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121 lines
3.5 KiB
121 lines
3.5 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 cors = require('cors');
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const app = express();
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const port = 3000;
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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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// 全局变量来存储学生数据
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let dataArray = [];
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let filePath = '';
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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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// 初始化或更新全局的学生数据数组
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dataArray = data.slice(1).map(row => ({
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studentID: row[0], // 根据列的实际索引进行调整
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name: row[1],
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credit: row[2] || null
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}));
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// 处理数据（这里只是打印到控制台，你可以保存到数据库等）
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console.log(data);
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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', (_, res) => {
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if (dataArray.length === 0) {
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return res.status(404).json({ error: 'No students found.' });
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}
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const randomIndex = Math.floor(Math.random() * dataArray.length);
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const randomStudent = dataArray[randomIndex];
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console.log('dataArray:', dataArray);
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res.json(randomStudent);
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});
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// 新的API端点来增加学生的credit
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app.post('/api/add-credit', express.json(), (req, res) => {
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const { name, studentID } = req.body;
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const student = dataArray.find(s => s.name === name && s.studentID === studentID);
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if (!student) {
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return res.status(404).json({ error: 'Student not found.' });
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}
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student.credit += 1;
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console.log('Updated dataArray:', dataArray);
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res.json({ message: 'Credit added successfully!' });
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});
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app.post('/api/credit', express.json(), (req, res) => {
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const { name, studentID, creditToAdd } = req.body;
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const student = dataArray.find(s => s.name === name && s.studentID === studentID);
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if (!student) {
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res.status(404).json({ message: 'Student not found!' });
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return;
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}
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student.credit += parseInt(creditToAdd);
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console.log('Updated dataArray:', dataArray);
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res.json({ message: 'Credit added successfully!' });
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// 创建一个新的工作簿
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const workbook = XLSX.utils.book_new();
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const worksheet = XLSX.utils.json_to_sheet(dataArray);
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// 将工作表添加到工作簿
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XLSX.utils.book_append_sheet(workbook, worksheet, 'Sheet1');
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// 保存工作簿为 Excel 文件
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const excelFilePath = 'C:/Users/Lenovo/Downloads/软工学生名单.xlsx';
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XLSX.writeFile(workbook, excelFilePath);
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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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});
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