02-Response简单响应报文

package com.day5;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Date;

public class Server {

    /**刘诗华　Response响应
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {

        //设置换行符
        String CRLF = "\r\n";
        //申请注册8080套接字
        ServerSocket server=new ServerSocket(8080);

        System.out.println("开始接受请求...");
        //接受客户端请求
        Socket socket = server.accept();
        //获取客户端对象输出流对象
        OutputStream out = socket.getOutputStream();
        //将字节输出流转换成字符输出流
        OutputStreamWriter writer = new OutputStreamWriter(out);
        //将字符输出流转换成缓冲字符流
        BufferedWriter bw = new BufferedWriter(writer);

        StringBuilder response=new StringBuilder();

        //响应报文主体内容
        String html="<h1>Hello my name is liu shi hua</h1>";

        //设置响应头信息
        response.append("HTTP/1.1 200 OK").append(CRLF);
        response.append("Server:Apache/2.4.10 (Win32) PHP/5.3.28").append(CRLF);
        response.append("Date:").append(new Date()).append(CRLF);
        response.append("Content-Type:text/html").append(CRLF);
        response.append("Content-Length: "+html.getBytes().length).append(CRLF);
        response.append(CRLF);
        response.append(html);

        //发送数据到客户端
        bw.write(response.toString());

        //关闭资源流
        bw.close();
        socket.close();
        server.close();

        System.out.println(response);

    }

}

响应报文格式

HTTP/1.1 200 OK
Server:Apache/2.4.10 (Win32) PHP/5.3.28
Date:Fri, 06 Jul 2018 14:52:32 GMT
Content-Type:text/html
Content-Length: 17

<h1>Hello</h1>