ADD file via upload

get_excel.js

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