简易web服务器_简易 web 服务器 开发一个简易的 web 服务器,它仅能处理一个请求。这个请求可以是

1、代码如下

package com.httpserver.server;

import java.io.*;
import java.net.Socket;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class ServerThread implements Runnable {

    private static Map<String,String> contentMap = new HashMap<>();

    static {
        contentMap.put("html","text/html;charset=utf-8");
        contentMap.put("jpg","image/jpeg");
    }

    private Socket client;
    private InputStream ins;
    private OutputStream out;

    private PrintWriter pw;
    private BufferedReader br;

    public ServerThread(Socket client){
        this.client = client;
        init();
    }
    private void init(){
        try {
            ins = client.getInputStream();
            out = client.getOutputStream();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void run() {
        try {
            go();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static final String webroot = "e:\\webroot\\";


    private void go() throws IOException {
        //读取去请求内容
        BufferedReader reader = new BufferedReader(new InputStreamReader(ins));
        String line = reader.readLine().split(" ")[1].replace("/","\\"); //请求的资源
        System.out.println(line);
        if(line.equals("\\")){
            line += "index.html";
        }

        //给用户响应
        PrintWriter pw = new PrintWriter(out);

        //文件在e:\webroot\index.html下
        InputStream i = new FileInputStream(webroot + line);
//        BufferedReader fr = new BufferedReader(new InputStreamReader(i));

        pw.println("HTTP/1.1 200 OK");
        String s = line.substring(line.lastIndexOf(".")+1,line.length());
        System.out.println(s);
        pw.println("Content-Type: "+contentMap.get(s));
        pw.println("Content-Length: " +i.available());
        pw.println("Server: Hello" );
        pw.println("Data:" + new Date());
        pw.println();
        pw.flush();
        byte[] buff = new byte[1024];
        int leg = 0;
        while ((leg = i.read(buff)) != -1){
            out.write(buff,0,leg);
        }
        pw.flush();

        i.close();
        pw.close();
        reader.close();

        client.close();
    }
}

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2、测试代码

package com.httpserver.server;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class HttpServer3 {

    public static void main(String[] args) throws IOException {

        ExecutorService pool = Executors.newCachedThreadPool();

        //启动服务器，监听8888端口
                ServerSocket server = new ServerSocket(8888);
        System.out.println("服务器启动，监听" + 8888 + "端口。");

        while (!Thread.interrupted()){
            //不接收接收客户端请求
           Socket client = server.accept();
            pool.execute(new ServerThread(client));
        }
        server.close();
    }
}

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3、文件目录结构

（1）index.html的文件内容如下：

（2）login.html的文件内容如下：