nodejs学习整理（四）

3.HTTP模块

1.HTTP协议

(1)通用头信息

(2)响应头信息

(3)请求头信息

(4)请求主体

2.http模块

（1）模拟客户端浏览器

http.get(url,callback);callback参数中的res为服务器端相应的对象

res.on(‘data’,(buf)=>{});使用data时间获取数据

const http=require('http');
http.get('http://www.baidu.com/',(res)=>{
	console.log(res.statusCode);
	res.on('data',(buf)=>{
		console.log(buf.toString());
	});
});
           

（2）创建web服务器

var server=createrServer();

server.listen();

server.on(‘request’,(req,res)=>{});

req.url/method/headers

res.write()/writeHead(302,{});/end();

const http=require('http');
var server=http.createServer();
server.listen(3000,()=>{
	console.log('success');
});

server.on('request',(req,res)=>{
	console.log('youyigeqingqiu');
    console.log(req.url);
	console.log(req.method);
	console.log(req.headers);

	res.writeHead(302,{
		Location:'http://www.baidu.com',
			'Content-Type':'text/html;charset=utf8'
	});
	res.end();
});
           

var server=http.createServer();
server.listen(3000);
server.on('request',(req,res)=>{
	var url=req.url;
	switch(url)
	{
		case '/login':res.write(please login');break;
		case '/student':res.writeHead(302,{
			Location:'http://www.codeboy.com'
		});break;
		case '/':res.writeHead(302,{
			Location:'http://127.0.0.1:3000/login'
		});break;
		default :res.write('404 NOT FOUND');
	}
	res.end();
});