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// 引入所需的模块
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const express = require('express');
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const bcrypt = require('bcrypt');
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const cors = require('cors');
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const rateLimit = require('express-rate-limit');
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const morgan = require('morgan');
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// 创建 Express 应用实例
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const app = express();
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const PORT = 3000; // 可以根据需要修改端口
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// 使用中间件
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app.use(cors()); // 允许跨域请求
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app.use(express.json()); // 解析 JSON 请求体
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app.use(express.urlencoded({ extended: true })); // 解析 URL 编码请求体
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app.use(morgan('combined')); // 记录请求日志
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// 模拟的用户数据（在实际应用中，这通常来自数据库）
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const users = [
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{ username: 'user1', password: bcrypt.hashSync('password1', 10) },
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{ username: 'user2', password: bcrypt.hashSync('password2', 10) }
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];
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// 请求速率限制
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const loginLimiter = rateLimit({
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windowMs: 15 * 60 * 1000, // 15 分钟
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max: 100, // 每个 IP 最多允许 100 次请求
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message: 'Too many login attempts from this IP, please try again later.'
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});
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// 登录接口
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app.post('/login', loginLimiter, async (req, res) => {
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const { username, password } = req.body;
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const user = users.find(u => u.username === username);
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if (user && await bcrypt.compare(password, user.password)) {
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return res.status(200).json({ message: 'Login successful!' });
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} else {
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return res.status(401).json({ message: 'Invalid username or password.' });
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}
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});
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// 启动服务器
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app.listen(PORT, () => {
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console.log(`Server is running on http://localhost:${PORT}`);
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}); |
