NodeJs实战第三章之简单实现增删改查接口

具体demo如下：

const express = require('express');
const bodyParser = require("body-parser")
const app = express();
const articles = [{title:'这是一篇文章'}]
const port = process.env.PORT || 3000;

app.use(bodyParser.json());   //支持编码为JSON的请求消息体
app.use(bodyParser.urlencoded({extended:true}))  //支持编码为表单的请求消息体

 app.get('/',(req,res)=>{
   res.send('Hello World!!!')
 })
 app.get('/articles',(req,res,next)=>{
   res.send(articles)
 })

app.post('/articles',(req,res,next)=>{
  const article = {title:req.body.title};
  articles.push(article);
  res.send(article)
})

app.get('/articles/:id',(req,res,next)=>{
  const id = req.params.id;
  console.log("Fetching:",id);
  res.send(articles[id]);
})

app.delete('/articles/:id',(req,res,next)=>{
  const id = req.params.id;
  console.log("Deleting:",id)
  delete articles[id];
  resw.send({message:"Deleted"})
})
 app.listen(port,()=>{
   console.log('Express web app available at localhost:'+port)
 })

 module.exports = app;

用postman调接口，成功!

注意: post逻辑实现要依赖body-parser插件解析请求体