• 引入的模块

var http = require('http');

var url = require('url');

var fs = require('fs');

//解析url用的模块
var querystring = require('querystring');

var server = http.createServer();

//返回当前文件的路径
var HtmlDir = __dirname + '/html/';

F14563B0-BB97-4232-9495-2E6B200C41B4.png

• 处理请求

server.on('request',function(req,res){

    var  urlStr = url.parse(req.url);
    switch (urlStr.pathname)
    {
        case '/':
            //首页
            sendData(HtmlDir+"index.html",req,res);

            break;
        case '/user':
            sendData(HtmlDir+"user.html",req,res);
            break;
        case '/login':
            sendData(HtmlDir+"login.html",req,res);
            break;
        case '/login/check':
            sendData(HtmlDir+"login.html",req,res);

            if(req.method.toUpperCase() == 'POST')
            {
                var  str = '';
               req.on('data',function(chunk){
                  str +=chunk;
               });
              req.on('end',function(){

                  console.log(str);
               //username=%E5%95%A5%E6%89%93%E7%AE%97&password=123
                  console.log(querystring.parse(str));
                  //{ username: '啥打算', password: '123' }
               });

            }else
            {
                console.log(urlStr.query);//query:
                // 'username=%E5%95%A5%E6%89%93%E7%AE%97&password=1223',
                console.log(querystring.parse(urlStr.query));
                //{ username: '啥打算', password: '1223' }
            }

            break;
        default :
            sendData(HtmlDir+"err.html",req,res);
            break;

    }
});

function sendData(file,req,res)
{
    fs.readFile(file,function(err,data){
        if(err){
            res.writeHead(404,{
                'content-type':'text/html;charset=utf-8'
            });
            console.log(data);
            res.end('<h1>页面被吃带哦了</h1>');
        }else{
            res.writeHead(200,{
                'content-type':'text/html;charset=utf-8'
            });
          res.end(data);
        }
    });
}
server.listen('8081','localhost');