52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
// backend/server.js
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require('dotenv').config();
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const express = require('express');
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const mysql = require('mysql2/promise');
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const cors = require('cors');
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const app = express();
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app.use(cors());
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app.use(express.json());
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// 数据库连接池
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const pool = mysql.createPool({
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host: process.env.DB_HOST || 'localhost',
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user: process.env.DB_USER || 'root',
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password: process.env.DB_PASSWORD || '123456',
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database: process.env.DB_NAME || 't_app_wcs_task_bak',
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waitForConnections: true,
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// 指定连接池允许的最大连接数
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connectionLimit: 10
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});
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// 测试数据库连接
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pool.getConnection()
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.then(connection => {
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console.log('数据库连接成功');
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connection.release();
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})
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.catch(err => {
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console.error('数据库连接失败:', err);
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});
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// 根路径路由
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app.get('/', (req, res) => {
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res.send('后端服务正常运行！');
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});
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// API路由：获取任务数据
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app.get('/api/wcs-tasks', async (req, res) => {
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try {
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const [rows] = await pool.query('SELECT * FROM t_app_wcs_task_bak');
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res.json(rows);
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} catch (error) {
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console.error('数据库查询失败:', error);
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res.status(500).json({ error: '服务器内部错误' });
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}
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});
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// 启动服务
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const PORT = process.env.PORT || 3000; // 修改为 3000 端口
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app.listen(PORT, () => {
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console.log(`后端API运行在 http://localhost:${PORT}`);
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}); |