2018-12-07

const http=require('http');
const fs=require('fs');
//querystring：post:uname=jack&upwd=123
const queryString=require('querystring');
//url:get: http://www.baidu.com/index?uname=jack&upwd=123
const urlLib=requier('url');
var server=http.createServer(function(req,res){
var file_name='./www'+req.url;
//写文件：
fs.writeFile('文件名','内容'，function(err){
if(err){
res.write('404');
}
})
//读文件
fs.readFile('文件名',function(err,data){
if(err){
res.write('404');
}else{
res.write(data);
}
})
res.write('fggfggb');

var url=req.url;// /?uname=jack&upwd=123
queryString.parse('una')//var uname=jack&upwd=123

var result=urlLib.parse('http://www.baidu.com/index?uname=jack&upwd=123',true);
console.log(result.query);//uname=jack&upwd=123
console.log(result.pathname); //?index

});
server.listen(8080);

1. 
   // 下载：npm install express
   const express=requie('express');
   2.
   // cnpm install express-static
   const expressStatic=require('express-static');
   5.
   const bodyParser=require('body-parser');
   //cookie-parser
   const cookieParser=require('cookie-prase');
   //cookie-session
   const cookieSession=require('cookie-session');
   var server=express();
   server.use(bodyParser.urlencoded());
   server.use(cookieParser())
   server.use(cookieSession({
   keys:['asads','fvgfd','dfgfdg'];
   }))
   3.
   server.use('/1,html',function(req,res){
   res.send('fdfdfdb');
   res.end();
   4.
   console.log(req.query);
   5.
   console.log(req.body);
   })
   6.
   server.use('/',function(req,res,next){
   console.log('a');
   next();
   });
   server.use('/',function(req,res){
   console.log('b');
   })
   
   server.use('/',function(req,res){
   res.cookie('user','jack')
   })
   
   server.use('/',function(req,res){
   console.log(req.cookies);
   res.send('200');
   })
   
   server.use('/',function(req,res){
   res.secret='fdbgdfdfbfdgf';
   res.cookie('user','jack',{signed:true})
   res.send('200');
   });
   //session
   server.use('/',function(req,res){
   console.log(req.session)
   })
   server.listen(8080);
   server.use(expressStatic('./www'))