Node + express + mysql + Navicat for mysql 实现模糊查询

最新推荐文章于 2024-12-17 22:36:55 发布

原创最新推荐文章于 2024-12-17 22:36:55 发布 · 2.4k 阅读

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CC 4.0 BY-SA版权

本文介绍如何使用Node.js和Express框架结合MySQL数据库创建一个简单的API应用，演示了基本的用户查询功能，并实现了跨域访问支持。

话不多说直接上代码..

仓库地址

app.js

const express = require('express');
// const bodyparser = require('body-parser');
const mysql = require('mysql');
const app = express();
const router = express.Router();


app.use(express.urlencoded({}));


let pool = mysql.createPool({
	host:'localhost',
	user:'root',
	password:'root',
	database:'query',
	port:3306
})


// 设置为可跨域
app.all('*', function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "X-Requested-With");
    res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
    res.header("X-Powered-By",' 3.2.1')
    res.header("Content-Type", "application/json;charset=utf-8");
    next();
});


//这里是 /login  前端请求地址为 http://localhost:8001/login
app.get('/login',(req,res)=>{
	var value = req.query.val;
	pool.query(`SELECT * FROM students where name like '%${value}%'`, (qerr,vals,fields)=>{
		let rows = JSON.stringify(vals);
		res.send(rows)
	})	
})

app.use(express.static('./'))

app.listen(8001,() => {
	console.log('ok');
})