Get the data of get and post requests in Express

Get the data requested by get

An API is built into Express, which can be accessed directly request.query.

// 在express中可以直接通过 request.query 来获取字符串参数
// http://127.0.0.1:4000/about?name=zhangsan&message=hello
app.get('/about',function (request,response) {
    
    
  console.log(request.query);
  response.send('关于我');
})

Returned data format:{ name: 'zhangsan', message: 'hello' }

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Get the data requested by the post

There is no built-in API for obtaining the post request body in Express, we need to use the third-party plug-in body-parser

installation npm install body-parser

Configuration body-parser

• Configuration code below, will be in the request on the request object will be out of a multi-attribute: body
• We can directly through request.bodyto get the data in the form POST request body

app.use(bodyParser.urlencoded({
    
     extended: false }))
app.use(bodyParser.json())

use

var express = require('express')
var bodyParser = require('body-parser')

var app = express()

app.use(bodyParser.urlencoded({
    
     extended: false }))
app.use(bodyParser.json())

app.post('/about',function (request,response) {
    
    
  console.log(request.body);
})

---

Reference

Express middleware body-parser

Further reading https://blog.csdn.net/weixin_43974265/category_10692693.html