express接受ajax的发送post请求

两种常用的方式:

 $.ajax({
                    type: "POST",
                    url: '/everdayPost',
                    // data: JSON.parse({cont:data}),注意: 不需要转成字符串,转成就错了
                    dataType: "json",
                    data:{a:1},
                    success: function (res) {
                        console.log(res.cont.toString());
                    })

　　

1 利用req.on("data", (data) => {data.toString()});

const express = require('express');
const serverConfig = require('./serverConfig');
const bodyParser = require('body-parser');
 
const app = express();
 
app.use('/',express.static('./page'))
 
app.use('/everdayPost',(req,resp)=>{
    req.on('data',function(data){ //利用data事件
        console.log(data.toString())
    })
    resp.send("aaa")
 
})
 
app.listen(9000,function(){
    console.log('服务已启动')
})

　　2.利用body-parser中间件

const express = require('express');
const serverConfig = require('./serverConfig');
const bodyParser = require('body-parser');
 
const app = express();
 
app.use('/',express.static('./page'))
 app.use(bodyParser.json())
 app.use(bodyParser.urlencoded({extended: false}));
 
app.use('/everdayPost',(req,resp)=>{
     console.log(req.body)//直接就能取到req.body
 
    resp.send("aaa")
 
})
 
app.listen(9000,function(){
    console.log('服务已启动')
})