; - } - } else if (op === '-') { - // 确保减法结果非负 - if (correctAnswer > num) { - expression += ` - ${num}`; - correctAnswer -= num; - } else { - expression += ` + ${num}`; - correctAnswer += num; - } - } else { - expression += ` ${op} ${num}`; - if (op === '+') correctAnswer += num; - if (op === '×') correctAnswer *= num; - } - } - } - - // 验证结果是否符合要求 - if (correctAnswer < 0 || !Number.isInteger(correctAnswer)) { - isValid = false; - } - - attempts++; - if (isValid) break; - - } while (attempts < 10); - - // 如果仍然无法生成有效题目，使用简单题目 - if (correctAnswer < 0 || !Number.isInteger(correctAnswer)) { - expression = "10 + 5"; - correctAnswer = 15; - } - - const options = this.generateOptions(correctAnswer, 4, false, false); - - return { - id: `primary-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`, - stem: `计算：${expression} = ?`, - options: options, - answer: options.find(opt => opt.isCorrect).key - }; - } - - generateMiddleSchoolQuestion() { - // 初中题目：1-5个操作数，必须包含至少一个平方或开根号运算符 - const types = ['square', 'sqrt', 'mixed_square', 'mixed_sqrt', 'power', 'combined']; - const type = types[Math.floor(Math.random() * types.length)]; - - // 1-5个操作数 - const numOperands = Math.floor(Math.random() * 5) + 1; - - let stem, correctAnswer; - - if (type === 'square') { - // 纯平方运算 - let expression = ''; - let result = 0; - const operations = ['+', '-', '×']; - - for (let i = 0; i < numOperands; i++) { - const base = Math.floor(Math.random() * 10) + 1; - if (i === 0) { - expression = `${base}²`; - result = base * base; - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} ${base}²`; - if (op === '+') result += base * base; - else if (op === '-') result -= base * base; - else if (op === '×') result *= base * base; - } - } - stem = `计算：${expression}`; - correctAnswer = result; - } else if (type === 'sqrt') { - // 纯开根号运算 - const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225]; - let expression = ''; - let result = 0; - const operations = ['+', '-', '×']; - - for (let i = 0; i < numOperands; i++) { - const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; - if (i === 0) { - expression = `√${num}`; - result = Math.sqrt(num); - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} √${num}`; - const sqrtValue = Math.sqrt(num); - if (op === '+') result += sqrtValue; - else if (op === '-') result -= sqrtValue; - else if (op === '×') result *= sqrtValue; - } - } - stem = `计算：${expression}`; - correctAnswer = result; - } else if (type === 'mixed_square') { - // 混合运算，包含平方 - let expression = ''; - let result = 0; - const operations = ['+', '-', '×', '÷']; - - // 确保至少有一个平方运算 - const squarePosition = Math.floor(Math.random() * numOperands); - - for (let i = 0; i < numOperands; i++) { - let term; - let value; - - if (i === squarePosition) { - // 插入平方项 - const base = Math.floor(Math.random() * 10) + 1; - term = `${base}²`; - value = base * base; - } else { - // 普通数字 - const num = Math.floor(Math.random() * 20) + 1; - term = num.toString(); - value = num; - } - - if (i === 0) { - expression = term; - result = value; - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} ${term}`; - if (op === '+') result += value; - else if (op === '-') result -= value; - else if (op === '×') result *= value; - else if (op === '÷') result /= value; - } - } - - stem = `计算：${expression}`; - correctAnswer = result; - } else if (type === 'mixed_sqrt') { - // 混合运算，包含开根号 - const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144]; - let expression = ''; - let result = 0; - const operations = ['+', '-', '×', '÷']; - - // 确保至少有一个开根号运算 - const sqrtPosition = Math.floor(Math.random() * numOperands); - - for (let i = 0; i < numOperands; i++) { - let term; - let value; - - if (i === sqrtPosition) { - // 插入开根号项 - const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; - term = `√${num}`; - value = Math.sqrt(num); - } else { - // 普通数字 - const num = Math.floor(Math.random() * 20) + 1; - term = num.toString(); - value = num; - } - - if (i === 0) { - expression = term; - result = value; - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} ${term}`; - if (op === '+') result += value; - else if (op === '-') result -= value; - else if (op === '×') result *= value; - else if (op === '÷') result /= value; - } - } - - stem = `计算：${expression}`; - correctAnswer = result; - } else if (type === 'power') { - // 幂运算（平方） - const base = Math.floor(Math.random() * 10) + 1; - - if (numOperands === 1) { - stem = `计算：${base}²`; - correctAnswer = base * base; - } else { - let expression = `${base}²`; - let result = base * base; - const operations = ['+', '-', '×', '÷']; - - for (let i = 1; i < numOperands; i++) { - const num = Math.floor(Math.random() * 20) + 1; - const op = operations[Math.floor(Math.random() * operations.length)]; - - expression += ` ${op} ${num}`; - - if (op === '+') result += num; - else if (op === '-') result -= num; - else if (op === '×') result *= num; - else if (op === '÷') result /= num; - } - - stem = `计算：${expression}`; - correctAnswer = result; - } - } else { - // 组合运算（同时包含平方和开根号） - const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; - let expression = ''; - let result = 0; - const operations = ['+', '-', '×', '÷']; - - // 确保至少有一个平方和一个开根号 - const squarePosition = Math.floor(Math.random() * (numOperands - 1)); - const sqrtPosition = squarePosition + 1; - - for (let i = 0; i < numOperands; i++) { - let term; - let value; - - if (i === squarePosition) { - // 插入平方项 - const base = Math.floor(Math.random() * 10) + 1; - term = `${base}²`; - value = base * base; - } else if (i === sqrtPosition) { - // 插入开根号项 - const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; - term = `√${num}`; - value = Math.sqrt(num); - } else { - // 普通数字 - const num = Math.floor(Math.random() * 20) + 1; - term = num.toString(); - value = num; - } - - if (i === 0) { - expression = term; - result = value; - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} ${term}`; - if (op === '+') result += value; - else if (op === '-') result -= value; - else if (op === '×') result *= value; - else if (op === '÷') result /= value; - } - } - - stem = `计算：${expression}`; - correctAnswer = result; - } - - // 确保答案是数字且合理 - if (typeof correctAnswer === 'number') { - correctAnswer = Math.round(correctAnswer * 100) / 100; // 保留两位小数 - } - - const options = this.generateOptions(correctAnswer, 4, true, false); - - return { - id: `middle-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`, - stem: stem, - options: options, - answer: options.find(opt => opt.isCorrect).key - }; - } - generateHighSchoolQuestion() { - // 高中题目：1-5个操作数，必须包含sin,cos,tan，可以有小数 - const functions = ['sin', 'cos', 'tan']; - const func = functions[Math.floor(Math.random() * functions.length)]; - const angles = [0, 30, 45, 60, 90, 120, 135, 150, 180, 210, 225, 240, 270, 300, 315, 330, 360]; - const angle = angles[Math.floor(Math.random() * angles.length)]; - - let correctAnswer; - switch (func) { - case 'sin': - correctAnswer = Math.round(Math.sin(angle * Math.PI / 180) * 100) / 100; - break; - case 'cos': - correctAnswer = Math.round(Math.cos(angle * Math.PI / 180) * 100) / 100; - break; - case 'tan': - if (angle % 180 === 90) { - correctAnswer = '不存在'; - } else { - correctAnswer = Math.round(Math.tan(angle * Math.PI / 180) * 100) / 100; - } - break; - } - - let stem = `计算：${func}(${angle}°)`; - - // 添加额外操作数（0-3个） - const extraOperands = Math.floor(Math.random() * 4); - if (extraOperands > 0 && correctAnswer !== '不存在') { - const operations = ['+', '-', '×', '÷']; - for (let i = 0; i < extraOperands; i++) { - const op = operations[Math.floor(Math.random() * operations.length)]; - const num = Math.floor(Math.random() * 10) + 1; - stem += ` ${op} ${num}`; - - switch (op) { - case '+': correctAnswer += num; break; - case '-': correctAnswer -= num; break; - case '×': correctAnswer *= num; break; - case '÷': correctAnswer = Math.round((correctAnswer / num) * 100) / 100; break; - } - } - } - - stem += ' = ?'; - const options = this.generateOptions(correctAnswer, 4, true, correctAnswer === '不存在'); - - return { - id: `high-${Date.now()}-${Math.random().toString(36).substr(2, 9)}`, - stem: stem, - options: options, - answer: options.find(opt => opt.isCorrect).key - }; - } - - generateOptions(correctAnswer, count, allowDecimal = false, isTrigSpecial = false) { - const options = []; - const keys = ['A', 'B', 'C', 'D']; - const correctIndex = Math.floor(Math.random() * count); - - for (let i = 0; i < count; i++) { - let value; - if (i === correctIndex) { - value = correctAnswer; - } else { - if (isTrigSpecial && correctAnswer === '不存在') { - const wrongOptions = ['0', '1', '-1', '∞']; - value = wrongOptions[Math.floor(Math.random() * wrongOptions.length)]; - // 确保错误选项不重复 - while (options.some(opt => opt.text === value)) { - value = wrongOptions[Math.floor(Math.random() * wrongOptions.length)]; - } - } else if (typeof correctAnswer === 'number') { - // 生成接近但错误的答案 - let attempts = 0; - do { - const deviation = (Math.random() - 0.5) * 4; - value = allowDecimal ? - Math.round((correctAnswer + deviation) * 100) / 100 : - Math.round(correctAnswer + deviation); - attempts++; - if (attempts > 10) { - // 如果无法生成合适的错误答案，使用简单偏移 - value = correctAnswer + (i + 1); - if (!allowDecimal) value = Math.round(value); - break; - } - } while (value === correctAnswer || - (!allowDecimal && !Number.isInteger(value)) || - options.some(opt => opt.text === value.toString())); - } else { - // 生成随机字符串作为错误选项 - value = Math.random().toString(36).substring(2, 6); - } - } - - options.push({ - key: keys[i], - text: value.toString(), - isCorrect: i === correctIndex - }); - } - - return options; - } - - getDivisors(n) { - const divisors = []; - for (let i = 2; i <= n; i++) { - if (n % i === 0) divisors.push(i); - } - return divisors; - } -} - -module.exports = MathQuestionGenerator; \ No newline at end of file diff --git a/utils/user-manager.js b/utils/user-manager.js deleted file mode 100644 index 2f3e63f..0000000 --- a/utils/user-manager.js +++ /dev/null @@ -1,160 +0,0 @@ -const fs = require('fs'); -const path = require('path'); -const crypto = require('crypto'); - -const USERS_FILE = path.join(__dirname, '../data/users.json'); - -class UserManager { - constructor() { - this.ensureDataFile(); - } - - ensureDataFile() { - const dataDir = path.dirname(USERS_FILE); - if (!fs.existsSync(dataDir)) { - fs.mkdirSync(dataDir, { recursive: true }); - } - if (!fs.existsSync(USERS_FILE)) { - fs.writeFileSync(USERS_FILE, JSON.stringify([])); - } - } - - readUsers() { - try { - return JSON.parse(fs.readFileSync(USERS_FILE, 'utf8')); - } catch (error) { - console.error('读取用户数据失败:', error); - return []; - } - } - - writeUsers(users) { - try { - fs.writeFileSync(USERS_FILE, JSON.stringify(users, null, 2)); - return true; - } catch (error) { - console.error('写入用户数据失败:', error); - return false; - } - } - - hashPassword(password) { - return crypto.createHash('sha256').update(password).digest('hex'); - } - - validatePassword(password) { - if (!password || password.length < 6 || password.length > 10) { - return false; - } - const hasUpper = /[A-Z]/.test(password); - const hasLower = /[a-z]/.test(password); - const hasDigit = /\d/.test(password); - return hasUpper && hasLower && hasDigit; - } - - findUserByEmail(email) { - const users = this.readUsers(); - return users.find(user => user.email === email); - } - - findUserByUsername(username) { - const users = this.readUsers(); - return users.find(user => user.username === username); - } - - createUser(email, username) { - const users = this.readUsers(); - - // 严格检查邮箱是否已存在 - if (users.some(user => user.email === email)) { - throw new Error('邮箱已被注册，每个邮箱只能注册一个账户'); - } - - // 检查用户名是否已存在 - if (users.some(user => user.username === username)) { - throw new Error('用户名已存在'); - } - - const newUser = { - email, - username, - registeredAt: new Date().toISOString(), - hasPassword: false - }; - - users.push(newUser); - if (this.writeUsers(users)) { - console.log(`✅ 新用户注册: ${username} (${email})`); - return newUser; - } else { - throw new Error('用户创建失败'); - } - } - - setPassword(email, password) { - const users = this.readUsers(); - const userIndex = users.findIndex(user => user.email === email); - - if (userIndex === -1) { - throw new Error('用户不存在'); - } - - if (!this.validatePassword(password)) { - throw new Error('密码需6-10位且包含大小写字母和数字'); - } - - users[userIndex].password = this.hashPassword(password); - users[userIndex].hasPassword = true; - users[userIndex].updatedAt = new Date().toISOString(); - - if (this.writeUsers(users)) { - console.log(`✅ 用户设置密码: ${email}`); - return true; - } else { - throw new Error('密码设置失败'); - } - } - - verifyPassword(email, password) { - const user = this.findUserByEmail(email); - if (!user || !user.hasPassword) { - return false; - } - return user.password === this.hashPassword(password); - } - - changePassword(email, oldPassword, newPassword) { - if (!this.verifyPassword(email, oldPassword)) { - throw new Error('原密码不正确'); - } - - return this.setPassword(email, newPassword); - } - - changeUsername(email, newUsername) { - const users = this.readUsers(); - const userIndex = users.findIndex(user => user.email === email); - - if (userIndex === -1) { - throw new Error('用户不存在'); - } - - // 检查新用户名是否已存在（排除当前用户） - if (users.some(user => user.username === newUsername && user.email !== email)) { - throw new Error('用户名已存在'); - } - - const oldUsername = users[userIndex].username; - users[userIndex].username = newUsername; - users[userIndex].updatedAt = new Date().toISOString(); - - if (this.writeUsers(users)) { - console.log(`✅ 用户修改用户名: ${oldUsername} -> ${newUsername}`); - return true; - } else { - throw new Error('用户名修改失败'); - } - } -} - -module.exports = UserManager; \ No newline at end of file -- 2.34.1 From 5dc760d3120c6cee5fef30e6b37607efde5efa29 Mon Sep 17 00:00:00 2001 From: wwb <3454934335@qq.com> Date: Sun, 12 Oct 2025 14:47:45 +0800 Subject: [PATCH 11/13] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E6=96=B0=E6=96=87?= =?UTF-8?q?=E4=BB=B6=EF=BC=9A=E6=8F=8F=E8=BF=B0=E6=96=87=E4=BB=B6=E5=86=85?= =?UTF-8?q?=E5=AE=B9?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/backend/data/users.json | 16 + src/backend/email-config.js | 31 + src/backend/package-lock.json | 1243 ++++++++++++++++++++++ src/backend/package.json | 35 + src/backend/server.js | 310 ++++++ src/backend/utils/multi-email-service.js | 104 ++ src/backend/utils/question-generator.js | 441 ++++++++ src/backend/utils/user-manager.js | 183 ++++ 8 files changed, 2363 insertions(+) create mode 100644 src/backend/data/users.json create mode 100644 src/backend/email-config.js create mode 100644 src/backend/package-lock.json create mode 100644 src/backend/package.json create mode 100644 src/backend/server.js create mode 100644 src/backend/utils/multi-email-service.js create mode 100644 src/backend/utils/question-generator.js create mode 100644 src/backend/utils/user-manager.js diff --git a/src/backend/data/users.json b/src/backend/data/users.json new file mode 100644 index 0000000..ea595de --- /dev/null +++ b/src/backend/data/users.json @@ -0,0 +1,16 @@ +[ + { + "email": "3454934335@qq.com", + "username": "wwb", + "registeredAt": "2025-10-11T05:26:22.038Z", + "password": "cc43f52af644042612d98dea06cf5b64d8e2f8af1de8065fe83b208f4a6d8875", + "updatedAt": "2025-10-11T05:26:22.051Z" + }, + { + "email": "3063485007@qq.com", + "username": "wqs", + "registeredAt": "2025-10-11T19:08:09.303Z", + "password": "be0c664d19564b568c4dd76d00a26a08ee89214877e52225eee5ffefab36c15f", + "updatedAt": "2025-10-11T19:08:26.339Z" + } +] \ No newline at end of file diff --git a/src/backend/email-config.js b/src/backend/email-config.js new file mode 100644 index 0000000..5a4c8e7 --- /dev/null +++ b/src/backend/email-config.js @@ -0,0 +1,31 @@ +// ============================================= +// 数学学习软件 - 邮箱配置文件 +// ============================================= + + +// ==================== 选择1: QQ邮箱服务 ==================== +module.exports = { + service: 'qq', + auth: { + user: '3454934335@qq.com', // 替换为你的QQ邮箱 + pass: 'vxhsswmmqiyvchhh' // 替换为QQ邮箱授权码（16位） + } +}; + +// ==================== 选择2: 163邮箱服务 ==================== +module.exports = { + service: '163', + auth: { + user: '18950579895@163.com',// 替换为你的163邮箱 + pass: 'UCgJrE7yzzd4Uz3g' // 替换为163邮箱授权码 + } +}; + + +// ==================== 选择3: 测试模式 ==================== +// 不发送实际邮件，验证码在控制台显示 +// 适用于开发和测试环境 +/* +module.exports = {}; +*/ + diff --git a/src/backend/package-lock.json b/src/backend/package-lock.json new file mode 100644 index 0000000..52de788 --- /dev/null +++ b/src/backend/package-lock.json @@ -0,0 +1,1243 @@ +{ + "name": "math-learning-backend", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "math-learning-backend", + "version": "1.0.0", + "license": "MIT", + "dependencies": { + "body-parser": "^1.20.2", + "cors": "^2.8.5", + "express": "^4.18.2", + "nodemailer": "^6.9.7" + }, + "devDependencies": { + "nodemon": "^3.0.1" + } + }, + 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"resolved": "https://registry.npmmirror.com/vary/-/vary-1.1.2.tgz", + "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==", + "license": "MIT", + "engines": { + "node": ">= 0.8" + } + } + } +} diff --git a/src/backend/package.json b/src/backend/package.json new file mode 100644 index 0000000..2d33a16 --- /dev/null +++ b/src/backend/package.json @@ -0,0 +1,35 @@ +{ + "name": "math-learning-backend", + "version": "1.0.0", + "description": "数学学习软件后端API - 支持QQ邮箱和163邮箱验证", + "main": "server.js", + "scripts": { + "start": "node server.js", + "dev": "nodemon server.js", + "test": "echo \"后端服务测试模式\" && node server.js" + }, + "dependencies": { + "express": "^4.18.2", + "cors": "^2.8.5", + "body-parser": "^1.20.2", + "nodemailer": "^6.9.7" + }, + "devDependencies": { + "nodemon": "^3.0.1" + }, + "keywords": [ + "education", + "math", + "learning", + "email", + "qq", + "163" + ], + "author": "数学学习软件团队", + "license": "MIT", + "repository": { + "type": "git", + "url": "https://github.com/your-repo/math-learning-software" + } +} + diff --git a/src/backend/server.js b/src/backend/server.js new file mode 100644 index 0000000..5896e8b --- /dev/null +++ b/src/backend/server.js @@ -0,0 +1,310 @@ +const express = require('express'); +const cors = require('cors'); +const bodyParser = require('body-parser'); +const fs = require('fs'); +const path = require('path'); +const crypto = require('crypto'); + +// 导入工具类 +const UserManager = require('./utils/user-manager'); +const MultiEmailService = require('./utils/multi-email-service'); +const MathQuestionGenerator = require('./utils/question-generator'); + +// 创建Express应用实例 +const app = express(); +const PORT = 8080; + +// 配置中间件 +app.use(cors()); +app.use(bodyParser.json()); +app.use(express.static(path.join(__dirname, '../project4'))); + +// 实例化管理器 +const userManager = new UserManager(); +const emailService = new MultiEmailService(); + +// 存储验证码（内存存储，重启后失效） +const verificationCodes = new Map(); + +// 生成6位数字验证码 +function generateVerificationCode() { + return Math.floor(100000 + Math.random() * 900000).toString(); +} + +// 验证邮箱格式是否正确 +function validateEmail(email) { + return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email); +} + +// API路由 + +// 检查服务器健康状态 +app.get('/api/health', (req, res) => { + res.json({ + ok: true, + message: '服务正常运行', + emailService: emailService.transporter ? '已配置' : '测试模式' + }); +}); + +// 发送邮箱验证码 +app.post('/api/send-code', async (req, res) => { + try { + const {email, username} = req.body; + + console.log('收到发送验证码请求:', {email, username}); + + if (!email || !username) { + return res.json({ok: false, message: '邮箱和用户名不能为空'}); + } + + // 验证邮箱格式 + if (!validateEmail(email)) { + return res.json({ok: false, message: '邮箱格式不正确'}); + } + + // 限制邮箱域名，只允许QQ邮箱和163邮箱 + if (!email.includes('@qq.com') && !email.includes('@163.com')) { + return res.json({ok: false, message: '只支持QQ邮箱和163邮箱'}); + } + + // 检查用户名是否已存在 + if (userManager.findUserByUsername(username)) { + return res.json({ok: false, message: '用户名已存在'}); + } + + // 检查邮箱是否已注册 + if (userManager.findUserByEmail(email)) { + return res.json({ok: false, message: '邮箱已被注册'}); + } + + const code = generateVerificationCode(); + verificationCodes.set(email, { + code, + username, + timestamp: Date.now(), + }); + + console.log(`为邮箱 ${email} 生成验证码: ${code}`); + + // 发送邮件 + const emailResult = await emailService.sendVerificationCode(email, code, username); + + if (emailResult.success) { + res.json({ok: true, message: emailResult.message}); + } else { + // 如果邮件发送失败，但在开发模式下提供了验证码，仍然算成功 + if (emailResult.debug) { + res.json({ok: true, message: emailResult.message + ' ' + emailResult.debug}); + } else { + res.json({ok: false, message: emailResult.message}); + } + } + } catch (error) { + console.error('发送验证码错误:', error); + res.json({ok: false, message: '服务器内部错误'}); + } +}); + +// 验证码验证 +app.post('/api/verify-code', (req, res) => { + try { + const {email, username, code} = req.body; + + console.log('收到验证码验证请求:', {email, username, code}); + + if (!email || !username || !code) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + const storedData = verificationCodes.get(email); + + if (!storedData) { + return res.json({ok: false, message: '请先获取验证码'}); + } + + // 验证码10分钟过期 + if (Date.now() - storedData.timestamp > 10 * 60 * 1000) { + verificationCodes.delete(email); + return res.json({ok: false, message: '验证码已过期，请重新获取'}); + } + + if (storedData.code !== code) { + return res.json({ok: false, message: '验证码不正确'}); + } + + if (storedData.username !== username) { + return res.json({ok: false, message: '用户名与验证时不一致'}); + } + + // 清除验证码 + verificationCodes.delete(email); + + res.json({ok: true, message: '验证成功，请设置密码'}); + } catch (error) { + console.error('验证码验证错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 注册（创建用户 + 设置密码） +app.post('/api/register', (req, res) => { + try { + const {email, username, password} = req.body; + + console.log('收到注册请求:', {email, username}); + + if (!email || !username || !password) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + // 创建用户并设置密码 + userManager.createUser(email, username); + userManager.setPassword(email, password); + + res.json({ok: true, message: '注册成功'}); + } catch (error) { + console.error('注册错误:', error); + res.json({ok: false, message: error.message}); + } +}); + + +// 登录 +app.post('/api/login', (req, res) => { + try { + const {account, password} = req.body; + + if (!account || !password) { + return res.json({ok: false, message: '请填写账号和密码'}); + } + + // 通过邮箱或用户名查找用户 + let user = userManager.findUserByEmail(account); + if (!user) { + user = userManager.findUserByUsername(account); + } + + if (!user || !user.password) { + return res.json({ok: false, message: '用户不存在'}); + } + + if (!userManager.verifyPassword(user.email, password)) { + return res.json({ok: false, message: '密码不正确'}); + } + + res.json({ + ok: true, + message: '登录成功', + data: { + email: user.email, + username: user.username, + }, + }); + } catch (error) { + console.error('登录错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 修改密码 +app.post('/api/change-password', (req, res) => { + try { + const {email, oldPassword, newPassword} = req.body; + + if (!email || !oldPassword || !newPassword) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + userManager.changePassword(email, oldPassword, newPassword); + res.json({ok: true, message: '密码修改成功'}); + } catch (error) { + console.error('修改密码错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 修改用户名 +app.post('/api/change-username', (req, res) => { + try { + const {email, username} = req.body; + + if (!email || !username) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + userManager.changeUsername(email, username); + res.json({ok: true, message: '用户名修改成功'}); + } catch (error) { + console.error('修改用户名错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 删除账号 +app.post('/api/delete-account', (req, res) => { + try { + const {email, password} = req.body; + + if (!email || !password) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + // 验证密码 + if (!userManager.verifyPassword(email, password)) { + return res.json({ok: false, message: '密码不正确'}); + } + + userManager.deleteUser(email); + res.json({ok: true, message: '账号删除成功'}); + } catch (error) { + console.error('删除账号错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 获取题目 +app.get('/api/questions', (req, res) => { + try { + const {grade, count} = req.query; + + if (!grade || !count) { + return res.json({ok: false, message: '请选择年级和题目数量'}); + } + + const countNum = parseInt(count); + if (isNaN(countNum) || countNum < 10 || countNum > 30) { + return res.json({ok: false, message: '题目数量需在10-30之间'}); + } + + const generator = new MathQuestionGenerator(); + const questions = generator.generateQuestions(grade, countNum); + res.json({ + ok: true, + data: questions, + message: '题目生成成功', + }); + } catch (error) { + console.error('生成题目失败:', error); + res.json({ok: false, message: '生成题目失败'}); + } +}); + +// 提供前端页面 +app.get('/', (req, res) => { + res.sendFile(path.join(__dirname, '../project4/index.html')); +}); + +// 启动服务器 +app.listen(PORT, () => { + console.log(`========================================`); + console.log(`🎓 数学学习软件后端服务已启动`); + console.log(`📍 服务地址: http://localhost:${PORT}`); + console.log(`🌐 前端页面: http://localhost:${PORT}/`); + console.log(`🔧 API文档: http://localhost:${PORT}/api/health`); + console.log(`📧 邮箱服务: ${emailService.transporter ? '已配置' : '测试模式'}`); + console.log(`========================================`); +}); + +module.exports = app; + diff --git a/src/backend/utils/multi-email-service.js b/src/backend/utils/multi-email-service.js new file mode 100644 index 0000000..bba61fb --- /dev/null +++ b/src/backend/utils/multi-email-service.js @@ -0,0 +1,104 @@ +const nodemailer = require('nodemailer'); + +// 多邮箱服务类，支持多种邮箱服务商 +class MultiEmailService { + constructor() { + this.transporters = new Map(); + this.initTransporters(); + } + + // 初始化各种邮箱服务商的传输器 + initTransporters() { + // QQ邮箱配置 + try { + // 修改 + const qqTransporter = nodemailer.createTransport({ + auth: { + pass: 'vxhsswmmqiyvchhh', + user: '3454934335@qq.com', + }, + service: 'qq', + }); + this.transporters.set('qq', qqTransporter); + console.log('✅ QQ邮箱服务已初始化'); + } catch (error) { + console.error('❌ QQ邮箱初始化失败:', error); + } + + // 163邮箱配置 + try { + // 修改 + const mail163Transporter = nodemailer.createTransport({ + auth: { + pass: 'UCgJrE7yzzd4Uz3g', + user: '18950579895@163.com', + }, + service: '163', + }); + this.transporters.set('163', mail163Transporter); + console.log('✅ 163邮箱服务已初始化'); + } catch (error) { + console.error('❌ 163邮箱初始化失败:', error); + } + } + + // 发送验证码邮件 + async sendVerificationCode(email, code, username) { + // 根据邮箱域名选择发件箱 + let transporter = email.includes('@qq.com') ? this.transporters.get('qq') : + email.includes('@163.com') ? this.transporters.get('163') : + this.transporters.get('qq'); + + if (!transporter) { + console.log(`🔧 测试模式 - 邮箱: ${email}, 验证码: ${code}`); + return {success: true, message: '验证码已生成（测试模式）', debug: `验证码: ${code}`}; + } + + const mailOptions = { + from: transporter.options.auth.user, + to: email, + subject: '数学学习软件 - 注册验证码', + html: this.generateEmailTemplate(code, username) + }; + + try { + await transporter.sendMail(mailOptions); + console.log(`✅ 验证码邮件已发送到: ${email}`); + return {success: true, message: '验证码已发送到您的邮箱'}; + } catch (error) { + console.error('❌ 邮件发送失败:', error); + return {success: false, message: '邮件发送失败，请稍后重试', debug: `验证码: ${code} (请使用此验证码完成注册)`}; + } + } + + // 生成邮件HTML模板 + generateEmailTemplate(code, username) { + return ` + + + + + + + +
+

🎓 数学学习软件

+

亲爱的 ${username}，您好！

+

您正在注册数学学习软件，验证码为：

+
${code}
+

验证码有效期为10分钟，请尽快完成注册。

+

如果这不是您本人的操作，请忽略此邮件。

+
+ + + `; + } +} + +module.exports = MultiEmailService; + diff --git a/src/backend/utils/question-generator.js b/src/backend/utils/question-generator.js new file mode 100644 index 0000000..2457bc6 --- /dev/null +++ b/src/backend/utils/question-generator.js @@ -0,0 +1,441 @@ +const fs = require('fs'); +const path = require('path'); + +class MathQuestionGenerator { + constructor() { + this.currentSessionQuestions = new Set(); + } + + // 生成指定年级和数量的题目 + generateQuestions(grade, count) { + console.log(`正在生成${grade} ${count}道题目...`); + const questions = []; + this.currentSessionQuestions.clear(); + + const maxAttempts = count * 20; + let attempts = 0; + + while (questions.length < count && attempts < maxAttempts) { + attempts++; + const question = this.generateQuestion(grade); + if (!question) { + continue; + } + + const questionKey = `${grade}-${question.stem}`; + + if (!this.currentSessionQuestions.has(questionKey)) { + questions.push(question); + this.currentSessionQuestions.add(questionKey); + console.log(`✅ 生成第${questions.length}题: ${question.stem}`); + } + } + + if (questions.length < count) { + console.warn(`⚠️ 只生成了${questions.length}道题目，未能达到要求的${count}道`); + } + + return questions; + } + + // 根据年级生成单个题目 + generateQuestion(grade) { + try { + switch (grade) { + case '小学': + return this.generatePrimaryQuestion(); + case '初中': + return this.generateMiddleSchoolQuestion(); + case '高中': + return this.generateHighSchoolQuestion(); + default: + return this.generatePrimaryQuestion(); + } + } catch (error) { + console.error(`生成${grade}题目时出错:`, error); + return null; + } + } + + // 生成小学题目（2-5个操作数，基础四则运算） + generatePrimaryQuestion() { + const numOperands = Math.floor(Math.random() * 4) + 2; + const operations = ['+', '-', '×', '÷']; + let expression = ''; + let correctAnswer = 0; + + for (let i = 0; i < numOperands; i++) { + const num = Math.floor(Math.random() * 100) + 1; + if (i === 0) { + expression = num.toString(); + correctAnswer = num; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${num}`; + correctAnswer = this.applyOperation(correctAnswer, num, op); + } + } + + correctAnswer = this.calculateWithPriority(expression); + if (numOperands >= 3 && Math.random() < 0.3) { + const result = this.addParentheses(expression, correctAnswer); + if (result) { + expression = result.expression; + correctAnswer = result.answer; + } + } + + const options = this.generateOptions(correctAnswer, 4); + return { + id: `primary-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, + stem: `计算：${expression} = ?`, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + // 生成初中题目（1-5个操作数，包含平方和开方） + generateMiddleSchoolQuestion() { + const numOperands = Math.floor(Math.random() * 5) + 1; + const operations = ['+', '-', '×', '÷']; + const specialPosition = Math.floor(Math.random() * numOperands); + const isSquare = Math.random() < 0.5; + let expression = ''; + let correctAnswer = 0; + + for (let i = 0; i < numOperands; i++) { + const {term, value} = i === specialPosition ? + this.generateSpecialTerm(isSquare) : this.generateRandomTerm(); + if (i === 0) { + expression = term; + correctAnswer = value; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${term}`; + correctAnswer = this.applyOperation(correctAnswer, value, op); + } + } + + correctAnswer = this.calculateWithPriority(expression); + if (numOperands >= 3 && Math.random() < 0.4) { + const result = this.addParentheses(expression, correctAnswer); + if (result) {expression = result.expression; correctAnswer = result.answer;} + } + + const options = this.generateOptions(correctAnswer, 4); + return { + id: `middle-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, + stem: `计算：${expression} = ?`, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + // 生成特殊项（平方或开方） + generateSpecialTerm(isSquare) { + if (isSquare) { + const base = Math.floor(Math.random() * 15) + 1; + return { term: `${base}²`, value: base * base }; + } else { + const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; + const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; + return { term: `√${num}`, value: Math.sqrt(num) }; + } + } + + // 生成随机项（数字、平方或开方） + generateRandomTerm() { + const termType = Math.random(); + if (termType < 0.3) { + const base = Math.floor(Math.random() * 15) + 1; + return { term: `${base}²`, value: base * base }; + } else if (termType < 0.6) { + const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; + const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; + return { term: `√${num}`, value: Math.sqrt(num) }; + } else { + const num = Math.floor(Math.random() * 100) + 1; + return { term: num.toString(), value: num }; + } + } + + // 生成高中题目（1-5个操作数，包含三角函数） + generateHighSchoolQuestion() { + const numOperands = Math.floor(Math.random() * 5) + 1; + const operations = ['+', '-', '×', '÷']; + const specialPosition = Math.floor(Math.random() * numOperands); + let expression = '', correctAnswer = 0; + + for (let i = 0; i < numOperands; i++) { + const {term, value} = i === specialPosition ? + this.generateTrigTerm() : (Math.random() < 0.4 ? this.generateTrigTerm() : this.generateNumberTerm()); + + if (i === 0) { expression = term; correctAnswer = value; } + else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${term}`; + correctAnswer = this.applyOperation(correctAnswer, value, op); + } + } + + correctAnswer = this.calculateWithPriority(expression); + if (numOperands >= 3 && Math.random() < 0.4) { + const result = this.addParentheses(expression, correctAnswer); + if (result) { expression = result.expression; correctAnswer = result.answer; } + } + + const options = this.generateOptions(correctAnswer, 4); + return { + id: `high-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, + stem: `计算：${expression} = ?`, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + // 生成三角函数项 + generateTrigTerm() { + const functions = ['sin', 'cos', 'tan']; + const func = functions[Math.floor(Math.random() * functions.length)]; + const angle = Math.floor(Math.random() * 100) + 1; + const value = Math.round(Math[func](angle * Math.PI / 180) * 100) / 100; + return { term: `${func}${angle}`, value }; + } + + // 生成数字项 + generateNumberTerm() { + const num = Math.floor(Math.random() * 100) + 1; + return { term: num.toString(), value: num }; + } + + // 生成选择题选项 + generateOptions(correctAnswer, count) { + const options = []; + const keys = ['A', 'B', 'C', 'D']; + const correctIndex = Math.floor(Math.random() * count); + const isInteger = typeof correctAnswer === 'number' && Number.isInteger(correctAnswer); + + for (let i = 0; i < count; i++) { + const value = i === correctIndex ? correctAnswer : this.generateWrongOption(correctAnswer, isInteger, i); + options.push({key: keys[i], text: value.toString(), isCorrect: i === correctIndex}); + } + return options; + } + + // 生成错误选项 + generateWrongOption(correctAnswer, isInteger, index) { + if (typeof correctAnswer !== 'number') { + return Math.random().toString(36).substring(2, 6); + } + + let attempts = 0; + let value; + do { + const deviation = (Math.random() - 0.5) * 4; + value = isInteger ? + correctAnswer + Math.floor(Math.random() * 10) - 5 : + Math.round((correctAnswer + deviation) * 100) / 100; + + if (++attempts > 10) { + value = correctAnswer + (index + 1); + if (isInteger) { + value = Math.round(value); + } + break; + } + } while (value === correctAnswer); + return value; + } + + // 获取数字的所有因数 + getDivisors(n) { + const divisors = []; + for (let i = 2; i <= Math.min(n, 100); i++) { // 除数也限制在1-100范围内 + if (n % i === 0) divisors.push(i); + } + return divisors; + } + + // 小学题目专用的括号添加函数，确保括号内不会产生负数 + addParenthesesForPrimary(expression, originalAnswer) { + const parts = expression.split(' '); + + // 如果表达式太短，不需要加括号 + if (parts.length < 5) return null; + + // 找到所有可以加括号的位置（运算符位置） + const operatorPositions = []; + for (let i = 1; i < parts.length - 1; i += 2) { + // 只考虑加法和乘法，避免减法导致负数 + if (parts[i] === '+' || parts[i] === '×') { + operatorPositions.push(i); + } + } + + if (operatorPositions.length === 0) return null; + + // 随机选择一个运算符位置 + const operatorIndex = operatorPositions[Math.floor(Math.random() * operatorPositions.length)]; + + // 确定括号的范围（从运算符前一个操作数到运算符后一个操作数） + const startPos = operatorIndex - 1; + const endPos = operatorIndex + 1; + + // 构建带括号的表达式 + let result = ''; + for (let i = 0; i < parts.length; i++) { + if (i === startPos) { + result += '('; + } + + result += parts[i]; + + if (i === endPos) { + result += ')'; + } + + if (i < parts.length - 1) { + result += ' '; + } + } + + // 计算带括号的答案 + let newAnswer = this.calculateWithPriority(result); + + // 确保答案是非负整数 + if (newAnswer < 0 || !Number.isInteger(newAnswer)) { + return null; + } + + return { + answer: newAnswer, + expression: result, + }; + } + + // 通用的括号添加函数 + // 为表达式添加括号 + addParentheses(expression, originalAnswer) { + const parts = expression.split(' '); + + // 如果表达式太短，不需要加括号 + if (parts.length < 5) return null; + + // 找到所有可以加括号的位置（运算符位置） + const operatorPositions = []; + for (let i = 1; i < parts.length - 1; i += 2) { + operatorPositions.push(i); + } + + if (operatorPositions.length === 0) return null; + + // 随机选择一个运算符位置 + const operatorIndex = operatorPositions[Math.floor(Math.random() * operatorPositions.length)]; + + // 确定括号的范围（从运算符前一个操作数到运算符后一个操作数） + const startPos = operatorIndex - 1; + const endPos = operatorIndex + 1; + + // 构建带括号的表达式 + let result = ''; + for (let i = 0; i < parts.length; i++) { + if (i === startPos) { + result += '('; + } + + result += parts[i]; + + if (i === endPos) { + result += ')'; + } + + if (i < parts.length - 1) { + result += ' '; + } + } + + // 计算带括号的答案 + let newAnswer = this.calculateWithPriority(result); + + return { + answer: newAnswer, + expression: result, + }; + } + + // 执行四则运算操作 + applyOperation(current, value, op) { + switch (op) { + case '+': return current + value; + case '-': return current - value; + case '×': return current * value; + case '÷': return value !== 0 ? current / value : current; + default: return current; + } + } + + // 使用正确优先级计算表达式的答案 + calculateWithPriority(expression) { + // 替换运算符为JavaScript可识别的 + let jsExpression = expression + .replace(/×/g, '*') + .replace(/÷/g, '/') + .replace(/²/g, '**2') + .replace(/√(\d+)/g, 'Math.sqrt($1)') + .replace(/sin(\d+)/g, 'Math.sin($1 * Math.PI / 180)') + .replace(/cos(\d+)/g, 'Math.cos($1 * Math.PI / 180)') + .replace(/tan(\d+)/g, 'Math.tan($1 * Math.PI / 180)'); + + try { + // 使用eval计算表达式 + let result = eval(jsExpression); + + // 处理特殊情况 + if (typeof result === 'number') { + // 如果是整数，返回整数 + if (Number.isInteger(result)) { + return result; + } + // 否则保留两位小数 + return Math.round(result * 100) / 100; + } + + return result; + } catch (error) { + console.error('计算表达式时出错:', expression, error); + // 如果计算失败，返回原始表达式的估算值 + return this.estimateExpression(expression); + } + } + + // 估算表达式的值（当eval失败时使用） + estimateExpression(expression) { + // 简单的估算逻辑，按顺序计算 + const parts = expression.split(' '); + let result = parseFloat(parts[0]); + + for (let i = 1; i < parts.length; i += 2) { + const operator = parts[i]; + const num = parseFloat(parts[i + 1]); + + switch (operator) { + case '+': + result += num; + break; + case '-': + result -= num; + break; + case '×': + result *= num; + break; + case '÷': + if (num !== 0) result /= num; + break; + } + } + + return Math.round(result * 100) / 100; + } +} + +module.exports = MathQuestionGenerator; \ No newline at end of file diff --git a/src/backend/utils/user-manager.js b/src/backend/utils/user-manager.js new file mode 100644 index 0000000..3b4929f --- /dev/null +++ b/src/backend/utils/user-manager.js @@ -0,0 +1,183 @@ +const fs = require('fs'); +const path = require('path'); +const crypto = require('crypto'); + +const USERS_FILE = path.join(__dirname, '../data/users.json'); + +// 用户管理类，处理用户注册、登录等操作 +class UserManager { + constructor() { + this.ensureDataFile(); + } + + // 确保数据文件存在 + ensureDataFile() { + const dataDir = path.dirname(USERS_FILE); + if (!fs.existsSync(dataDir)) { + fs.mkdirSync(dataDir, {recursive: true}); + } + if (!fs.existsSync(USERS_FILE)) { + fs.writeFileSync(USERS_FILE, JSON.stringify([])); + } + } + + // 读取所有用户数据 + readUsers() { + try { + return JSON.parse(fs.readFileSync(USERS_FILE, 'utf8')); + } catch (error) { + console.error('读取用户数据失败:', error); + return []; + } + } + + // 保存用户数据到文件 + writeUsers(users) { + try { + fs.writeFileSync(USERS_FILE, JSON.stringify(users, null, 2)); + return true; + } catch (error) { + console.error('写入用户数据失败:', error); + return false; + } + } + + // 对密码进行SHA256哈希加密 + hashPassword(password) { + return crypto.createHash('sha256').update(password).digest('hex'); + } + + // 验证密码格式（6-10位） + validatePassword(password) { + if (!password || password.length < 6 || password.length > 10) { + return false; + } + const hasUpper = /[A-Z]/.test(password); + const hasLower = /[a-z]/.test(password); + const hasDigit = /\d/.test(password); + return hasUpper && hasLower && hasDigit; + } + + findUserByEmail(email) { + const users = this.readUsers(); + return users.find((user) => user.email === email); + } + + findUserByUsername(username) { + const users = this.readUsers(); + return users.find((user) => user.username === username); + } + + createUser(email, username) { + const users = this.readUsers(); + + // 严格检查邮箱是否已存在 + if (users.some((user) => user.email === email)) { + throw new Error('邮箱已被注册，每个邮箱只能注册一个账户'); + } + + // 检查用户名是否已存在 + if (users.some((user) => user.username === username)) { + throw new Error('用户名已存在'); + } + + const newUser = { + email, + registeredAt: new Date().toISOString(), + username, + }; + + users.push(newUser); + if (this.writeUsers(users)) { + console.log(`✅ 新用户注册: ${username} (${email})`); + return newUser; + } else { + throw new Error('用户创建失败'); + } + } + + setPassword(email, password) { + const users = this.readUsers(); + const userIndex = users.findIndex((user) => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + if (!this.validatePassword(password)) { + throw new Error('密码需6-10位且包含大小写字母和数字'); + } + + users[userIndex].password = this.hashPassword(password); + users[userIndex].updatedAt = new Date().toISOString(); + + if (this.writeUsers(users)) { + console.log(`✅ 用户设置密码: ${email}`); + return true; + } else { + throw new Error('密码设置失败'); + } + } + + verifyPassword(email, password) { + const user = this.findUserByEmail(email); + if (!user || !user.password) { + return false; + } + return user.password === this.hashPassword(password); + } + + changePassword(email, oldPassword, newPassword) { + if (!this.verifyPassword(email, oldPassword)) { + throw new Error('原密码不正确'); + } + + return this.setPassword(email, newPassword); + } + + changeUsername(email, newUsername) { + const users = this.readUsers(); + const userIndex = users.findIndex((user) => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + // 检查新用户名是否已存在（排除当前用户） + if (users.some((user) => user.username === newUsername && user.email !== email)) { + throw new Error('用户名已存在'); + } + + const oldUsername = users[userIndex].username; + users[userIndex].username = newUsername; + users[userIndex].updatedAt = new Date().toISOString(); + + if (this.writeUsers(users)) { + console.log(`✅ 用户修改用户名: ${oldUsername} -> ${newUsername}`); + return true; + } else { + throw new Error('用户名修改失败'); + } + } + + deleteUser(email) { + const users = this.readUsers(); + const userIndex = users.findIndex((user) => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + const deletedUser = users[userIndex]; + users.splice(userIndex, 1); + + if (this.writeUsers(users)) { + console.log(`✅ 用户账号已删除: ${deletedUser.username} (${email})`); + return true; + } else { + throw new Error('账号删除失败'); + } + } +} + +module.exports = UserManager; \ No newline at end of file -- 2.34.1 From efbe36a3691ea99df3c23734c4502b4e303f45bc Mon Sep 17 00:00:00 2001 From: wwb <3454934335@qq.com> Date: Sun, 12 Oct 2025 14:55:25 +0800 Subject: [PATCH 12/13] =?UTF-8?q?=E5=88=A0=E9=99=A4=E6=89=80=E6=9C=89?= =?UTF-8?q?=E7=8E=B0=E6=9C=89=E6=96=87=E4=BB=B6?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/backend/data/users.json | 16 - src/backend/email-config.js | 31 - src/backend/package-lock.json | 1243 ---------------------- src/backend/package.json | 35 - src/backend/server.js | 310 ------ src/backend/utils/multi-email-service.js | 104 -- src/backend/utils/question-generator.js | 441 -------- src/backend/utils/user-manager.js | 183 ---- 8 files changed, 2363 deletions(-) delete mode 100644 src/backend/data/users.json delete mode 100644 src/backend/email-config.js delete mode 100644 src/backend/package-lock.json delete mode 100644 src/backend/package.json delete mode 100644 src/backend/server.js delete mode 100644 src/backend/utils/multi-email-service.js delete mode 100644 src/backend/utils/question-generator.js delete mode 100644 src/backend/utils/user-manager.js diff --git a/src/backend/data/users.json b/src/backend/data/users.json deleted file mode 100644 index ea595de..0000000 --- a/src/backend/data/users.json +++ /dev/null @@ -1,16 +0,0 @@ -[ - { - "email": "3454934335@qq.com", - "username": "wwb", - "registeredAt": "2025-10-11T05:26:22.038Z", - "password": "cc43f52af644042612d98dea06cf5b64d8e2f8af1de8065fe83b208f4a6d8875", - "updatedAt": "2025-10-11T05:26:22.051Z" - }, - { - "email": "3063485007@qq.com", - "username": "wqs", - "registeredAt": "2025-10-11T19:08:09.303Z", - "password": "be0c664d19564b568c4dd76d00a26a08ee89214877e52225eee5ffefab36c15f", - "updatedAt": "2025-10-11T19:08:26.339Z" - } -] \ No newline at end of file diff --git a/src/backend/email-config.js b/src/backend/email-config.js deleted file mode 100644 index 5a4c8e7..0000000 --- a/src/backend/email-config.js +++ /dev/null @@ -1,31 +0,0 @@ -// ============================================= -// 数学学习软件 - 邮箱配置文件 -// ============================================= - - -// ==================== 选择1: QQ邮箱服务 ==================== -module.exports = { - service: 'qq', - auth: { - user: '3454934335@qq.com', // 替换为你的QQ邮箱 - pass: 'vxhsswmmqiyvchhh' // 替换为QQ邮箱授权码（16位） - } -}; - -// ==================== 选择2: 163邮箱服务 ==================== -module.exports = { - service: '163', - auth: { - user: '18950579895@163.com',// 替换为你的163邮箱 - pass: 'UCgJrE7yzzd4Uz3g' // 替换为163邮箱授权码 - } -}; - - -// ==================== 选择3: 测试模式 ==================== -// 不发送实际邮件，验证码在控制台显示 -// 适用于开发和测试环境 -/* -module.exports = {}; -*/ - diff --git 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+++ /dev/null @@ -1,35 +0,0 @@ -{ - "name": "math-learning-backend", - "version": "1.0.0", - "description": "数学学习软件后端API - 支持QQ邮箱和163邮箱验证", - "main": "server.js", - "scripts": { - "start": "node server.js", - "dev": "nodemon server.js", - "test": "echo \"后端服务测试模式\" && node server.js" - }, - "dependencies": { - "express": "^4.18.2", - "cors": "^2.8.5", - "body-parser": "^1.20.2", - "nodemailer": "^6.9.7" - }, - "devDependencies": { - "nodemon": "^3.0.1" - }, - "keywords": [ - "education", - "math", - "learning", - "email", - "qq", - "163" - ], - "author": "数学学习软件团队", - "license": "MIT", - "repository": { - "type": "git", - "url": "https://github.com/your-repo/math-learning-software" - } -} - diff --git a/src/backend/server.js b/src/backend/server.js deleted file mode 100644 index 5896e8b..0000000 --- a/src/backend/server.js +++ /dev/null @@ -1,310 +0,0 @@ -const express = require('express'); -const cors = require('cors'); -const bodyParser = require('body-parser'); -const fs = require('fs'); -const path = require('path'); -const crypto = require('crypto'); - -// 导入工具类 -const UserManager = require('./utils/user-manager'); -const MultiEmailService = require('./utils/multi-email-service'); -const MathQuestionGenerator = require('./utils/question-generator'); - -// 创建Express应用实例 -const app = express(); -const PORT = 8080; - -// 配置中间件 -app.use(cors()); -app.use(bodyParser.json()); -app.use(express.static(path.join(__dirname, '../project4'))); - -// 实例化管理器 -const userManager = new UserManager(); -const emailService = new MultiEmailService(); - -// 存储验证码（内存存储，重启后失效） -const verificationCodes = new Map(); - -// 生成6位数字验证码 -function generateVerificationCode() { - return Math.floor(100000 + Math.random() * 900000).toString(); -} - -// 验证邮箱格式是否正确 -function validateEmail(email) { - return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email); -} - -// API路由 - -// 检查服务器健康状态 -app.get('/api/health', (req, res) => { - res.json({ - ok: true, - message: '服务正常运行', - emailService: emailService.transporter ? '已配置' : '测试模式' - }); -}); - -// 发送邮箱验证码 -app.post('/api/send-code', async (req, res) => { - try { - const {email, username} = req.body; - - console.log('收到发送验证码请求:', {email, username}); - - if (!email || !username) { - return res.json({ok: false, message: '邮箱和用户名不能为空'}); - } - - // 验证邮箱格式 - if (!validateEmail(email)) { - return res.json({ok: false, message: '邮箱格式不正确'}); - } - - // 限制邮箱域名，只允许QQ邮箱和163邮箱 - if (!email.includes('@qq.com') && !email.includes('@163.com')) { - return res.json({ok: false, message: '只支持QQ邮箱和163邮箱'}); - } - - // 检查用户名是否已存在 - if (userManager.findUserByUsername(username)) { - return res.json({ok: false, message: '用户名已存在'}); - } - - // 检查邮箱是否已注册 - if (userManager.findUserByEmail(email)) { - return res.json({ok: false, message: '邮箱已被注册'}); - } - - const code = generateVerificationCode(); - verificationCodes.set(email, { - code, - username, - timestamp: Date.now(), - }); - - console.log(`为邮箱 ${email} 生成验证码: ${code}`); - - // 发送邮件 - const emailResult = await emailService.sendVerificationCode(email, code, username); - - if (emailResult.success) { - res.json({ok: true, message: emailResult.message}); - } else { - // 如果邮件发送失败，但在开发模式下提供了验证码，仍然算成功 - if (emailResult.debug) { - res.json({ok: true, message: emailResult.message + ' ' + emailResult.debug}); - } else { - res.json({ok: false, message: emailResult.message}); - } - } - } catch (error) { - console.error('发送验证码错误:', error); - res.json({ok: false, message: '服务器内部错误'}); - } -}); - -// 验证码验证 -app.post('/api/verify-code', (req, res) => { - try { - const {email, username, code} = req.body; - - console.log('收到验证码验证请求:', {email, username, code}); - - if (!email || !username || !code) { - return res.json({ok: false, message: '请填写完整信息'}); - } - - const storedData = verificationCodes.get(email); - - if (!storedData) { - return res.json({ok: false, message: '请先获取验证码'}); - } - - // 验证码10分钟过期 - if (Date.now() - storedData.timestamp > 10 * 60 * 1000) { - verificationCodes.delete(email); - return res.json({ok: false, message: '验证码已过期，请重新获取'}); - } - - if (storedData.code !== code) { - return res.json({ok: false, message: '验证码不正确'}); - } - - if (storedData.username !== username) { - return res.json({ok: false, message: '用户名与验证时不一致'}); - } - - // 清除验证码 - verificationCodes.delete(email); - - res.json({ok: true, message: '验证成功，请设置密码'}); - } catch (error) { - console.error('验证码验证错误:', error); - res.json({ok: false, message: error.message}); - } -}); - -// 注册（创建用户 + 设置密码） -app.post('/api/register', (req, res) => { - try { - const {email, username, password} = req.body; - - console.log('收到注册请求:', {email, username}); - - if (!email || !username || !password) { - return res.json({ok: false, message: '请填写完整信息'}); - } - - // 创建用户并设置密码 - userManager.createUser(email, username); - userManager.setPassword(email, password); - - res.json({ok: true, message: '注册成功'}); - } catch (error) { - console.error('注册错误:', error); - res.json({ok: false, message: error.message}); - } -}); - - -// 登录 -app.post('/api/login', (req, res) => { - try { - const {account, password} = req.body; - - if (!account || !password) { - return res.json({ok: false, message: '请填写账号和密码'}); - } - - // 通过邮箱或用户名查找用户 - let user = userManager.findUserByEmail(account); - if (!user) { - user = userManager.findUserByUsername(account); - } - - if (!user || !user.password) { - return res.json({ok: false, message: '用户不存在'}); - } - - if (!userManager.verifyPassword(user.email, password)) { - return res.json({ok: false, message: '密码不正确'}); - } - - res.json({ - ok: true, - message: '登录成功', - data: { - email: user.email, - username: user.username, - }, - }); - } catch (error) { - console.error('登录错误:', error); - res.json({ok: false, message: error.message}); - } -}); - -// 修改密码 -app.post('/api/change-password', (req, res) => { - try { - const {email, oldPassword, newPassword} = req.body; - - if (!email || !oldPassword || !newPassword) { - return res.json({ok: false, message: '请填写完整信息'}); - } - - userManager.changePassword(email, oldPassword, newPassword); - res.json({ok: true, message: '密码修改成功'}); - } catch (error) { - console.error('修改密码错误:', error); - res.json({ok: false, message: error.message}); - } -}); - -// 修改用户名 -app.post('/api/change-username', (req, res) => { - try { - const {email, username} = req.body; - - if (!email || !username) { - return res.json({ok: false, message: '请填写完整信息'}); - } - - userManager.changeUsername(email, username); - res.json({ok: true, message: '用户名修改成功'}); - } catch (error) { - console.error('修改用户名错误:', error); - res.json({ok: false, message: error.message}); - } -}); - -// 删除账号 -app.post('/api/delete-account', (req, res) => { - try { - const {email, password} = req.body; - - if (!email || !password) { - return res.json({ok: false, message: '请填写完整信息'}); - } - - // 验证密码 - if (!userManager.verifyPassword(email, password)) { - return res.json({ok: false, message: '密码不正确'}); - } - - userManager.deleteUser(email); - res.json({ok: true, message: '账号删除成功'}); - } catch (error) { - console.error('删除账号错误:', error); - res.json({ok: false, message: error.message}); - } -}); - -// 获取题目 -app.get('/api/questions', (req, res) => { - try { - const {grade, count} = req.query; - - if (!grade || !count) { - return res.json({ok: false, message: '请选择年级和题目数量'}); - } - - const countNum = parseInt(count); - if (isNaN(countNum) || countNum < 10 || countNum > 30) { - return res.json({ok: false, message: '题目数量需在10-30之间'}); - } - - const generator = new MathQuestionGenerator(); - const questions = generator.generateQuestions(grade, countNum); - res.json({ - ok: true, - data: questions, - message: '题目生成成功', - }); - } catch (error) { - console.error('生成题目失败:', error); - res.json({ok: false, message: '生成题目失败'}); - } -}); - -// 提供前端页面 -app.get('/', (req, res) => { - res.sendFile(path.join(__dirname, '../project4/index.html')); -}); - -// 启动服务器 -app.listen(PORT, () => { - console.log(`========================================`); - console.log(`🎓 数学学习软件后端服务已启动`); - console.log(`📍 服务地址: http://localhost:${PORT}`); - console.log(`🌐 前端页面: http://localhost:${PORT}/`); - console.log(`🔧 API文档: http://localhost:${PORT}/api/health`); - console.log(`📧 邮箱服务: ${emailService.transporter ? '已配置' : '测试模式'}`); - console.log(`========================================`); -}); - -module.exports = app; - diff --git a/src/backend/utils/multi-email-service.js b/src/backend/utils/multi-email-service.js deleted file mode 100644 index bba61fb..0000000 --- a/src/backend/utils/multi-email-service.js +++ /dev/null @@ -1,104 +0,0 @@ -const nodemailer = require('nodemailer'); - -// 多邮箱服务类，支持多种邮箱服务商 -class MultiEmailService { - constructor() { - this.transporters = new Map(); - this.initTransporters(); - } - - // 初始化各种邮箱服务商的传输器 - initTransporters() { - // QQ邮箱配置 - try { - // 修改 - const qqTransporter = nodemailer.createTransport({ - auth: { - pass: 'vxhsswmmqiyvchhh', - user: '3454934335@qq.com', - }, - service: 'qq', - }); - this.transporters.set('qq', qqTransporter); - console.log('✅ QQ邮箱服务已初始化'); - } catch (error) { - console.error('❌ QQ邮箱初始化失败:', error); - } - - // 163邮箱配置 - try { - // 修改 - const mail163Transporter = nodemailer.createTransport({ - auth: { - pass: 'UCgJrE7yzzd4Uz3g', - user: '18950579895@163.com', - }, - service: '163', - }); - this.transporters.set('163', mail163Transporter); - console.log('✅ 163邮箱服务已初始化'); - } catch (error) { - console.error('❌ 163邮箱初始化失败:', error); - } - } - - // 发送验证码邮件 - async sendVerificationCode(email, code, username) { - // 根据邮箱域名选择发件箱 - let transporter = email.includes('@qq.com') ? this.transporters.get('qq') : - email.includes('@163.com') ? this.transporters.get('163') : - this.transporters.get('qq'); - - if (!transporter) { - console.log(`🔧 测试模式 - 邮箱: ${email}, 验证码: ${code}`); - return {success: true, message: '验证码已生成（测试模式）', debug: `验证码: ${code}`}; - } - - const mailOptions = { - from: transporter.options.auth.user, - to: email, - subject: '数学学习软件 - 注册验证码', - html: this.generateEmailTemplate(code, username) - }; - - try { - await transporter.sendMail(mailOptions); - console.log(`✅ 验证码邮件已发送到: ${email}`); - return {success: true, message: '验证码已发送到您的邮箱'}; - } catch (error) { - console.error('❌ 邮件发送失败:', error); - return {success: false, message: '邮件发送失败，请稍后重试', debug: `验证码: ${code} (请使用此验证码完成注册)`}; - } - } - - // 生成邮件HTML模板 - generateEmailTemplate(code, username) { - return ` - - - - - - - -
-

🎓 数学学习软件

-

亲爱的 ${username}，您好！

-

您正在注册数学学习软件，验证码为：

-
${code}
-

验证码有效期为10分钟，请尽快完成注册。

-

如果这不是您本人的操作，请忽略此邮件。

-
- - - `; - } -} - -module.exports = MultiEmailService; - diff --git a/src/backend/utils/question-generator.js b/src/backend/utils/question-generator.js deleted file mode 100644 index 2457bc6..0000000 --- a/src/backend/utils/question-generator.js +++ /dev/null @@ -1,441 +0,0 @@ -const fs = require('fs'); -const path = require('path'); - -class MathQuestionGenerator { - constructor() { - this.currentSessionQuestions = new Set(); - } - - // 生成指定年级和数量的题目 - generateQuestions(grade, count) { - console.log(`正在生成${grade} ${count}道题目...`); - const questions = []; - this.currentSessionQuestions.clear(); - - const maxAttempts = count * 20; - let attempts = 0; - - while (questions.length < count && attempts < maxAttempts) { - attempts++; - const question = this.generateQuestion(grade); - if (!question) { - continue; - } - - const questionKey = `${grade}-${question.stem}`; - - if (!this.currentSessionQuestions.has(questionKey)) { - questions.push(question); - this.currentSessionQuestions.add(questionKey); - console.log(`✅ 生成第${questions.length}题: ${question.stem}`); - } - } - - if (questions.length < count) { - console.warn(`⚠️ 只生成了${questions.length}道题目，未能达到要求的${count}道`); - } - - return questions; - } - - // 根据年级生成单个题目 - generateQuestion(grade) { - try { - switch (grade) { - case '小学': - return this.generatePrimaryQuestion(); - case '初中': - return this.generateMiddleSchoolQuestion(); - case '高中': - return this.generateHighSchoolQuestion(); - default: - return this.generatePrimaryQuestion(); - } - } catch (error) { - console.error(`生成${grade}题目时出错:`, error); - return null; - } - } - - // 生成小学题目（2-5个操作数，基础四则运算） - generatePrimaryQuestion() { - const numOperands = Math.floor(Math.random() * 4) + 2; - const operations = ['+', '-', '×', '÷']; - let expression = ''; - let correctAnswer = 0; - - for (let i = 0; i < numOperands; i++) { - const num = Math.floor(Math.random() * 100) + 1; - if (i === 0) { - expression = num.toString(); - correctAnswer = num; - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} ${num}`; - correctAnswer = this.applyOperation(correctAnswer, num, op); - } - } - - correctAnswer = this.calculateWithPriority(expression); - if (numOperands >= 3 && Math.random() < 0.3) { - const result = this.addParentheses(expression, correctAnswer); - if (result) { - expression = result.expression; - correctAnswer = result.answer; - } - } - - const options = this.generateOptions(correctAnswer, 4); - return { - id: `primary-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, - stem: `计算：${expression} = ?`, - options: options, - answer: options.find(opt => opt.isCorrect).key - }; - } - - // 生成初中题目（1-5个操作数，包含平方和开方） - generateMiddleSchoolQuestion() { - const numOperands = Math.floor(Math.random() * 5) + 1; - const operations = ['+', '-', '×', '÷']; - const specialPosition = Math.floor(Math.random() * numOperands); - const isSquare = Math.random() < 0.5; - let expression = ''; - let correctAnswer = 0; - - for (let i = 0; i < numOperands; i++) { - const {term, value} = i === specialPosition ? - this.generateSpecialTerm(isSquare) : this.generateRandomTerm(); - if (i === 0) { - expression = term; - correctAnswer = value; - } else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} ${term}`; - correctAnswer = this.applyOperation(correctAnswer, value, op); - } - } - - correctAnswer = this.calculateWithPriority(expression); - if (numOperands >= 3 && Math.random() < 0.4) { - const result = this.addParentheses(expression, correctAnswer); - if (result) {expression = result.expression; correctAnswer = result.answer;} - } - - const options = this.generateOptions(correctAnswer, 4); - return { - id: `middle-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, - stem: `计算：${expression} = ?`, - options: options, - answer: options.find(opt => opt.isCorrect).key - }; - } - - // 生成特殊项（平方或开方） - generateSpecialTerm(isSquare) { - if (isSquare) { - const base = Math.floor(Math.random() * 15) + 1; - return { term: `${base}²`, value: base * base }; - } else { - const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; - const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; - return { term: `√${num}`, value: Math.sqrt(num) }; - } - } - - // 生成随机项（数字、平方或开方） - generateRandomTerm() { - const termType = Math.random(); - if (termType < 0.3) { - const base = Math.floor(Math.random() * 15) + 1; - return { term: `${base}²`, value: base * base }; - } else if (termType < 0.6) { - const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; - const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; - return { term: `√${num}`, value: Math.sqrt(num) }; - } else { - const num = Math.floor(Math.random() * 100) + 1; - return { term: num.toString(), value: num }; - } - } - - // 生成高中题目（1-5个操作数，包含三角函数） - generateHighSchoolQuestion() { - const numOperands = Math.floor(Math.random() * 5) + 1; - const operations = ['+', '-', '×', '÷']; - const specialPosition = Math.floor(Math.random() * numOperands); - let expression = '', correctAnswer = 0; - - for (let i = 0; i < numOperands; i++) { - const {term, value} = i === specialPosition ? - this.generateTrigTerm() : (Math.random() < 0.4 ? this.generateTrigTerm() : this.generateNumberTerm()); - - if (i === 0) { expression = term; correctAnswer = value; } - else { - const op = operations[Math.floor(Math.random() * operations.length)]; - expression += ` ${op} ${term}`; - correctAnswer = this.applyOperation(correctAnswer, value, op); - } - } - - correctAnswer = this.calculateWithPriority(expression); - if (numOperands >= 3 && Math.random() < 0.4) { - const result = this.addParentheses(expression, correctAnswer); - if (result) { expression = result.expression; correctAnswer = result.answer; } - } - - const options = this.generateOptions(correctAnswer, 4); - return { - id: `high-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, - stem: `计算：${expression} = ?`, - options: options, - answer: options.find(opt => opt.isCorrect).key - }; - } - - // 生成三角函数项 - generateTrigTerm() { - const functions = ['sin', 'cos', 'tan']; - const func = functions[Math.floor(Math.random() * functions.length)]; - const angle = Math.floor(Math.random() * 100) + 1; - const value = Math.round(Math[func](angle * Math.PI / 180) * 100) / 100; - return { term: `${func}${angle}`, value }; - } - - // 生成数字项 - generateNumberTerm() { - const num = Math.floor(Math.random() * 100) + 1; - return { term: num.toString(), value: num }; - } - - // 生成选择题选项 - generateOptions(correctAnswer, count) { - const options = []; - const keys = ['A', 'B', 'C', 'D']; - const correctIndex = Math.floor(Math.random() * count); - const isInteger = typeof correctAnswer === 'number' && Number.isInteger(correctAnswer); - - for (let i = 0; i < count; i++) { - const value = i === correctIndex ? correctAnswer : this.generateWrongOption(correctAnswer, isInteger, i); - options.push({key: keys[i], text: value.toString(), isCorrect: i === correctIndex}); - } - return options; - } - - // 生成错误选项 - generateWrongOption(correctAnswer, isInteger, index) { - if (typeof correctAnswer !== 'number') { - return Math.random().toString(36).substring(2, 6); - } - - let attempts = 0; - let value; - do { - const deviation = (Math.random() - 0.5) * 4; - value = isInteger ? - correctAnswer + Math.floor(Math.random() * 10) - 5 : - Math.round((correctAnswer + deviation) * 100) / 100; - - if (++attempts > 10) { - value = correctAnswer + (index + 1); - if (isInteger) { - value = Math.round(value); - } - break; - } - } while (value === correctAnswer); - return value; - } - - // 获取数字的所有因数 - getDivisors(n) { - const divisors = []; - for (let i = 2; i <= Math.min(n, 100); i++) { // 除数也限制在1-100范围内 - if (n % i === 0) divisors.push(i); - } - return divisors; - } - - // 小学题目专用的括号添加函数，确保括号内不会产生负数 - addParenthesesForPrimary(expression, originalAnswer) { - const parts = expression.split(' '); - - // 如果表达式太短，不需要加括号 - if (parts.length < 5) return null; - - // 找到所有可以加括号的位置（运算符位置） - const operatorPositions = []; - for (let i = 1; i < parts.length - 1; i += 2) { - // 只考虑加法和乘法，避免减法导致负数 - if (parts[i] === '+' || parts[i] === '×') { - operatorPositions.push(i); - } - } - - if (operatorPositions.length === 0) return null; - - // 随机选择一个运算符位置 - const operatorIndex = operatorPositions[Math.floor(Math.random() * operatorPositions.length)]; - - // 确定括号的范围（从运算符前一个操作数到运算符后一个操作数） - const startPos = operatorIndex - 1; - const endPos = operatorIndex + 1; - - // 构建带括号的表达式 - let result = ''; - for (let i = 0; i < parts.length; i++) { - if (i === startPos) { - result += '('; - } - - result += parts[i]; - - if (i === endPos) { - result += ')'; - } - - if (i < parts.length - 1) { - result += ' '; - } - } - - // 计算带括号的答案 - let newAnswer = this.calculateWithPriority(result); - - // 确保答案是非负整数 - if (newAnswer < 0 || !Number.isInteger(newAnswer)) { - return null; - } - - return { - answer: newAnswer, - expression: result, - }; - } - - // 通用的括号添加函数 - // 为表达式添加括号 - addParentheses(expression, originalAnswer) { - const parts = expression.split(' '); - - // 如果表达式太短，不需要加括号 - if (parts.length < 5) return null; - - // 找到所有可以加括号的位置（运算符位置） - const operatorPositions = []; - for (let i = 1; i < parts.length - 1; i += 2) { - operatorPositions.push(i); - } - - if (operatorPositions.length === 0) return null; - - // 随机选择一个运算符位置 - const operatorIndex = operatorPositions[Math.floor(Math.random() * operatorPositions.length)]; - - // 确定括号的范围（从运算符前一个操作数到运算符后一个操作数） - const startPos = operatorIndex - 1; - const endPos = operatorIndex + 1; - - // 构建带括号的表达式 - let result = ''; - for (let i = 0; i < parts.length; i++) { - if (i === startPos) { - result += '('; - } - - result += parts[i]; - - if (i === endPos) { - result += ')'; - } - - if (i < parts.length - 1) { - result += ' '; - } - } - - // 计算带括号的答案 - let newAnswer = this.calculateWithPriority(result); - - return { - answer: newAnswer, - expression: result, - }; - } - - // 执行四则运算操作 - applyOperation(current, value, op) { - switch (op) { - case '+': return current + value; - case '-': return current - value; - case '×': return current * value; - case '÷': return value !== 0 ? current / value : current; - default: return current; - } - } - - // 使用正确优先级计算表达式的答案 - calculateWithPriority(expression) { - // 替换运算符为JavaScript可识别的 - let jsExpression = expression - .replace(/×/g, '*') - .replace(/÷/g, '/') - .replace(/²/g, '**2') - .replace(/√(\d+)/g, 'Math.sqrt($1)') - .replace(/sin(\d+)/g, 'Math.sin($1 * Math.PI / 180)') - .replace(/cos(\d+)/g, 'Math.cos($1 * Math.PI / 180)') - .replace(/tan(\d+)/g, 'Math.tan($1 * Math.PI / 180)'); - - try { - // 使用eval计算表达式 - let result = eval(jsExpression); - - // 处理特殊情况 - if (typeof result === 'number') { - // 如果是整数，返回整数 - if (Number.isInteger(result)) { - return result; - } - // 否则保留两位小数 - return Math.round(result * 100) / 100; - } - - return result; - } catch (error) { - console.error('计算表达式时出错:', expression, error); - // 如果计算失败，返回原始表达式的估算值 - return this.estimateExpression(expression); - } - } - - // 估算表达式的值（当eval失败时使用） - estimateExpression(expression) { - // 简单的估算逻辑，按顺序计算 - const parts = expression.split(' '); - let result = parseFloat(parts[0]); - - for (let i = 1; i < parts.length; i += 2) { - const operator = parts[i]; - const num = parseFloat(parts[i + 1]); - - switch (operator) { - case '+': - result += num; - break; - case '-': - result -= num; - break; - case '×': - result *= num; - break; - case '÷': - if (num !== 0) result /= num; - break; - } - } - - return Math.round(result * 100) / 100; - } -} - -module.exports = MathQuestionGenerator; \ No newline at end of file diff --git a/src/backend/utils/user-manager.js b/src/backend/utils/user-manager.js deleted file mode 100644 index 3b4929f..0000000 --- a/src/backend/utils/user-manager.js +++ /dev/null @@ -1,183 +0,0 @@ -const fs = require('fs'); -const path = require('path'); -const crypto = require('crypto'); - -const USERS_FILE = path.join(__dirname, '../data/users.json'); - -// 用户管理类，处理用户注册、登录等操作 -class UserManager { - constructor() { - this.ensureDataFile(); - } - - // 确保数据文件存在 - ensureDataFile() { - const dataDir = path.dirname(USERS_FILE); - if (!fs.existsSync(dataDir)) { - fs.mkdirSync(dataDir, {recursive: true}); - } - if (!fs.existsSync(USERS_FILE)) { - fs.writeFileSync(USERS_FILE, JSON.stringify([])); - } - } - - // 读取所有用户数据 - readUsers() { - try { - return JSON.parse(fs.readFileSync(USERS_FILE, 'utf8')); - } catch (error) { - console.error('读取用户数据失败:', error); - return []; - } - } - - // 保存用户数据到文件 - writeUsers(users) { - try { - fs.writeFileSync(USERS_FILE, JSON.stringify(users, null, 2)); - return true; - } catch (error) { - console.error('写入用户数据失败:', error); - return false; - } - } - - // 对密码进行SHA256哈希加密 - hashPassword(password) { - return crypto.createHash('sha256').update(password).digest('hex'); - } - - // 验证密码格式（6-10位） - validatePassword(password) { - if (!password || password.length < 6 || password.length > 10) { - return false; - } - const hasUpper = /[A-Z]/.test(password); - const hasLower = /[a-z]/.test(password); - const hasDigit = /\d/.test(password); - return hasUpper && hasLower && hasDigit; - } - - findUserByEmail(email) { - const users = this.readUsers(); - return users.find((user) => user.email === email); - } - - findUserByUsername(username) { - const users = this.readUsers(); - return users.find((user) => user.username === username); - } - - createUser(email, username) { - const users = this.readUsers(); - - // 严格检查邮箱是否已存在 - if (users.some((user) => user.email === email)) { - throw new Error('邮箱已被注册，每个邮箱只能注册一个账户'); - } - - // 检查用户名是否已存在 - if (users.some((user) => user.username === username)) { - throw new Error('用户名已存在'); - } - - const newUser = { - email, - registeredAt: new Date().toISOString(), - username, - }; - - users.push(newUser); - if (this.writeUsers(users)) { - console.log(`✅ 新用户注册: ${username} (${email})`); - return newUser; - } else { - throw new Error('用户创建失败'); - } - } - - setPassword(email, password) { - const users = this.readUsers(); - const userIndex = users.findIndex((user) => user.email === email); - - if (userIndex === -1) { - throw new Error('用户不存在'); - } - - if (!this.validatePassword(password)) { - throw new Error('密码需6-10位且包含大小写字母和数字'); - } - - users[userIndex].password = this.hashPassword(password); - users[userIndex].updatedAt = new Date().toISOString(); - - if (this.writeUsers(users)) { - console.log(`✅ 用户设置密码: ${email}`); - return true; - } else { - throw new Error('密码设置失败'); - } - } - - verifyPassword(email, password) { - const user = this.findUserByEmail(email); - if (!user || !user.password) { - return false; - } - return user.password === this.hashPassword(password); - } - - changePassword(email, oldPassword, newPassword) { - if (!this.verifyPassword(email, oldPassword)) { - throw new Error('原密码不正确'); - } - - return this.setPassword(email, newPassword); - } - - changeUsername(email, newUsername) { - const users = this.readUsers(); - const userIndex = users.findIndex((user) => user.email === email); - - if (userIndex === -1) { - throw new Error('用户不存在'); - } - - // 检查新用户名是否已存在（排除当前用户） - if (users.some((user) => user.username === newUsername && user.email !== email)) { - throw new Error('用户名已存在'); - } - - const oldUsername = users[userIndex].username; - users[userIndex].username = newUsername; - users[userIndex].updatedAt = new Date().toISOString(); - - if (this.writeUsers(users)) { - console.log(`✅ 用户修改用户名: ${oldUsername} -> ${newUsername}`); - return true; - } else { - throw new Error('用户名修改失败'); - } - } - - deleteUser(email) { - const users = this.readUsers(); - const userIndex = users.findIndex((user) => user.email === email); - - if (userIndex === -1) { - throw new Error('用户不存在'); - } - - const deletedUser = users[userIndex]; - users.splice(userIndex, 1); - - if (this.writeUsers(users)) { - console.log(`✅ 用户账号已删除: ${deletedUser.username} (${email})`); - return true; - } else { - throw new Error('账号删除失败'); - } - } -} - -module.exports = UserManager; \ No newline at end of file -- 2.34.1 From ad35d6ce799bbfa897c28c405caf1aeedba17cb9 Mon Sep 17 00:00:00 2001 From: wwb <3454934335@qq.com> Date: Sun, 12 Oct 2025 14:56:14 +0800 Subject: [PATCH 13/13] =?UTF-8?q?=E5=90=8E=E7=AB=AF?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- src/backend/data/users.json | 16 + src/backend/email-config.js | 31 + src/backend/package-lock.json | 1243 ++++++++++++++++++++++ src/backend/package.json | 35 + src/backend/server.js | 310 ++++++ src/backend/utils/multi-email-service.js | 104 ++ src/backend/utils/question-generator.js | 441 ++++++++ src/backend/utils/user-manager.js | 183 ++++ 8 files changed, 2363 insertions(+) create mode 100644 src/backend/data/users.json create mode 100644 src/backend/email-config.js create mode 100644 src/backend/package-lock.json create mode 100644 src/backend/package.json create mode 100644 src/backend/server.js create mode 100644 src/backend/utils/multi-email-service.js create mode 100644 src/backend/utils/question-generator.js create mode 100644 src/backend/utils/user-manager.js diff --git a/src/backend/data/users.json b/src/backend/data/users.json new file mode 100644 index 0000000..ea595de --- /dev/null +++ b/src/backend/data/users.json @@ -0,0 +1,16 @@ +[ + { + "email": "3454934335@qq.com", + "username": "wwb", + "registeredAt": "2025-10-11T05:26:22.038Z", + "password": "cc43f52af644042612d98dea06cf5b64d8e2f8af1de8065fe83b208f4a6d8875", + "updatedAt": "2025-10-11T05:26:22.051Z" + }, + { + "email": "3063485007@qq.com", + "username": "wqs", + "registeredAt": "2025-10-11T19:08:09.303Z", + "password": "be0c664d19564b568c4dd76d00a26a08ee89214877e52225eee5ffefab36c15f", + "updatedAt": "2025-10-11T19:08:26.339Z" + } +] \ No newline at end of file diff --git a/src/backend/email-config.js b/src/backend/email-config.js new file mode 100644 index 0000000..5a4c8e7 --- /dev/null +++ b/src/backend/email-config.js @@ -0,0 +1,31 @@ +// ============================================= +// 数学学习软件 - 邮箱配置文件 +// ============================================= + + +// ==================== 选择1: QQ邮箱服务 ==================== +module.exports = { + service: 'qq', + auth: { + user: '3454934335@qq.com', // 替换为你的QQ邮箱 + pass: 'vxhsswmmqiyvchhh' // 替换为QQ邮箱授权码（16位） + } +}; + +// ==================== 选择2: 163邮箱服务 ==================== +module.exports = { + service: '163', + auth: { + user: '18950579895@163.com',// 替换为你的163邮箱 + pass: 'UCgJrE7yzzd4Uz3g' // 替换为163邮箱授权码 + } +}; + + +// ==================== 选择3: 测试模式 ==================== +// 不发送实际邮件，验证码在控制台显示 +// 适用于开发和测试环境 +/* +module.exports = {}; +*/ + diff --git a/src/backend/package-lock.json b/src/backend/package-lock.json new file mode 100644 index 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b/src/backend/package.json @@ -0,0 +1,35 @@ +{ + "name": "math-learning-backend", + "version": "1.0.0", + "description": "数学学习软件后端API - 支持QQ邮箱和163邮箱验证", + "main": "server.js", + "scripts": { + "start": "node server.js", + "dev": "nodemon server.js", + "test": "echo \"后端服务测试模式\" && node server.js" + }, + "dependencies": { + "express": "^4.18.2", + "cors": "^2.8.5", + "body-parser": "^1.20.2", + "nodemailer": "^6.9.7" + }, + "devDependencies": { + "nodemon": "^3.0.1" + }, + "keywords": [ + "education", + "math", + "learning", + "email", + "qq", + "163" + ], + "author": "数学学习软件团队", + "license": "MIT", + "repository": { + "type": "git", + "url": "https://github.com/your-repo/math-learning-software" + } +} + diff --git a/src/backend/server.js b/src/backend/server.js new file mode 100644 index 0000000..5896e8b --- /dev/null +++ b/src/backend/server.js @@ -0,0 +1,310 @@ +const express = require('express'); +const cors = require('cors'); +const bodyParser = require('body-parser'); +const fs = require('fs'); +const path = require('path'); +const crypto = require('crypto'); + +// 导入工具类 +const UserManager = require('./utils/user-manager'); +const MultiEmailService = require('./utils/multi-email-service'); +const MathQuestionGenerator = require('./utils/question-generator'); + +// 创建Express应用实例 +const app = express(); +const PORT = 8080; + +// 配置中间件 +app.use(cors()); +app.use(bodyParser.json()); +app.use(express.static(path.join(__dirname, '../project4'))); + +// 实例化管理器 +const userManager = new UserManager(); +const emailService = new MultiEmailService(); + +// 存储验证码（内存存储，重启后失效） +const verificationCodes = new Map(); + +// 生成6位数字验证码 +function generateVerificationCode() { + return Math.floor(100000 + Math.random() * 900000).toString(); +} + +// 验证邮箱格式是否正确 +function validateEmail(email) { + return /^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email); +} + +// API路由 + +// 检查服务器健康状态 +app.get('/api/health', (req, res) => { + res.json({ + ok: true, + message: '服务正常运行', + emailService: emailService.transporter ? '已配置' : '测试模式' + }); +}); + +// 发送邮箱验证码 +app.post('/api/send-code', async (req, res) => { + try { + const {email, username} = req.body; + + console.log('收到发送验证码请求:', {email, username}); + + if (!email || !username) { + return res.json({ok: false, message: '邮箱和用户名不能为空'}); + } + + // 验证邮箱格式 + if (!validateEmail(email)) { + return res.json({ok: false, message: '邮箱格式不正确'}); + } + + // 限制邮箱域名，只允许QQ邮箱和163邮箱 + if (!email.includes('@qq.com') && !email.includes('@163.com')) { + return res.json({ok: false, message: '只支持QQ邮箱和163邮箱'}); + } + + // 检查用户名是否已存在 + if (userManager.findUserByUsername(username)) { + return res.json({ok: false, message: '用户名已存在'}); + } + + // 检查邮箱是否已注册 + if (userManager.findUserByEmail(email)) { + return res.json({ok: false, message: '邮箱已被注册'}); + } + + const code = generateVerificationCode(); + verificationCodes.set(email, { + code, + username, + timestamp: Date.now(), + }); + + console.log(`为邮箱 ${email} 生成验证码: ${code}`); + + // 发送邮件 + const emailResult = await emailService.sendVerificationCode(email, code, username); + + if (emailResult.success) { + res.json({ok: true, message: emailResult.message}); + } else { + // 如果邮件发送失败，但在开发模式下提供了验证码，仍然算成功 + if (emailResult.debug) { + res.json({ok: true, message: emailResult.message + ' ' + emailResult.debug}); + } else { + res.json({ok: false, message: emailResult.message}); + } + } + } catch (error) { + console.error('发送验证码错误:', error); + res.json({ok: false, message: '服务器内部错误'}); + } +}); + +// 验证码验证 +app.post('/api/verify-code', (req, res) => { + try { + const {email, username, code} = req.body; + + console.log('收到验证码验证请求:', {email, username, code}); + + if (!email || !username || !code) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + const storedData = verificationCodes.get(email); + + if (!storedData) { + return res.json({ok: false, message: '请先获取验证码'}); + } + + // 验证码10分钟过期 + if (Date.now() - storedData.timestamp > 10 * 60 * 1000) { + verificationCodes.delete(email); + return res.json({ok: false, message: '验证码已过期，请重新获取'}); + } + + if (storedData.code !== code) { + return res.json({ok: false, message: '验证码不正确'}); + } + + if (storedData.username !== username) { + return res.json({ok: false, message: '用户名与验证时不一致'}); + } + + // 清除验证码 + verificationCodes.delete(email); + + res.json({ok: true, message: '验证成功，请设置密码'}); + } catch (error) { + console.error('验证码验证错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 注册（创建用户 + 设置密码） +app.post('/api/register', (req, res) => { + try { + const {email, username, password} = req.body; + + console.log('收到注册请求:', {email, username}); + + if (!email || !username || !password) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + // 创建用户并设置密码 + userManager.createUser(email, username); + userManager.setPassword(email, password); + + res.json({ok: true, message: '注册成功'}); + } catch (error) { + console.error('注册错误:', error); + res.json({ok: false, message: error.message}); + } +}); + + +// 登录 +app.post('/api/login', (req, res) => { + try { + const {account, password} = req.body; + + if (!account || !password) { + return res.json({ok: false, message: '请填写账号和密码'}); + } + + // 通过邮箱或用户名查找用户 + let user = userManager.findUserByEmail(account); + if (!user) { + user = userManager.findUserByUsername(account); + } + + if (!user || !user.password) { + return res.json({ok: false, message: '用户不存在'}); + } + + if (!userManager.verifyPassword(user.email, password)) { + return res.json({ok: false, message: '密码不正确'}); + } + + res.json({ + ok: true, + message: '登录成功', + data: { + email: user.email, + username: user.username, + }, + }); + } catch (error) { + console.error('登录错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 修改密码 +app.post('/api/change-password', (req, res) => { + try { + const {email, oldPassword, newPassword} = req.body; + + if (!email || !oldPassword || !newPassword) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + userManager.changePassword(email, oldPassword, newPassword); + res.json({ok: true, message: '密码修改成功'}); + } catch (error) { + console.error('修改密码错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 修改用户名 +app.post('/api/change-username', (req, res) => { + try { + const {email, username} = req.body; + + if (!email || !username) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + userManager.changeUsername(email, username); + res.json({ok: true, message: '用户名修改成功'}); + } catch (error) { + console.error('修改用户名错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 删除账号 +app.post('/api/delete-account', (req, res) => { + try { + const {email, password} = req.body; + + if (!email || !password) { + return res.json({ok: false, message: '请填写完整信息'}); + } + + // 验证密码 + if (!userManager.verifyPassword(email, password)) { + return res.json({ok: false, message: '密码不正确'}); + } + + userManager.deleteUser(email); + res.json({ok: true, message: '账号删除成功'}); + } catch (error) { + console.error('删除账号错误:', error); + res.json({ok: false, message: error.message}); + } +}); + +// 获取题目 +app.get('/api/questions', (req, res) => { + try { + const {grade, count} = req.query; + + if (!grade || !count) { + return res.json({ok: false, message: '请选择年级和题目数量'}); + } + + const countNum = parseInt(count); + if (isNaN(countNum) || countNum < 10 || countNum > 30) { + return res.json({ok: false, message: '题目数量需在10-30之间'}); + } + + const generator = new MathQuestionGenerator(); + const questions = generator.generateQuestions(grade, countNum); + res.json({ + ok: true, + data: questions, + message: '题目生成成功', + }); + } catch (error) { + console.error('生成题目失败:', error); + res.json({ok: false, message: '生成题目失败'}); + } +}); + +// 提供前端页面 +app.get('/', (req, res) => { + res.sendFile(path.join(__dirname, '../project4/index.html')); +}); + +// 启动服务器 +app.listen(PORT, () => { + console.log(`========================================`); + console.log(`🎓 数学学习软件后端服务已启动`); + console.log(`📍 服务地址: http://localhost:${PORT}`); + console.log(`🌐 前端页面: http://localhost:${PORT}/`); + console.log(`🔧 API文档: http://localhost:${PORT}/api/health`); + console.log(`📧 邮箱服务: ${emailService.transporter ? '已配置' : '测试模式'}`); + console.log(`========================================`); +}); + +module.exports = app; + diff --git a/src/backend/utils/multi-email-service.js b/src/backend/utils/multi-email-service.js new file mode 100644 index 0000000..bba61fb --- /dev/null +++ b/src/backend/utils/multi-email-service.js @@ -0,0 +1,104 @@ +const nodemailer = require('nodemailer'); + +// 多邮箱服务类，支持多种邮箱服务商 +class MultiEmailService { + constructor() { + this.transporters = new Map(); + this.initTransporters(); + } + + // 初始化各种邮箱服务商的传输器 + initTransporters() { + // QQ邮箱配置 + try { + // 修改 + const qqTransporter = nodemailer.createTransport({ + auth: { + pass: 'vxhsswmmqiyvchhh', + user: '3454934335@qq.com', + }, + service: 'qq', + }); + this.transporters.set('qq', qqTransporter); + console.log('✅ QQ邮箱服务已初始化'); + } catch (error) { + console.error('❌ QQ邮箱初始化失败:', error); + } + + // 163邮箱配置 + try { + // 修改 + const mail163Transporter = nodemailer.createTransport({ + auth: { + pass: 'UCgJrE7yzzd4Uz3g', + user: '18950579895@163.com', + }, + service: '163', + }); + this.transporters.set('163', mail163Transporter); + console.log('✅ 163邮箱服务已初始化'); + } catch (error) { + console.error('❌ 163邮箱初始化失败:', error); + } + } + + // 发送验证码邮件 + async sendVerificationCode(email, code, username) { + // 根据邮箱域名选择发件箱 + let transporter = email.includes('@qq.com') ? this.transporters.get('qq') : + email.includes('@163.com') ? this.transporters.get('163') : + this.transporters.get('qq'); + + if (!transporter) { + console.log(`🔧 测试模式 - 邮箱: ${email}, 验证码: ${code}`); + return {success: true, message: '验证码已生成（测试模式）', debug: `验证码: ${code}`}; + } + + const mailOptions = { + from: transporter.options.auth.user, + to: email, + subject: '数学学习软件 - 注册验证码', + html: this.generateEmailTemplate(code, username) + }; + + try { + await transporter.sendMail(mailOptions); + console.log(`✅ 验证码邮件已发送到: ${email}`); + return {success: true, message: '验证码已发送到您的邮箱'}; + } catch (error) { + console.error('❌ 邮件发送失败:', error); + return {success: false, message: '邮件发送失败，请稍后重试', debug: `验证码: ${code} (请使用此验证码完成注册)`}; + } + } + + // 生成邮件HTML模板 + generateEmailTemplate(code, username) { + return ` + + + + + + + +
+

🎓 数学学习软件

+

亲爱的 ${username}，您好！

+

您正在注册数学学习软件，验证码为：

+
${code}
+

验证码有效期为10分钟，请尽快完成注册。

+

如果这不是您本人的操作，请忽略此邮件。

+
+ + + `; + } +} + +module.exports = MultiEmailService; + diff --git a/src/backend/utils/question-generator.js b/src/backend/utils/question-generator.js new file mode 100644 index 0000000..2457bc6 --- /dev/null +++ b/src/backend/utils/question-generator.js @@ -0,0 +1,441 @@ +const fs = require('fs'); +const path = require('path'); + +class MathQuestionGenerator { + constructor() { + this.currentSessionQuestions = new Set(); + } + + // 生成指定年级和数量的题目 + generateQuestions(grade, count) { + console.log(`正在生成${grade} ${count}道题目...`); + const questions = []; + this.currentSessionQuestions.clear(); + + const maxAttempts = count * 20; + let attempts = 0; + + while (questions.length < count && attempts < maxAttempts) { + attempts++; + const question = this.generateQuestion(grade); + if (!question) { + continue; + } + + const questionKey = `${grade}-${question.stem}`; + + if (!this.currentSessionQuestions.has(questionKey)) { + questions.push(question); + this.currentSessionQuestions.add(questionKey); + console.log(`✅ 生成第${questions.length}题: ${question.stem}`); + } + } + + if (questions.length < count) { + console.warn(`⚠️ 只生成了${questions.length}道题目，未能达到要求的${count}道`); + } + + return questions; + } + + // 根据年级生成单个题目 + generateQuestion(grade) { + try { + switch (grade) { + case '小学': + return this.generatePrimaryQuestion(); + case '初中': + return this.generateMiddleSchoolQuestion(); + case '高中': + return this.generateHighSchoolQuestion(); + default: + return this.generatePrimaryQuestion(); + } + } catch (error) { + console.error(`生成${grade}题目时出错:`, error); + return null; + } + } + + // 生成小学题目（2-5个操作数，基础四则运算） + generatePrimaryQuestion() { + const numOperands = Math.floor(Math.random() * 4) + 2; + const operations = ['+', '-', '×', '÷']; + let expression = ''; + let correctAnswer = 0; + + for (let i = 0; i < numOperands; i++) { + const num = Math.floor(Math.random() * 100) + 1; + if (i === 0) { + expression = num.toString(); + correctAnswer = num; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${num}`; + correctAnswer = this.applyOperation(correctAnswer, num, op); + } + } + + correctAnswer = this.calculateWithPriority(expression); + if (numOperands >= 3 && Math.random() < 0.3) { + const result = this.addParentheses(expression, correctAnswer); + if (result) { + expression = result.expression; + correctAnswer = result.answer; + } + } + + const options = this.generateOptions(correctAnswer, 4); + return { + id: `primary-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, + stem: `计算：${expression} = ?`, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + // 生成初中题目（1-5个操作数，包含平方和开方） + generateMiddleSchoolQuestion() { + const numOperands = Math.floor(Math.random() * 5) + 1; + const operations = ['+', '-', '×', '÷']; + const specialPosition = Math.floor(Math.random() * numOperands); + const isSquare = Math.random() < 0.5; + let expression = ''; + let correctAnswer = 0; + + for (let i = 0; i < numOperands; i++) { + const {term, value} = i === specialPosition ? + this.generateSpecialTerm(isSquare) : this.generateRandomTerm(); + if (i === 0) { + expression = term; + correctAnswer = value; + } else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${term}`; + correctAnswer = this.applyOperation(correctAnswer, value, op); + } + } + + correctAnswer = this.calculateWithPriority(expression); + if (numOperands >= 3 && Math.random() < 0.4) { + const result = this.addParentheses(expression, correctAnswer); + if (result) {expression = result.expression; correctAnswer = result.answer;} + } + + const options = this.generateOptions(correctAnswer, 4); + return { + id: `middle-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, + stem: `计算：${expression} = ?`, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + // 生成特殊项（平方或开方） + generateSpecialTerm(isSquare) { + if (isSquare) { + const base = Math.floor(Math.random() * 15) + 1; + return { term: `${base}²`, value: base * base }; + } else { + const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; + const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; + return { term: `√${num}`, value: Math.sqrt(num) }; + } + } + + // 生成随机项（数字、平方或开方） + generateRandomTerm() { + const termType = Math.random(); + if (termType < 0.3) { + const base = Math.floor(Math.random() * 15) + 1; + return { term: `${base}²`, value: base * base }; + } else if (termType < 0.6) { + const perfectSquares = [4, 9, 16, 25, 36, 49, 64, 81, 100]; + const num = perfectSquares[Math.floor(Math.random() * perfectSquares.length)]; + return { term: `√${num}`, value: Math.sqrt(num) }; + } else { + const num = Math.floor(Math.random() * 100) + 1; + return { term: num.toString(), value: num }; + } + } + + // 生成高中题目（1-5个操作数，包含三角函数） + generateHighSchoolQuestion() { + const numOperands = Math.floor(Math.random() * 5) + 1; + const operations = ['+', '-', '×', '÷']; + const specialPosition = Math.floor(Math.random() * numOperands); + let expression = '', correctAnswer = 0; + + for (let i = 0; i < numOperands; i++) { + const {term, value} = i === specialPosition ? + this.generateTrigTerm() : (Math.random() < 0.4 ? this.generateTrigTerm() : this.generateNumberTerm()); + + if (i === 0) { expression = term; correctAnswer = value; } + else { + const op = operations[Math.floor(Math.random() * operations.length)]; + expression += ` ${op} ${term}`; + correctAnswer = this.applyOperation(correctAnswer, value, op); + } + } + + correctAnswer = this.calculateWithPriority(expression); + if (numOperands >= 3 && Math.random() < 0.4) { + const result = this.addParentheses(expression, correctAnswer); + if (result) { expression = result.expression; correctAnswer = result.answer; } + } + + const options = this.generateOptions(correctAnswer, 4); + return { + id: `high-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`, + stem: `计算：${expression} = ?`, + options: options, + answer: options.find(opt => opt.isCorrect).key + }; + } + + // 生成三角函数项 + generateTrigTerm() { + const functions = ['sin', 'cos', 'tan']; + const func = functions[Math.floor(Math.random() * functions.length)]; + const angle = Math.floor(Math.random() * 100) + 1; + const value = Math.round(Math[func](angle * Math.PI / 180) * 100) / 100; + return { term: `${func}${angle}`, value }; + } + + // 生成数字项 + generateNumberTerm() { + const num = Math.floor(Math.random() * 100) + 1; + return { term: num.toString(), value: num }; + } + + // 生成选择题选项 + generateOptions(correctAnswer, count) { + const options = []; + const keys = ['A', 'B', 'C', 'D']; + const correctIndex = Math.floor(Math.random() * count); + const isInteger = typeof correctAnswer === 'number' && Number.isInteger(correctAnswer); + + for (let i = 0; i < count; i++) { + const value = i === correctIndex ? correctAnswer : this.generateWrongOption(correctAnswer, isInteger, i); + options.push({key: keys[i], text: value.toString(), isCorrect: i === correctIndex}); + } + return options; + } + + // 生成错误选项 + generateWrongOption(correctAnswer, isInteger, index) { + if (typeof correctAnswer !== 'number') { + return Math.random().toString(36).substring(2, 6); + } + + let attempts = 0; + let value; + do { + const deviation = (Math.random() - 0.5) * 4; + value = isInteger ? + correctAnswer + Math.floor(Math.random() * 10) - 5 : + Math.round((correctAnswer + deviation) * 100) / 100; + + if (++attempts > 10) { + value = correctAnswer + (index + 1); + if (isInteger) { + value = Math.round(value); + } + break; + } + } while (value === correctAnswer); + return value; + } + + // 获取数字的所有因数 + getDivisors(n) { + const divisors = []; + for (let i = 2; i <= Math.min(n, 100); i++) { // 除数也限制在1-100范围内 + if (n % i === 0) divisors.push(i); + } + return divisors; + } + + // 小学题目专用的括号添加函数，确保括号内不会产生负数 + addParenthesesForPrimary(expression, originalAnswer) { + const parts = expression.split(' '); + + // 如果表达式太短，不需要加括号 + if (parts.length < 5) return null; + + // 找到所有可以加括号的位置（运算符位置） + const operatorPositions = []; + for (let i = 1; i < parts.length - 1; i += 2) { + // 只考虑加法和乘法，避免减法导致负数 + if (parts[i] === '+' || parts[i] === '×') { + operatorPositions.push(i); + } + } + + if (operatorPositions.length === 0) return null; + + // 随机选择一个运算符位置 + const operatorIndex = operatorPositions[Math.floor(Math.random() * operatorPositions.length)]; + + // 确定括号的范围（从运算符前一个操作数到运算符后一个操作数） + const startPos = operatorIndex - 1; + const endPos = operatorIndex + 1; + + // 构建带括号的表达式 + let result = ''; + for (let i = 0; i < parts.length; i++) { + if (i === startPos) { + result += '('; + } + + result += parts[i]; + + if (i === endPos) { + result += ')'; + } + + if (i < parts.length - 1) { + result += ' '; + } + } + + // 计算带括号的答案 + let newAnswer = this.calculateWithPriority(result); + + // 确保答案是非负整数 + if (newAnswer < 0 || !Number.isInteger(newAnswer)) { + return null; + } + + return { + answer: newAnswer, + expression: result, + }; + } + + // 通用的括号添加函数 + // 为表达式添加括号 + addParentheses(expression, originalAnswer) { + const parts = expression.split(' '); + + // 如果表达式太短，不需要加括号 + if (parts.length < 5) return null; + + // 找到所有可以加括号的位置（运算符位置） + const operatorPositions = []; + for (let i = 1; i < parts.length - 1; i += 2) { + operatorPositions.push(i); + } + + if (operatorPositions.length === 0) return null; + + // 随机选择一个运算符位置 + const operatorIndex = operatorPositions[Math.floor(Math.random() * operatorPositions.length)]; + + // 确定括号的范围（从运算符前一个操作数到运算符后一个操作数） + const startPos = operatorIndex - 1; + const endPos = operatorIndex + 1; + + // 构建带括号的表达式 + let result = ''; + for (let i = 0; i < parts.length; i++) { + if (i === startPos) { + result += '('; + } + + result += parts[i]; + + if (i === endPos) { + result += ')'; + } + + if (i < parts.length - 1) { + result += ' '; + } + } + + // 计算带括号的答案 + let newAnswer = this.calculateWithPriority(result); + + return { + answer: newAnswer, + expression: result, + }; + } + + // 执行四则运算操作 + applyOperation(current, value, op) { + switch (op) { + case '+': return current + value; + case '-': return current - value; + case '×': return current * value; + case '÷': return value !== 0 ? current / value : current; + default: return current; + } + } + + // 使用正确优先级计算表达式的答案 + calculateWithPriority(expression) { + // 替换运算符为JavaScript可识别的 + let jsExpression = expression + .replace(/×/g, '*') + .replace(/÷/g, '/') + .replace(/²/g, '**2') + .replace(/√(\d+)/g, 'Math.sqrt($1)') + .replace(/sin(\d+)/g, 'Math.sin($1 * Math.PI / 180)') + .replace(/cos(\d+)/g, 'Math.cos($1 * Math.PI / 180)') + .replace(/tan(\d+)/g, 'Math.tan($1 * Math.PI / 180)'); + + try { + // 使用eval计算表达式 + let result = eval(jsExpression); + + // 处理特殊情况 + if (typeof result === 'number') { + // 如果是整数，返回整数 + if (Number.isInteger(result)) { + return result; + } + // 否则保留两位小数 + return Math.round(result * 100) / 100; + } + + return result; + } catch (error) { + console.error('计算表达式时出错:', expression, error); + // 如果计算失败，返回原始表达式的估算值 + return this.estimateExpression(expression); + } + } + + // 估算表达式的值（当eval失败时使用） + estimateExpression(expression) { + // 简单的估算逻辑，按顺序计算 + const parts = expression.split(' '); + let result = parseFloat(parts[0]); + + for (let i = 1; i < parts.length; i += 2) { + const operator = parts[i]; + const num = parseFloat(parts[i + 1]); + + switch (operator) { + case '+': + result += num; + break; + case '-': + result -= num; + break; + case '×': + result *= num; + break; + case '÷': + if (num !== 0) result /= num; + break; + } + } + + return Math.round(result * 100) / 100; + } +} + +module.exports = MathQuestionGenerator; \ No newline at end of file diff --git a/src/backend/utils/user-manager.js b/src/backend/utils/user-manager.js new file mode 100644 index 0000000..3b4929f --- /dev/null +++ b/src/backend/utils/user-manager.js @@ -0,0 +1,183 @@ +const fs = require('fs'); +const path = require('path'); +const crypto = require('crypto'); + +const USERS_FILE = path.join(__dirname, '../data/users.json'); + +// 用户管理类，处理用户注册、登录等操作 +class UserManager { + constructor() { + this.ensureDataFile(); + } + + // 确保数据文件存在 + ensureDataFile() { + const dataDir = path.dirname(USERS_FILE); + if (!fs.existsSync(dataDir)) { + fs.mkdirSync(dataDir, {recursive: true}); + } + if (!fs.existsSync(USERS_FILE)) { + fs.writeFileSync(USERS_FILE, JSON.stringify([])); + } + } + + // 读取所有用户数据 + readUsers() { + try { + return JSON.parse(fs.readFileSync(USERS_FILE, 'utf8')); + } catch (error) { + console.error('读取用户数据失败:', error); + return []; + } + } + + // 保存用户数据到文件 + writeUsers(users) { + try { + fs.writeFileSync(USERS_FILE, JSON.stringify(users, null, 2)); + return true; + } catch (error) { + console.error('写入用户数据失败:', error); + return false; + } + } + + // 对密码进行SHA256哈希加密 + hashPassword(password) { + return crypto.createHash('sha256').update(password).digest('hex'); + } + + // 验证密码格式（6-10位） + validatePassword(password) { + if (!password || password.length < 6 || password.length > 10) { + return false; + } + const hasUpper = /[A-Z]/.test(password); + const hasLower = /[a-z]/.test(password); + const hasDigit = /\d/.test(password); + return hasUpper && hasLower && hasDigit; + } + + findUserByEmail(email) { + const users = this.readUsers(); + return users.find((user) => user.email === email); + } + + findUserByUsername(username) { + const users = this.readUsers(); + return users.find((user) => user.username === username); + } + + createUser(email, username) { + const users = this.readUsers(); + + // 严格检查邮箱是否已存在 + if (users.some((user) => user.email === email)) { + throw new Error('邮箱已被注册，每个邮箱只能注册一个账户'); + } + + // 检查用户名是否已存在 + if (users.some((user) => user.username === username)) { + throw new Error('用户名已存在'); + } + + const newUser = { + email, + registeredAt: new Date().toISOString(), + username, + }; + + users.push(newUser); + if (this.writeUsers(users)) { + console.log(`✅ 新用户注册: ${username} (${email})`); + return newUser; + } else { + throw new Error('用户创建失败'); + } + } + + setPassword(email, password) { + const users = this.readUsers(); + const userIndex = users.findIndex((user) => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + if (!this.validatePassword(password)) { + throw new Error('密码需6-10位且包含大小写字母和数字'); + } + + users[userIndex].password = this.hashPassword(password); + users[userIndex].updatedAt = new Date().toISOString(); + + if (this.writeUsers(users)) { + console.log(`✅ 用户设置密码: ${email}`); + return true; + } else { + throw new Error('密码设置失败'); + } + } + + verifyPassword(email, password) { + const user = this.findUserByEmail(email); + if (!user || !user.password) { + return false; + } + return user.password === this.hashPassword(password); + } + + changePassword(email, oldPassword, newPassword) { + if (!this.verifyPassword(email, oldPassword)) { + throw new Error('原密码不正确'); + } + + return this.setPassword(email, newPassword); + } + + changeUsername(email, newUsername) { + const users = this.readUsers(); + const userIndex = users.findIndex((user) => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + // 检查新用户名是否已存在（排除当前用户） + if (users.some((user) => user.username === newUsername && user.email !== email)) { + throw new Error('用户名已存在'); + } + + const oldUsername = users[userIndex].username; + users[userIndex].username = newUsername; + users[userIndex].updatedAt = new Date().toISOString(); + + if (this.writeUsers(users)) { + console.log(`✅ 用户修改用户名: ${oldUsername} -> ${newUsername}`); + return true; + } else { + throw new Error('用户名修改失败'); + } + } + + deleteUser(email) { + const users = this.readUsers(); + const userIndex = users.findIndex((user) => user.email === email); + + if (userIndex === -1) { + throw new Error('用户不存在'); + } + + const deletedUser = users[userIndex]; + users.splice(userIndex, 1); + + if (this.writeUsers(users)) { + console.log(`✅ 用户账号已删除: ${deletedUser.username} (${email})`); + return true; + } else { + throw new Error('账号删除失败'); + } + } +} + +module.exports = UserManager; \ No newline at end of file -- 2.34.1