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80 lines
2.7 KiB
80 lines
2.7 KiB
const express = require('express');
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const multer = require('multer');
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const XLSX = require('xlsx');
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const mysql = require('mysql2');
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const cors = require('cors');
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const app = express();
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const port = 3001;
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// 使用 CORS
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app.use(cors());
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// 设置 multer 存储配置
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const storage = multer.memoryStorage();
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const upload = multer({
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storage: storage,
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limits: { fileSize: 5 * 1024 * 1024 } // 5MB 限制
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});
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// 创建数据库连接池
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const pool = mysql.createPool({
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host: 'localhost',
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user: 'root',
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password: 'mysql123',
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database: 'mysql'
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});
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// 处理文件上传的路由
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app.post('/upload', upload.single('file'), (req, res) => {
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try {
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const file = req.file;
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if (!file) {
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return res.status(400).json({ message: 'No file uploaded.' });
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}
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// 使用 xlsx 库读取 Excel 文件
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const workbook = XLSX.read(file.buffer, { type: 'buffer' });
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const sheetName = workbook.SheetNames[0];
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const worksheet = workbook.Sheets[sheetName];
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const data = XLSX.utils.sheet_to_json(worksheet, { header: 1 });
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// 插入数据到数据库
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data.forEach(row => {
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const query = 'INSERT INTO students (student_id, name, points) VALUES (?, ?, ?)';
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pool.query(query, [row.student_id, row.name, row.points], (error, results, fields) => {
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if (error) {
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console.error('Error inserting data:', error);
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} else {
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console.log('Row inserted successfully:', row);
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}
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});
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});
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res.json({ message: 'File uploaded and processed successfully!' });
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} catch (error) {
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console.error('Error processing file:', error);
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res.status(500).json({ message: 'Error processing file: ' + error.message });
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}
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});
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// 新的API端点来返回随机学生数据
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app.get('/api/get-random-student', (req, res) => {
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// 注意：这里需要实现从数据库中获取随机学生数据的逻辑
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// 由于这需要数据库操作，这里只是一个示例
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pool.query('SELECT * FROM students ORDER BY RAND() LIMIT 1', (error, results) => {
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if (error) {
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console.error('Error fetching random student:', error);
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return res.status(500).json({ message: 'Error fetching random student' });
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}
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if (results.length === 0) {
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return res.status(404).json({ error: 'No students found.' });
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}
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const randomStudent = results[0];
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res.json(randomStudent);
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});
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});
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app.listen(port, () => {
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console.log(`Server is running on http://localhost:${port}`);
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}); |