(精华)2020年7月6日 Node.js express(手写版)

//myexpress.js
const http = require('http');
const url = require('url');
let routers = [];
class Application {
    get(path, hander) {
        routers.push({
            path,
            method: 'get',
            hander
        });
    }
    listen2() {
        const server = http.createServer(function (req, res) {
            const {
                pathname
            } = url.parse(req.url, true);

            var tet = routers.find(v => {
                return v.path == pathname && req.method.toLowerCase() == v.method
            })

            tet && tet.hander(req, res);

        })
        //在Application原型上添加listen方法匹配路径， 执行对应的hander
        server.listen(...arguments)
        //  server.listen(aa,fn)
    }
}
module.exports = function () {
    return new Application();
}

  

 

  
1
  
2
  
3
  
4
  
5
  
6
  
7
  
8
  
9
  
10
  
11
  
12
  
13
  
14
  
15
  
16
  
17
  
18
  
19
  
20
  
21
  
22
  
23
  
24
  
25
  
26
  
27
  
28
  
29
  
30
  
31
  
32
  
33
 

const express = require('./myexpress.js');

const app = express();
app.get('/',(req,res) => {
    res.end('Hello world')
})
app.get('/users',(req,res) => {
    res.end(JSON.stringify({name:'abcooooo'}))
})
app.get('/list',(req,res) => {
    res.end(JSON.stringify({name:'list'}))
})
app.listen2(3200 , () => {
    console.log('Example listen at 3200')
})

  

 

  
1
  
2
  
3
  
4
  
5
  
6
  
7
  
8
  
9
  
10
  
11
  
12
  
13
  
14
  
15
 

文章来源: codeboy.blog.csdn.net，作者：愚公搬代码，版权归原作者所有，如需转载，请联系作者。

原文链接：codeboy.blog.csdn.net/article/details/107168914