在Mac OS上将Node.js连接到XAMPP MySQL服务器一直报错error connecting: Error: connect ECONNREFUSED

以下為通過node.js連線本機mysql資料庫的方法：

var mysql = require('mysql');
var connection = mysql.createConnection({
  host     : 'localhost',
  user     : 'xxxx',//此處的xxxx替換為你的mysql登入使用者名稱
  password : 'xxxx',//此處的xxxx替換為你的mysql登入密碼
  database : 'xxxx',//此處的xxxx替換為你要連線database名稱
  socketPath : '/Applications/XAMPP/xamppfiles/var/mysql/mysql.sock',
  port:3306
});

connection.connect(function(err) {
  if (err) {
    console.error('error connecting: ' + err.stack);
    return;
  }

  console.log('connected as id ' + connection.threadId);
});

這裡的重點是要配置socketPath，否則會報以下這個錯：

error connecting: Error: connect ECONNREFUSED

不好意思  上面的是我从网上找的，照着写改来改去没起作用~~  依然连不上

最后解决办法是，

在服务器搞MYSQL服务，搭建数据库，或者是内网其他电脑起一个MYSQL服务，这边调用

MAC本地代码  不需要添加socketPath，即可完美调用本地nodejs接口

简单版代码如下

var express = require('express');
var app = express();
const routes = require('./routers');

const index=require('./routers/index');
app.get('/', (req, res) => res.send('App is working'));

// app.use('/', routes);
// app.use('/api/idToken', routes);

app.use('/api/index',index);
app.get('/aa', (req, res) => {
  res.send('hello')
  // res.sendFile(__dirname + '/dist/index.html')
})
app.listen(5000, () => {
    console.log("server up");
});

module.exports = {
    app
};

完整版可参考代码如下

app.js

const express=require('express');
// const bodyParser=require('body-parser');
const session = require('express-session')
var MySQLStore = require('express-mysql-session')(session);

//创建web服务器
var server=express();
var options = {
  host: '22.22.12.122',
  port: 3306,
  user: 'root',
  password: 'root',
  database: 'cake'
};
var sessionStore = new MySQLStore(options);

//引入路由模块
const cors=require('cors');
// const index=require("./routes/index");
const userRouter=require('./routers/user.js');
const cartRouter=require('./routers/cart.js');
const details=require('./routers/detail.js');
const product=require('./routers/product');
const index=require('./routers/index');
const pics=require('./routers/pics');
const login=require('./routers/login');//本接口仅供测试使用
const find=require('./routers/find');
const kind=require('./routers/kind');
const captcha=require('./routers/captcha');
const portal=require('./routers/portal');

//托管静态资源到public下；
server.use(express.static('public'));
server.use(express.static('dist'));
//跨域请求cors
server.use(cors
  (
    {
  origin:"*" ,
  // origin:"http://localhost:8080" ,
  // origin:"http://localhost:4200" ,
  // origin:"http://127.0.0.1:5500" ,
  credentials: true
}
)
);
// server.writeHead(200,{"Access-Control-Allow-Credentials":true});
server.use(express.json())
server.use(express.urlencoded({
  extended:false
}));

//session 启用会话中间件，用来保存用户登录状态以及验证码
server.use(session({
  name: 'sessionId',
  resave: true,
  saveUninitialized: true,
  secret: 'APP_SESSION_SECRET',
  store: sessionStore // 将会话存到数据库
}))

server.use('/api/user',userRouter);
server.use('/api/cart',cartRouter);

server.use('/api/product',product);
server.use('/api/details',details);
server.use('/api/index',index);
server.use('/api/pics',pics);
// server.use('/api/login',login);本接口仅供测试使用
server.use('/api/find',find);
server.use('/api/kind',kind);
server.use('/api/captcha',captcha);
server.use('/api/portal',portal);

// server.get('*', (req, res) => {
//   res.sendFile(__dirname + '/dist/index.html')
// })
// server.get('/aa', (req, res) => {
//   res.send('hello')
//   // res.sendFile(__dirname + '/dist/index.html')
// })
// 异常处理器
server.use((req,res,next,err)=>{
  console.log(err.message)
  res.sendStatus(500);
})

server.listen(3006, () => {
  console.log("server up");
});

pool.js

const mysql=require('mysql');
//创建连接池对象
// var pool=mysql.createPool({
//     host:'localhost',
//     port:'3306',
//     user:'root',
//     password:'',
//     database:'cake',
//     connectionLimit:20
// });
var pool=mysql.createPool({
    host: '22.222.12.122',
  port: 3306,
  user: 'root',
  password: 'root',
    database:'cake',
    connectionLimit:20
});
//到处连接池对象
module.exports=pool;

路由文件举例如下：

./routers/index

const express = require("express");
const router = express.Router();
const pool = require("../pool");

//一次查询返回4条数据
router.get("/", (req, res) => {
  var status = req.query.status;
  var output = {
    product: {}
  }
  if (status !== undefined) {
    var sql1 = `select * from cake_index_product where index_status=?`;
    pool.query(sql1, [status], (err, result) => {
      if (err) console.log(err);
      output.product = result;
      // console.log(output);
      // console.log("haha1");
          res.send(output);
      })

  }else{
    res.send(output);
    console.log(444)
  }
})

//一次查询返回多条数据
router.get("/insale", (req, res) => {
  var status = req.query.insale;
  var output = {
    product: {}
  }
  if (status !== undefined) {
    var sql1 = `select * from cake_index_product where index_sale_new=?`;
    pool.query(sql1, [status], (err, result) => {
      if (err) console.log(err);
      output.product = result;
          res.send(output);
      })

  }else{
    res.send(output);
    // console.log(444)
  }
})
//首页产品一次性展示+轮播图查询
router.get("/all", (req, res) => {
  var output = {
    carouselItems:{},
    product: {},
    pics:{},
    kinds:{}
  }
    var sql1 = `select * from index_img `;
    pool.query(sql1,(err, result) => {
      if (err) console.log(err);
      output.carouselItems = result;
      var sql2 = `select * from cake_index_product `;
      pool.query(sql2,(err, result) => {
      if (err) console.log(err);
      output.product = result;

      var sql3 = `select * from product_pic `;
      pool.query(sql3,(err, result) => {
      if (err) console.log(err);
      output.pics = result;

      var sql4 = `select * from product_kinds `;
      pool.query(sql4,(err, result) => {
      if (err) console.log(err);
      output.kinds = result;
          res.send(output);
      })
      })})
      })
})
// 測試接口aa
router.post("/scan/collect", (req, res) => {
  console.log('wolaila11')
  let emp_no = req.body.emp_no;
  let emp_name = req.body.emp_name;
  let card_time = req.body.card_time;
  let qrcode = req.body.qrcode;
  var output = {
    error:0,
    message:'success'
  }
  var err = {
    error:1,
    message:'參數有誤或者缺失參數'
  }

  if(emp_no&&emp_name&&card_time&&qrcode){
    res.send(output);
  }else{
    res.send(err);
  }

})
// 測試接口
//一次查询返回多条数据post
router.post("/postStatus", (req, res) => {
  console.log('wolaila')
  var status = req.body.status;
  var output = {
    product: {},
    lalala:'woshiceshi'
  }
  if (status !== undefined) {
    var sql1 = `select * from cake_index_product where index_sale_new=?`;
    pool.query(sql1, [status], (err, result) => {
      if (err) console.log(err);
      output.product = result;
          res.send(output);
      })

  }else{
    res.send(output);
    // console.log(444)
  }
})

//首页产品轮播图查询
router.get("/img", (req, res) => {
  console.log('/img')
  var output = {
    carouselItems:{}
  }
    var sql1 = `select * from index_img `;
    pool.query(sql1,(err, result) => {
      console.log('進入SQL')
      if (err) console.log(err);
      output.carouselItems = result;
          res.send(output);
      })
})
module.exports = router;