node环境下多种方式“get数据解析”

1、自己写

const http = require('http');
 
http.createServer(function(req,res){
    var get = {};
    if(req.url.indexOf('?')!=-1){
        var arr = req.url.split('?');
        var url = arr[0];
        var arr2 = arr[1].split('&');
        for(var i=0;i<arr2.length;i++){
            var arr3 = arr2[i].split('=');
            get[arr3[0]]=arr3[1];
        }
    }else{
        var url = req.url;
    }
    console.log(url,get);
    res.write('aaa');
    res.end();
}).listen(8080);

2、引入querystring模块

const http = require('http');
const querystring = require('querystring');
http.createServer(function(req,res){
    var get = {};
    if(req.url.indexOf('?')!=-1){
        var arr = req.url.split('?');
        var url = arr[0];
        get = querystring.parse(arr[1]);
    }else{
        var url = req.url;
    }
    console.log(url,get);
    res.write('aaa');
    res.end();
}).listen(8080);

3、引入url模块

const http = require('http');
const urlli = require('url');
 
http.createServer(function(req,res){
    var obj = urlli.parse(req.url,true); //true解析，如果没有true，默认不解析
    var url = obj.pathname;
    var get = obj.query;
    console.log(url,get);
    res.write('aaa');
    res.end();
}).listen(8080);

提交表单的HTML代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
    <form action="http://localhost:8080/aaa" method="get">
        用户：<input type="text" name="user" value=''><br>
        密码：<input type="password" name="pass" value=''><br>
        <input type="submit" value="提交">
    </form>
</body>
</html>

个人练习如下：

const http = require("http");
const queryString = require("querystring");
const urlNode = require('url');

http.createServer((req,res)=>{
    console.log(req.url);   // /aaa?user=123&pass=456
    var get = {};
    var url = '';
    if(req.url.indexOf('?') != -1){

        //方法一：切割字符串
        // var _arr  = req.url.split('?'); //['aaa','user=123&pass=456']
        // url = _arr[0];  //'aaa'
        // var _arr2 = _arr[1].split('&'); //['user=123','pass=456']
        // _arr2.map((v,k,arr)=>{
        //     var key = v.split('=')[0];
        //     var value = v.split('=')[1];
        //     get[key] = value;
        // })

        //方法二：正则表达式
        // var query = req.url.substr(req.url.indexOf('?')+1);
        // var regAll = new RegExp("([^?&=]+)=([^?&=]*)", "gi");
        // var regSingle = new RegExp("([^?&=]+)=([^?&=]*)", "i");
        // var arrAll = query.match(regAll);     //["user=123", "pass=456"]
        // arrAll.map(function(v,k,arr){
        //     var resultArr = v.match(regSingle);
        //     get[resultArr[1]] = resultArr[2];
        // })
        //方法三：引入querystring模块
        // const arr =  req.url.split('?');
        // url = arr[0];
        // get = queryString.parse(arr[1]);
        //方法四：
        // const obj = urlNode.parse(req.url,true);
        // url = obj.pathname;
        // get = obj.query;

    }else{
        url = req.url;
    }
    console.log(url,get);
    res.write('123456')
    res.end('12')
}).listen(8000)

以上都是原生node实现：

下面的是express中 req.query 就可以方便的取到 { id 123456}

app.get('/article',(req,res)=>{
    console.log(req.query)
    
})

原文链接：https://blog.csdn.net/alberqing_/article/details/81452487