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4 Commits

Author SHA1 Message Date
luoyonghuang ac094b98a4 Merge branch 'main' of https://bdgit.educoder.net/pjmw9izve/double_work
1 month ago
luoyonghuang e943e599f5 modified: db.js
1 month ago
luoyonghuang 82d8a93396 Initial commit
2 months ago
luoyonghuang cbdf44c4d9 Initial commit
2 months ago

1
.gitignore vendored

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node_modules/

24
db.js

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const mysql = require('mysql2/promise');
// 创建连接池
const pool = mysql.createPool({
host: 'localhost', // 数据库地址
user: 'root', // 数据库用户名
password: '123456', // 数据库密码
database: 'class_k' ,// 使用的数据库
waitForConnections: true,
connectionLimit: 10,
queueLimit: 0
});
// 测试数据库连接
pool.getConnection((err, connection) => {
if (err) {
console.error('Error connecting to the database:', err);
} else {
console.log('Database connected successfully!');
connection.release(); // 释放连接
}
});
module.exports = pool;

1996
package-lock.json generated

File diff suppressed because it is too large Load Diff

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{
"dependencies": {
"body-parser": "^1.20.3",
"exceljs": "^4.4.0",
"express": "^4.21.0",
"multer": "^1.4.5-lts.1",
"mysql2": "^3.11.3",
"xlsx": "^0.18.5"
}
}

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>回答问题</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
}
.container {
text-align: center;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px); /* 增加模糊效果 */
}
#question {
font-size: 2.5em;
margin-bottom: 30px;
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
button {
padding: 15px 30px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #fc5c7d, #6a82fb); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
margin: 10px;
}
button:hover {
background: linear-gradient(45deg, #e54d84, #5a72d6); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
</style>
</head>
<body>
<div class="container">
<div id="question">请重复问题,选择正确或错误:</div>
<button id="repeatCorrectButton">准确重复</button>
<button id="repeatWrongButton">未准确重复</button>
<div id="questionResult"></div> <!-- 显示重复问题的结果 -->
<div id="answerContainer" style="display:none;">
<p>现在回答问题:</p>
<button id="correctButton">回答正确</button>
<button id="partiallyCorrectButton">部分正确</button>
<button id="wrongButton">回答错误</button>
</div>
<button class="back-button" onclick="window.location.href='select.html'">返回点名页面</button>
<div id="result"></div>
<div id="studentInfo"></div> <!-- 显示学生信息 -->
</div>
<script>
async function updateScore(student_id, points) {
try {
const response = await fetch('/api/update-score', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ student_id, points }),
});
if (!response.ok) {
throw new Error('网络响应不正常');
}
const data = await response.text(); // 使用 text() 解析纯数字响应
console.log('更新后的分数:', data); // data 是字符串形式的分数
return data; // 返回更新后的分数字符串
} catch (error) {
console.error('分数更新失败:', error);
return null;
}
}
const urlParams = new URLSearchParams(window.location.search);
const student_name = urlParams.get('student_name');
const student_id = urlParams.get('student_id');
const repeatCorrectButton = document.querySelector('#repeatCorrectButton');
const repeatWrongButton = document.querySelector('#repeatWrongButton');
const questionResultDisplay = document.querySelector('#questionResult');
const correctButton = document.querySelector('#correctButton');
const partiallyCorrectButton = document.querySelector('#partiallyCorrectButton');
const wrongButton = document.querySelector('#wrongButton');
const resultDisplay = document.querySelector('#result');
const answerContainer = document.querySelector('#answerContainer');
const studentInfoDisplay = document.querySelector('#studentInfo');
// 显示学生姓名和学号
studentInfoDisplay.textContent = `学生: ${student_name} 学号: ${student_id}`;
// 正确重复问题处理 +0.5
repeatCorrectButton.addEventListener('click', () => {
updateScore(student_id, 0.5)
.then(newscore => {
if (newscore !== null) {
questionResultDisplay.textContent = `重复正确!${student_id} 的当前积分: ${newscore}`; // 直接使用字符串
answerContainer.style.display = 'block'; // 显示回答问题部分
} else {
console.error('更新分数失败');
questionResultDisplay.textContent = `更新分数失败,请重试。`;
}
})
.catch(error => {
console.error('请求失败:', error);
questionResultDisplay.textContent = `更新分数失败,请重试。`;
});
});
// 未准确重复问题处理 -1
repeatWrongButton.addEventListener('click', () => {
updateScore(student_id, -1)
.then(newscore => {
if (newscore !== null) {
questionResultDisplay.textContent = `重复错误!${student_id} 的当前积分: ${newscore}`; // 直接使用字符串
answerContainer.style.display = 'block'; // 显示回答问题部分
} else {
console.error('更新分数失败');
questionResultDisplay.textContent = `更新分数失败,请重试。`;
}
})
.catch(error => {
console.error('请求失败:', error);
questionResultDisplay.textContent = `更新分数失败,请重试。`;
});
});
// 回答问题的处理
correctButton.addEventListener('click', () => {
updateScore(student_id, 3)
.then(newscore => {
if (newscore !== null) {
resultDisplay.textContent = `回答完全正确!${student_id} 的当前积分: ${newscore}`; // 直接使用字符串
} else {
console.error('更新分数失败');
resultDisplay.textContent = `更新分数失败,请重试。`;
}
})
.catch(error => {
console.error('请求失败:', error);
resultDisplay.textContent = `更新分数失败,请重试。`;
});
});
partiallyCorrectButton.addEventListener('click', () => {
updateScore(student_id, 1.5)
.then(newscore => {
if (newscore !== null) {
resultDisplay.textContent = `回答部分正确!${student_id} 的当前积分: ${newscore}`; // 直接使用字符串
} else {
console.error('更新分数失败');
resultDisplay.textContent = `更新分数失败,请重试。`;
}
})
.catch(error => {
console.error('请求失败:', error);
resultDisplay.textContent = `更新分数失败,请重试。`;
});
});
wrongButton.addEventListener('click', () => {
updateScore(student_id, 0.5)
.then(newscore => {
if (newscore !== null) {
resultDisplay.textContent = `回答基本正确!${student_id} 的当前积分: ${newscore}`; // 直接使用字符串
} else {
console.error('更新分数失败');
resultDisplay.textContent = `更新分数失败,请重试。`;
}
})
.catch(error => {
console.error('请求失败:', error);
resultDisplay.textContent = `更新分数失败,请重试。`;
});
});
</script>
</body>
</html>

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>选择页面</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
}
.container {
text-align: center;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px); /* 增加模糊效果 */
}
#nameDisplay {
font-size: 2.5em;
margin-bottom: 30px;
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
button {
padding: 15px 30px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #fc5c7d, #6a82fb); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
margin: 10px;
}
button:hover {
background: linear-gradient(45deg, #e54d84, #5a72d6); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
</style>
</head>
<body>
<div class="container">
<div id="nameDisplay">欢迎, </div>
<button id="answerButton">老实回答问题</button>
<button id="lotteryButton">消耗积分抽奖</button>
</div>
<script>
// 获取URL中的参数名字
const urlParams = new URLSearchParams(window.location.search);
const name = urlParams.get('student_name');
const id = urlParams.get('student_id');
// 显示被抽中的名字
const nameDisplay = document.querySelector('#nameDisplay');
nameDisplay.textContent = ` ${name} 你的选择是:`;
// 回答问题功能,跳转到回答问题页面
document.querySelector('#answerButton').addEventListener('click', () => {
window.location.href = `answer.html?student_name=${encodeURIComponent(name)}&student_id=${encodeURIComponent(id)}`;
});
// 抽奖功能,跳转到抽奖页面
document.querySelector('#lotteryButton').addEventListener('click', () => {
window.location.href = `lottery.html?student_name=${encodeURIComponent(name)}&student_id=${encodeURIComponent(id)}`;
});
</script>
</body>
</html>

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>课堂管理系统</title>
<style>
body {
font-family: 'Helvetica Neue', Arial, sans-serif;
background: linear-gradient(135deg, #2C3E50, #4CA1AF); /* 深色渐变背景 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ECF0F1; /* 浅色文字 */
}
.container {
text-align: center;
background: rgba(52, 73, 94, 0.9); /* 更深的透明背景 */
padding: 50px;
border-radius: 25px; /* 更加圆润的边角 */
box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5); /* 增强阴影效果 */
backdrop-filter: blur(15px); /* 背景模糊效果 */
}
h1 {
margin-bottom: 30px;
font-size: 2.5em;
letter-spacing: 1px; /* 字母间距 */
text-transform: uppercase; /* 大写 */
text-shadow: 1px 1px 5px rgba(0, 0, 0, 0.3); /* 字体阴影 */
}
.button-group {
display: flex;
flex-direction: column;
gap: 20px;
}
button {
padding: 15px 25px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #FF6F61, #FF3D00); /* 动感渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
outline: none; /* 去掉按钮轮廓 */
}
button:hover {
background: linear-gradient(45deg, #FF4D00, #FF6F61); /* 悬停时的渐变变化 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
}
@media (max-width: 600px) {
.button-group {
flex-direction: column;
}
}
</style>
</head>
<body>
<div class="container">
<h1>课堂管理系统</h1>
<div class="button-group">
<button onclick="alert('开始点名')">开始点名</button>
<button onclick="alert('查看成绩')">查看成绩</button>
<button onclick="alert('管理学生')">管理学生</button>
</div>
</div>
</body>
</html>

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>课堂管理系统</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
}
.container {
text-align: center;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px); /* 增加模糊效果 */
}
h1 {
margin-bottom: 40px;
font-size: 2.5em;
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
.button-group {
display: flex;
flex-direction: column;
gap: 20px;
}
button {
padding: 15px 30px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #6a82fb, #fc5c7d); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
button:hover {
background: linear-gradient(45deg, #5a72d6, #e54d84); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
@media (max-width: 600px) {
.button-group {
flex-direction: column;
}
}
</style>
</head>
<body>
<div class="container">
<h1>课堂管理系统</h1>
<div class="button-group">
<button onclick="alert('开始点名')">开始点名</button>
<button onclick="alert('查看成绩')">查看成绩</button>
<button onclick="alert('管理学生')">管理学生</button>
</div>
</div>
</body>
</html>

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>课堂点名</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
}
.container {
text-align: center;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px); /* 增加模糊效果 */
}
h1 {
margin-bottom: 40px;
font-size: 2.5em;
color: #ffffff;
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
#studentNameDisplay {
font-size: 1.8em;
margin-bottom: 30px;
min-height: 50px;
}
.button-group {
display: flex;
justify-content: center;
gap: 20px;
flex-wrap: wrap;
}
button {
padding: 15px 30px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #6a82fb, #fc5c7d); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
button:hover {
background: linear-gradient(45deg, #5a72d6, #e54d84); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
#absentButton {
background: linear-gradient(45deg, #f44336, #e53935); /* 渐变红色按钮 */
}
#absentButton:hover {
background: linear-gradient(45deg, #d32f2f, #c62828); /* 悬停时加深 */
}
.back-button {
margin-top: 30px;
background: linear-gradient(45deg, #2196F3, #1e88e5); /* 渐变蓝色按钮 */
}
.back-button:hover {
background: linear-gradient(45deg, #1976d2, #1565c0); /* 悬停时加深 */
}
</style>
</head>
<body>
<div class="container">
<h1>课堂点名</h1>
<div id="studentNameDisplay">请点击“随机点名”按钮</div>
<div class="button-group">
<button id="startAttendance">随机点名</button>
<button id="presentButton" style="display:none;"></button>
<button id="absentButton" style="display:none;">没到</button>
</div>
<button class="back-button" onclick="window.location.href='index.html'">返回主页面</button>
</div>
<script>
const studentNameDisplay = document.getElementById('studentNameDisplay');
const startAttendanceButton = document.getElementById('startAttendance');
const presentButton = document.getElementById('presentButton');
const absentButton = document.getElementById('absentButton');
let currentStudent = null;
// 随机点名按钮点击事件
startAttendanceButton.addEventListener('click', async () => {
try {
// 向后端请求随机学生
const response = await fetch('http://localhost:3000/api/random-call');
const data = await response.json();
if (data.student_id && data.student_name) {
currentStudent = data;
studentNameDisplay.textContent = `当前学生: ${currentStudent.student_name}`;
presentButton.style.display = 'inline-block';
absentButton.style.display = 'inline-block';
startAttendanceButton.disabled = true;
} else {
alert('无法获取学生数据');
}
} catch (error) {
console.error('获取学生失败', error);
alert('获取学生失败,请重试');
}
});
// 到场按钮点击事件
presentButton.addEventListener('click', async () => {
if (currentStudent) {
await updatePoints(currentStudent.student_id, 0.5); // 到场加0.5分
alert(`${currentStudent.student_name} 已到加0.5分`);
resetAttendance();
}
});
// 没到按钮点击事件
absentButton.addEventListener('click', async () => {
if (currentStudent) {
await updatePoints(currentStudent.student_id, -1); // 未到减1分
alert(`${currentStudent.student_name} 未到减1分`);
resetAttendance();
}
});
// 更新分数的函数
async function updatePoints(studentId, points) {
try {
// 发送请求更新分数
const response = await fetch('http://localhost:3000/api/update-score', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ student_id: studentId, points }),
});
if (!response.ok) {
throw new Error('更新分数失败');
}
} catch (error) {
console.error('更新分数失败', error);
alert('更新分数失败,请重试');
}
}
// 重置点名的函数
function resetAttendance() {
studentNameDisplay.textContent = '请点击“随机点名”按钮';
presentButton.style.display = 'none';
absentButton.style.display = 'none';
startAttendanceButton.disabled = false;
}
</script>
</body>
</html>

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>课堂管理系统</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
}
.container {
text-align: center;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px); /* 增加模糊效果 */
}
h1 {
margin-bottom: 40px;
font-size: 2.5em;
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
.button-group {
display: flex;
flex-direction: column;
gap: 20px;
}
button {
padding: 15px 30px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #6a82fb, #fc5c7d); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
button:hover {
background: linear-gradient(45deg, #5a72d6, #e54d84); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
@media (max-width: 600px) {
.button-group {
flex-direction: column;
}
}
</style>
</head>
<body>
<div class="container">
<h1>2024K班课堂管理系统</h1>
<div class="button-group">
<button onclick="window.location.href='dianming.html'">课堂点名</button>
<button onclick="window.location.href='select.html'">随机提问</button>
<button onclick="window.location.href='score_display.html'">积分排名</button>
<button onclick="document.getElementById('fileInput').click()">导入学生名单</button>
<input type="file" id="fileInput" accept=".xlsx" style="display:none;" onchange="importStudents(event)">
<button onclick="downloadScores()">导出学生成绩</button>
</div>
</div>
<script>
function downloadScores() {
window.location.href = '/api/export-scores';
}
async function importStudents() {
const fileInput = document.getElementById('fileInput');
const file = fileInput.files[0]; // 获取选中的文件
if (!file) {
alert('请选择一个文件');
return;
}
const formData = new FormData();
formData.append('file', file); // 将文件添加到FormData中键名为'file'
try {
const response = await fetch('/api/upload', { // 假设后端API的路径为/api/upload
method: 'POST',
body: formData
});
if (response.ok) {
const result = await response.json();
console.log('上传成功:', result);
alert('学生名单导入成功!');
} else {
console.error('上传失败:', response.statusText);
alert('导入失败,请重试。');
}
} catch (error) {
console.error('请求错误:', error);
alert('发生错误,请检查控制台了解详细信息。');
}
}
</script>
</body>
</html>

@ -0,0 +1,209 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>抽奖页面</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
transition: background-color 0.5s ease;
}
.container {
text-align: center;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px); /* 增加模糊效果 */
transition: opacity 0.5s ease;
}
#pointsDisplay {
font-size: 1.5em;
margin-bottom: 20px;
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
button {
padding: 15px 30px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #fc5c7d, #6a82fb); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
margin: 10px;
}
button:hover {
background: linear-gradient(45deg, #e54d84, #5a72d6); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
#loading {
display: none;
font-size: 1.5em;
margin-top: 20px;
}
</style>
</head>
<body>
<div class="container">
<div id="pointsDisplay">当前积分: </div>
<button id="startLotteryButton">开始抽奖</button>
<button class="back-button" id="backButton">返回前一页面</button>
<div id="result"></div>
<div id="loading">正在加载,请稍候...</div>
</div>
<script>
const urlParams = new URLSearchParams(window.location.search);
let student_name = urlParams.get('student_name');
let student_id = urlParams.get('student_id');
const pointsDisplay = document.querySelector('#pointsDisplay');
const startLotteryButton = document.querySelector('#startLotteryButton');
const resultDisplay = document.querySelector('#result');
const backButton = document.getElementById('backButton');
const loadingIndicator = document.getElementById('loading');
// 睡眠函数,让页面跳转更自然
function sleep(d) {
return new Promise(resolve => setTimeout(resolve, d));
}
// 全局变量,用于存储用户积分
let userPoints = null;
// 获取该用户的分数
const fetchStudentScore = async (student_id) => {
try {
const response = await fetch('http://localhost:3000/api/get-score', {
method: 'POST', // 使用 POST 方法
headers: {
'Content-Type': 'application/json', // 设置请求体的内容类型
},
body: JSON.stringify({ student_id }), // 将 student_id 放入请求体
});
if (!response.ok) {
alert('分数获取失败');
return null; // 返回 null 表示获取失败
}
// 直接返回响应体中的数字
const data = await response.json(); // 直接解析为 JSON
const score = data.score;
return score; // 返回数字
} catch (error) {
alert('网络请求失败');
return null; // 返回 null 表示获取失败
}
};
// 更新用户分数
async function updateScore(student_id, points) {
try {
const response = await fetch('http://localhost:3000/api/update-score', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ student_id, points }),
});
if (!response.ok) {
throw new Error('网络响应不正常');
}
// 使用 text() 解析响应,得到字符串形式的分数
const data = await response.text();
let score = Number(data); // 转换为数字
return score; // 返回数字
} catch (error) {
console.error('分数更新失败:', error);
return null; // 返回 null 表示更新失败
}
}
// 初始化函数,用于设置用户积分
async function init() {
userPoints = await fetchStudentScore(student_id); // 获取分数并存储到全局变量
pointsDisplay.textContent = `${student_name} 的当前积分: ${userPoints}`;
}
// 执行初始化函数
init();
// 设置返回按钮的 URL
backButton.onclick = () => {
loadingIndicator.style.display = 'block'; // 显示加载提示
window.location.href = `choice.html?student_name=${encodeURIComponent(student_name)}&student_id=${encodeURIComponent(student_id)}`;
};
// 开始抽奖
startLotteryButton.addEventListener('click', async () => {
if (userPoints >= 2) {
userPoints = await updateScore(student_id, -2); // 积分-2
pointsDisplay.textContent = `${student_name} 的当前积分: ${userPoints}`;
// 随机选择奖品
const prizes = ["跳过权", "再来一次", "什么也没有发生", "加3积分且跳过"];
const randomPrize = prizes[Math.floor(Math.random() * prizes.length)];
resultDisplay.textContent = `你赢得了: ${randomPrize}`;
// 等待 2 秒以展示结果
await new Promise(resolve => setTimeout(resolve, 2000));
loadingIndicator.style.display = 'block'; // 显示加载提示
if (randomPrize === '跳过权') {
await sleep(2000);
window.location.href = `select.html?student_name=${encodeURIComponent(student_name)}&student_id=${encodeURIComponent(student_id)}`;
}
else if (randomPrize === '再来一次') {
userPoints = await updateScore(student_id, 2); // 积分返回2
await sleep(2000);
window.location.href = `lottery.html?student_name=${encodeURIComponent(student_name)}&student_id=${encodeURIComponent(student_id)}`;
}
else if (randomPrize === '什么也没有发生') {
await sleep(2000);
window.location.href = `answer.html?student_name=${encodeURIComponent(student_name)}&student_id=${encodeURIComponent(student_id)}`;
}
else if (randomPrize === '加3积分且跳过') {
userPoints = await updateScore(student_id, 3); // 积分+3
await sleep(2000);
window.location.href = `select.html?student_name=${encodeURIComponent(student_name)}&student_id=${encodeURIComponent(student_id)}`;
}
} else {
resultDisplay.textContent = "积分不足,无法抽奖!返回回答问题";
loadingIndicator.style.display = 'block'; // 显示加载提示
await sleep(2000);
window.location.href = `answer.html?student_name=${encodeURIComponent(student_name)}&student_id=${encodeURIComponent(student_id)}`;
}
});
</script>
</body>
</html>

@ -0,0 +1,242 @@
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>积分显示</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff; /* 白色字体 */
}
.container {
width: 90%;
max-width: 800px;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
backdrop-filter: blur(10px); /* 增加模糊效果 */
border: 1px solid rgba(255, 255, 255, 0.2);
text-align: center;
}
h1 {
margin-bottom: 30px;
font-size: 2em;
color: #ff5722; /* 标题颜色 */
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
#sortButton {
padding: 15px 30px;
font-size: 1.1em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #6a82fb, #fc5c7d); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
margin-bottom: 20px;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
#sortButton:hover {
background: linear-gradient(45deg, #5a72d6, #e54d84); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
table {
width: 100%;
border-collapse: collapse;
margin-top: 10px;
}
th, td {
padding: 12px 15px;
border-bottom: 1px solid rgba(255, 255, 255, 0.2); /* 边框颜色 */
font-size: 1em;
color: #ffffff; /* 字体颜色 */
}
th {
background-color: #4CAF50; /* 表头背景颜色 */
color: white;
}
tr:hover {
background-color: rgba(255, 255, 255, 0.1); /* 悬停行的颜色 */
}
.button-group {
margin-top: 30px;
display: flex;
justify-content: space-between;
gap: 10px;
}
.back-button, .clear-button {
padding: 15px 30px;
font-size: 1.1em;
border: none;
border-radius: 50px;
color: white;
cursor: pointer;
transition: background-color 0.3s, transform 0.2s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
.back-button {
background: linear-gradient(45deg, #6a82fb, #fc5c7d); /* 渐变背景 */
}
.back-button:hover {
background: linear-gradient(45deg, #5a72d6, #e54d84); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
.clear-button {
background: linear-gradient(45deg, #f44336, #e53935); /* 渐变背景 */
}
.clear-button:hover {
background: linear-gradient(45deg, #d32f2f, #c62828); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
@media (max-width: 600px) {
th, td {
padding: 8px 10px;
}
#sortButton, .button-group button {
width: 100%;
margin: 10px 0;
}
}
</style>
</head>
<body>
<div class="container">
<h1>2024K班积分排名</h1>
<button id="sortButton">切换排序 (降序)</button>
<table>
<thead>
<tr>
<th>姓名</th>
<th>学号</th>
<th>积分</th>
</tr>
</thead>
<tbody id="studentList">
<!-- 学生积分将在此处显示 -->
</tbody>
</table>
<div class="button-group">
<button class="back-button" onclick="window.location.href='index.html'">返回主页面</button>
<button class="clear-button" id="clearButton">清除所有数据</button>
</div>
</div>
<script>
const studentList = document.getElementById('studentList');
const sortButton = document.getElementById('sortButton');
const clearButton = document.getElementById('clearButton');
let ascend = false; // 默认降序
//删除表
async function deleteTable(tableName) {
try {
const response = await fetch('/api/delete-table', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify({ tableName }),
});
if (!response.ok) {
throw new Error('删除表失败');
}
const data = await response.json();
alert(data.message); // 成功后显示消息
} catch (error) {
console.error('删除表操作失败:', error);
alert('删除表失败');
}
}
// 获取按分数降序排列的学生排名
async function fetchDescendRanking() {
try {
const response = await fetch('/api/descend_ranking');
if (!response.ok) {
return null;
}
const ranking = await response.json(); // 获取并解析为JSON数组
return ranking; // 返回排名数组
} catch (error) {
console.error('请求失败:', error);
return null;
}
}
// 获取按分数升序排列的学生排名
async function fetchAscendRanking() {
try {
const response = await fetch('/api/ascend_ranking');
if (!response.ok) {
return null;
}
const ranking = await response.json(); // 获取并解析为JSON数组
return ranking; // 返回排名数组
} catch (error) {
console.error('请求失败:', error);
return null;
}
}
async function displayStudents() {
let ranking; // 声明 ranking 变量
if (ascend) {
ranking = await fetchAscendRanking(); // 获取升序排名
} else {
ranking = await fetchDescendRanking(); // 获取降序排名
}
studentList.innerHTML = ''; // 清空表格内容
// 只显示前10名学生
ranking.slice(0, 10).forEach(student => {
studentList.innerHTML += `
<tr>
<td>${student.student_name}</td> <!-- 学生姓名 -->
<td>${student.student_id}</td> <!-- 学生ID -->
<td>${student.score}</td> <!-- 学生分数 -->
</tr>
`;
});
}
sortButton.addEventListener('click', () => {
ascend = !ascend;
sortButton.textContent = `切换排序 (${ascend ? '升序' : '降序'})`;
displayStudents();
});
clearButton.addEventListener('click', () => {
const confirmation = confirm("确定要清除所有学生数据吗?此操作无法撤销!");
if (confirmation) {
deleteTable('students');
displayStudents(); // 重新显示清空后的数据
}
});
displayStudents();
</script>
</body>
</html>

@ -0,0 +1,165 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>随机点名</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background: linear-gradient(135deg, #283c86, #45a247); /* 深蓝到绿色的渐变 */
height: 100vh;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
color: #ffffff;
}
.container {
text-align: center;
background: rgba(50, 50, 70, 0.9); /* 更深的背景色 */
padding: 40px;
border-radius: 20px;
box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
border: 1px solid rgba(255, 255, 255, 0.2);
backdrop-filter: blur(10px); /* 增加模糊效果 */
}
#nameDisplay {
font-size: 2.5em;
margin-bottom: 30px;
padding: 20px;
border-radius: 10px;
background-color: rgba(255, 255, 255, 0.2);
transition: all 0.3s ease;
text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5); /* 文字阴影 */
}
#nameDisplay.active {
transform: scale(1.1);
color: #ffeb3b;
}
button {
padding: 15px 30px;
font-size: 1.2em;
border: none;
border-radius: 50px;
background: linear-gradient(45deg, #fc5c7d, #6a82fb); /* 渐变按钮 */
color: white;
cursor: pointer;
transition: transform 0.2s, background 0.3s, box-shadow 0.3s;
box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
margin: 10px;
}
button:hover {
background: linear-gradient(45deg, #e54d84, #5a72d6); /* 悬停时加深 */
transform: translateY(-3px); /* 悬停时上移效果 */
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
button:disabled {
background-color: #999;
cursor: not-allowed;
}
button + button {
margin-left: 15px;
}
</style>
</head>
<body>
<div class="container">
<div id="nameDisplay">准备开始提问</div>
<button id="startButton">开始</button>
<button id="stopButton" disabled>停止</button>
<button class="back-button" onclick="window.location.href='index.html'">返回主页面</button>
</div>
<script>
let names = [];
let intervalId = null;
// 获取 DOM 元素
const nameDisplay = document.querySelector('#nameDisplay');
const startButton = document.querySelector('#startButton');
const stopButton = document.querySelector('#stopButton');
// 页面加载时获取学生名单
window.addEventListener('DOMContentLoaded', fetchStudents);
// 获取学生名单
async function fetchStudents() {
try {
const response = await fetch('/api/get-students');
if (!response.ok) {
throw new Error('Network response was not ok');
}
const data = await response.json();
names = data.map(student => student.student_name);
} catch (error) {
console.error('Error fetching student list:', error);
}
}
// 动态更新显示效果
const updateNameDisplay = (name) => {
nameDisplay.textContent = `点到: ${name}`;
nameDisplay.classList.add('active');
setTimeout(() => {
nameDisplay.classList.remove('active');
}, 300);
};
// 开始滚动显示
startButton.addEventListener('click', () => {
startButton.disabled = true;
stopButton.disabled = false;
intervalId = setInterval(() => {
// 从 names 数组中随机选择一个名字进行滚动显示
const randomIndex = Math.floor(Math.random() * names.length);
const selectedName = names[randomIndex];
// 更新显示选中的名字
updateNameDisplay(selectedName);
}, 100); // 每100毫秒滚动显示一次
});
// 停止滚动并通过后端决定最终选择的学生
stopButton.addEventListener('click', async () => {
clearInterval(intervalId);
startButton.disabled = false;
stopButton.disabled = true;
try {
const response = await fetch('/api/random-call');
if (!response.ok) {
throw new Error('Network response was not ok');
}
const data = await response.json();
// 从后端返回的数据中获取学生名字
const selectedName = data.student_name; // student_name 属性
if (selectedName) {
// 更新显示选中的学生
updateNameDisplay(selectedName);
// 跳转到新页面并传递被选中的名字
window.location.href = `choice.html?student_name=${encodeURIComponent(data.student_name)}&student_id=${encodeURIComponent(data.student_id)}`;
} else {
console.error('未返回有效学生数据');
}
} catch (error) {
console.error('请求失败:', error);
}
});
</script>
</body>
</html>

@ -0,0 +1,51 @@
const express = require('express');
const router = express.Router();
const multer = require('multer');
const randomSelect = require('./services/randomSelect');
const ranking = require('./services/ranking');
const classManager = require('./services/classManager');
const scoreManager = require('./services/scoreManager');
const TableManager = require('./services/delete-table');
const pool = require('./db');
// 文件上传配置
const upload = multer({ dest: 'uploads/' });
// 路由 - 添加班级
router.post('/upload', upload.single('file'), classManager.addClass);
// 路由 - 随机点名
router.get('/random-call', randomSelect.selectStudent);
// 路由 - 获取排名
router.get('/ascend_ranking', ranking.get_ascend_Ranking);
router.get('/descend_ranking', ranking.get_descend_Ranking);
// 路由 - 更新分数
router.post('/update-score', scoreManager.updateScore);
//路由 - 获取某个id的分数
router.post('/get-score', scoreManager.getStudentScore);
//路由 - 删除班级
router.post('/delete-table', TableManager.deleteTable);
//路由 - 导出成绩
router.get('/export-scores', scoreManager.exportScores);
// 获取全部学生名单
router.get('/get-students', async (req, res) => {
let connection; // 声明连接变量
try {
connection = await pool.getConnection(); // 从连接池获取连接
const [students] = await connection.query('SELECT student_name FROM students'); // 执行查询
const studentNames = students.map(student => ({ student_name: student.student_name })); // 只保留 student_name 字段
res.json(studentNames); // 返回只包含 student_name 的结果
} catch (error) {
console.error('Error fetching students:', error); // 记录错误信息
res.status(500).send({ error: 'Failed to fetch students' }); // 返回500错误响应
} finally {
if (connection) connection.release(); // 确保连接被释放
}
});
module.exports = router;

@ -0,0 +1,26 @@
const express = require('express');
const path = require('path');
const bodyParser = require('body-parser');
const router = require('./router');
const app = express();
// 中间件
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
// API 路由
app.use('/api', router);
// 静态文件
app.use(express.static(path.join(__dirname, 'public')));
// 处理 SPA 路由
app.get('*', (req, res) => {
res.sendFile(path.join(__dirname, 'public', 'index.html'));
});
// 启动服务器
const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
console.log(`Server running on port ${PORT}`);
});

@ -0,0 +1,65 @@
const fs = require('fs');
const path = require('path');
const xlsx = require('xlsx');
const pool = require('../db');
const classManager = {
addClass: async (req, res) => {
// 创建students表的SQL语句
const createTableQuery = `
CREATE TABLE IF NOT EXISTS students (
student_id INT AUTO_INCREMENT PRIMARY KEY,
student_name VARCHAR(255) NOT NULL,
score DECIMAL(5, 2),
call_count INT DEFAULT 0
);
`;
try {
// 先创建表
await pool.query(createTableQuery);
const filePath = req.file.path;
// 读取并解析Excel文件
const workbook = xlsx.readFile(filePath);
const sheetName = workbook.SheetNames[0];
const worksheet = workbook.Sheets[sheetName];
const students = xlsx.utils.sheet_to_json(worksheet);
// 定义所需的字段
const requiredFields = ['student_id','student_name'];
let hasError = false;
students.forEach(student => {
// 数据验证
const missingFields = requiredFields.filter(field =>!(field in student));
if (missingFields.length > 0) {
console.error(`Student data is missing fields: ${missingFields.join(', ')}`);
hasError = true;
return;
}
// 将学生数据插入数据库
const query = 'INSERT INTO students (student_id, student_name, score, call_count) VALUES (?,?, 2, 0)';
pool.query(query, [student.student_id, student.student_name], (error) => {
if (error) {
console.error(`Error inserting student: ${student.name}`, error);
hasError = true;
}
});
});
if (hasError) {
res.status(500).json({ message: 'Error adding class. Some students were not added successfully.' });
} else {
res.status(200).json({ message: 'Class added successfully!' });
}
} catch (err) {
console.error('Error creating students table:', err);
res.status(500).json({ message: 'Error creating table during class addition.' });
}
}
};
module.exports = classManager;

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const pool = require('../db');
async function deleteTable(req, res) {
const { tableName } = req.body; // 从请求体中获取表名
let connection;
try {
connection = await pool.getConnection();
await connection.query(`DROP TABLE IF EXISTS ??`, [tableName]); // 删除表
connection.release();
res.json({ message: `成功删除` });
} catch (error) {
console.error('删除表失败:', error);
res.status(500).json({ error: '删除表失败' });
} finally {
if (connection) {
connection.release();
}
}
}
module.exports = { deleteTable };

@ -0,0 +1,49 @@
const pool = require('../db');
async function selectStudent(req, res) {
try {
const connection = await pool.getConnection();
// 从数据库查询学生
const [students] = await connection.query('SELECT * FROM students');
// 计算权重的总和(使用 softmax 权重计算)
const totalWeight = students.reduce((acc, student) => acc + Math.exp(-student.score), 0);
// 将每个学生的权重归一化
const weightedStudents = students.map(student => ({
student,
weight: Math.exp(-student.score
) / totalWeight,
}));
// 生成随机数
const random = Math.random(); // 介于 0 和 1 之间
let sum = 0; // 用于累加权重
let selectedStudent = null;
// 遍历加权后的学生,累加权重,并判断随机数落在哪个学生的区间
for (let i = 0; i < weightedStudents.length; i++) {
sum += weightedStudents[i].weight; // 累加当前学生的权重
if (random <= sum) { // 如果随机数小于或等于当前的累积权重
selectedStudent = weightedStudents[i].student; // 选中该学生
break; // 找到后立即退出循环
}
}
if (selectedStudent) {
res.send({ student_name: selectedStudent.student_name,
student_id: selectedStudent.student_id
});
} else {
res.status(404).send({ message: '无学生数据' });
}
connection.release();
} catch (error) {
res.status(500).send({ error: '随机选择学生失败' });
}
}
module.exports = { selectStudent };

@ -0,0 +1,25 @@
const pool = require('../db');
async function get_descend_Ranking(req, res) {
try {
const connection = await pool.getConnection();
const [ranking] = await connection.query('SELECT student_name, student_id, score FROM students ORDER BY score DESC');
connection.release();
res.json(ranking);
} catch (error) {
res.status(500).send({ error: '无法获取排名' });
}
}
async function get_ascend_Ranking(req, res) {
try {
const connection = await pool.getConnection();
const [ranking] = await connection.query('SELECT student_name, student_id, score FROM students ORDER BY score ASC');
connection.release();
res.json(ranking);
} catch (error) {
res.status(500).send({ error: '无法获取排名' });
}
}
module.exports = { get_ascend_Ranking, get_descend_Ranking };

@ -0,0 +1,115 @@
const pool = require('../db');
const ExcelJS = require('exceljs');
async function updateScore(req, res) {
const { student_id, points } = req.body;
let connection; // 在try块外部声明connection
try {
connection = await pool.getConnection();
// 更新学生的积分并增加点名次数
const [result] = await connection.query(
'UPDATE students SET score = score + ?, call_count = call_count + 1 WHERE student_id = ?',
[points, student_id]
);
if (result.affectedRows > 0) {
// 查询更新后的分数
const [rows] = await connection.query(
'SELECT score FROM students WHERE student_id = ?',
[student_id]
);
if (rows.length > 0) {
const updatedScore = rows[0].score;
return res.send(String(updatedScore));
} else {
return res.status(404).send('学生不存在');
}
} else {
return res.status(404).send('学生不存在');
}
} catch (error) {
console.error('数据库操作失败:', error);
return res.status(500).send('更新积分失败');
} finally {
if (connection) {
connection.release(); // 只有在connection已被赋值时才调用release
}
}
}
async function getStudentScore(req, res) {
const { student_id } = req.body;
let connection;
try {
connection = await pool.getConnection();
// 查询指定学生的分数
const [rows] = await connection.query(
'SELECT score FROM students WHERE student_id =?',
[student_id]
);
if (rows.length > 0) {
const score = rows[0].score;
// 修改这里构建包含student_id和score的对象并返回
return res.json({ student_id, score });
} else {
return res.status(404).json({ message: '学生不存在' });
}
} catch (error) {
console.error('数据库操作失败:', error);
return res.status(500).json({ error: '获取分数失败' });
} finally {
if (connection) {
connection.release();
}
}
}
async function exportScores(req, res) {
let connection;
try {
connection = await pool.getConnection();
// 查询学生的成绩
const [rows] = await connection.query('SELECT student_name, student_id, score FROM students');
// 创建一个工作簿和一个工作表
const workbook = new ExcelJS.Workbook();
const worksheet = workbook.addWorksheet('Scores');
// 添加列标题
worksheet.columns = [
{ header: 'Student Name', key: 'student_name', width: 20 },
{ header: 'Student ID', key: 'student_id', width: 15 },
{ header: 'Score', key: 'score', width: 10 },
];
// 将数据添加到工作表中
rows.forEach(row => {
worksheet.addRow(row);
});
// 设置响应头,告知浏览器以附件形式下载文件
res.setHeader('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
res.setHeader('Content-Disposition', 'attachment; filename=scores.xlsx');
// 生成并发送 Excel 文件
await workbook.xlsx.write(res);
res.end();
} catch (error) {
console.error('导出成绩失败:', error);
res.status(500).send({ error: '无法导出成绩' });
} finally {
if (connection) connection.release();
}
}
module.exports = { updateScore, getStudentScore,exportScores };
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