node.js链接mysql做api

/* 引入express框架 */
const express = require('express');
const app = express();

/* 引入cors */
const cors = require('cors');
app.use(cors());

/* 引入body-parser */
const bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({
      extended: false }));
/* 引入mysql */
const mysql = require('mysql');
const conn = mysql.createConnection({
     
    host: 'localhost',
    user: 'root',
    password: 'root',
    database: 'db_user',
})
conn.connect();

/* 监听端口 */
app.listen(8080, () => {
     
    console.log('——————————服务已启动——————————');
})

app.get('/', (req, res) => {
     
    res.send('
服务已启动
');
    console.log(req.url)
})

app.get('/api/getUserList', (req, res) => {
     
    const sqlStr = 'SELECT * FROM td_userinfo'
    conn.query(sqlStr, (error, results) => {
     
        res.json({
     code: 10000, message: results})
    })
    console.log(req.query)
})
app.post('/api/getUserList', (req, res) => {
     
    const sqlStr = 'SELECT * FROM td_userinfo'
    conn.query(sqlStr, (error, results) => {
     
        /if (error) return res.json({
     code: 10001, message: error})
        res.json({
     code: 10000, message: results})
        console.log(results)
        console.log(req.url)
    })
    console.log(req.body)
})