利用Java Socket編寫一個簡單的Web伺服器，具體如下：

（1）、使用 ServerSocket 監聽某一埠，然後等待連接獲取 Socket物件；

（2）、建立一個類 HttpServer 繼承 java.lang.Thread 類，重寫 run()方法，執行瀏覽器請求；

（3）、獲得瀏覽器請求，解析資原始檔路徑；

（4）、讀取資原始檔，響應給瀏覽器；

（5）、瀏覽器位址列輸入：http://localhost:8000/index.html；

原始碼

package com;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class webserver {
    public static void main(String[] args) {
        try {
            ServerSocket serverSocket = new ServerSocket(8000);
            while(true){
                //伺服器套接字
                Socket socket = serverSocket.accept();
                new HttpServer(socket).start(); {
                };
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


}
 

package com;

import java.io.*;
import java.net.Socket;

public class HttpServer extends Thread {
    private Socket socket;
    public HttpServer(Socket socket) {
        this.socket=socket;
    }

    @Override
    public void run() {
        super.run();
        String filePath = "/index.html";
        File file=new File(System.getProperty("user.dir")+filePath);
        try {
            BufferedReader reader = new BufferedReader(new FileReader(file));
            System.out.println("reader  ：" + reader);
            StringBuffer sb = new StringBuffer();
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line).append("\r\n");
            }
            StringBuffer result = new StringBuffer();
            result.append("HTTP /1.1 200 ok \r\n");
            result.append("Content-Type:text/html \r\n");
            result.append("Content-Length:" + file.length() + "\r\n");
            result.append("\r\n" + sb.toString());
            OutputStream out=socket.getOutputStream();
            out.write(result.toString().getBytes());
            System.out.println(result.toString());
            out.flush();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}