const mysql = require('mysql2'); const pool = mysql.createPool({ host: 'localhost', user: 'root', password: 'Skyinno251,', database: 'appserver', connectionLimit: 10 // 连接池最大连接数 }); pool.query('SELECT * FROM user', (err, rows) => { if (err) { console.error('Error querying database:', err); //res.status(500).send('Internal Server Error'); } else { //res.json(rows); } });