代码如下：
　　/**
　　* This is a test program for Echo Server. @author Hu Dennis created at 2008-11-12
　　*/
　　import java.net.ServerSocket;
　　import java.net.Socket;
　　import java.io.BufferedReader;
　　import java.io.DataInputStream;
　　import java.io.IOException;
　　import java.io.InputStreamReader;
　　import java.io.PrintStream;
　　public class HttpServer {
　　public static void main(String[] args) {
　　int listenPort = 8080;
　　ServerSocket serverSocket = null;
　　Socket serviceSocket = null;
　　DataInputStream inBound = null;
　　PrintStream outBound = null;
　　try {
　　serverSocket = new ServerSocket(listenPort);
　　serviceSocket = serverSocket.accept();
　　inBound = new DataInputStream(serviceSocket.getInputStream());
　　outBound = new PrintStream(serviceSocket.getOutputStream());
　　BufferedReader bfReader = new BufferedReader(new InputStreamReader(inBound));
　　String line = null;
　　while (true){
　　/* The request must contains a line separator.
　　* eg.
　　* StringBuilder request = new StringBuilder();
　　* request.append("Echo\n");
　　*/
　　line = bfReader.readLine();
　　outBound.println(line);
　　}
　　}catch (IOException e){
　　System.out.println(e);
　　return ;
　　}
　　}
　　} 　
　

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