nodejs解析url参数的三种方法

• 要解析的url:http://127.0.0.1:8090/?name=cpc&age=21
• 利用js字符串操作函数进行解析

const myserver = require("http");
const urlib = require("url");
var myfs = require("fs");
myserver.createServer(function (req,res){
    console.log(req.url);
    res.write("there is a game of love"+"\n");
    var params ={};
    if (req.url.indexOf('?')!==-1)
    {
        params = req.url.split("?");
        console.log(params);
        params = params[1].split("&");
        for(var $i=0;$i<params.length;$i++)
        {
            var myitem = params[$i].split("=");
            res.write(myitem[0]+"==========="+myitem[1]+"\n");
        }
    }
    else
    {
        res.write(req.url);
    }
    res.end();
}).listen(8090);

输出结果:

• require('url')模块

const myserver = require("http");
const urlib = require("url");
myserver.createServer(function (req,res){
    var myobj = urlib.parse(req.url,true);
    var name = myobj.query.name;
    var age  = myobj.query.age;
    var name  = myobj.query.name;
    console.log(age);
    console.log(name);
    res.write("aaa");
    res.end();
}).listen(8090);

输出结果:

这里比较奇怪，最后的两个undefined其实还是分别输出name和age字段，但由于内存已经释放，所以输出了undefined

• querystring

const myserver = require("http");
const querystring = require("querystring");
var age=null;
var name  =null;
myserver.createServer(function (req,res){
    var myobj = querystring.parse(req.url.split("?")[1]);

    if (myobj)
    {
       res.write(myobj.name);
       res.write(myobj.age);
    }
    else
    {
        res.write("aaa");
    }
    res.end();
}).listen(8090);

输出结果