java socket实现http请求

应用逻辑层：

import java.net.*;

import java.io.*;

public class MyStreamSocket extends Socket {

   private Socket  socket;

   private BufferedReader input;

   private PrintWriter output;

   MyStreamSocket(String acceptorHost,

                  int acceptorPort ) throws SocketException,

                                   IOException{

      socket = new Socket(acceptorHost, acceptorPort );

      setStreams( );

   }

   MyStreamSocket(Socket socket)  throws IOException {

      this.socket = socket;

      setStreams( );

   }

   private void setStreams( ) throws IOException{

      // get an input stream for reading from the data socket

      InputStream inStream = socket.getInputStream();

      input = 

         new BufferedReader(new InputStreamReader(inStream));

      OutputStream outStream = socket.getOutputStream();

      // create a PrinterWriter object for character-mode output

      output = 

         new PrintWriter(new OutputStreamWriter(outStream));

   }

   public void sendMessage(String message)

             throws IOException {

      output.println(message);   

      //The ensuing flush method call is necessary for the data to

      // be written to the socket data stream before the

      // socket is closed.

      output.flush();               

   } // end sendMessage

   public String receiveMessage( )

throws IOException {

      // read a line from the data stream

      String message = input.readLine( );  

      return message;

   } //end receiveMessage

   public void close( )

throws IOException {

      socket.close( );

   }

} //end class

//界面层？

public class HTTPClient {

/**

 * @param args

 */

public static void main(String[] args) {

// TODO Auto-generated method stub

try {

String host = "www.baidu.com"/*args[0]*/;

int port = 80/*Integer.parseInt(args[1])*/;

String fileName = "/index.html"/*args[2].trim()*/;

String request = "GET " + fileName +" HTTP/1.0\r\n";//Http请求行。具体百度谷歌之。

MyStreamSocket mySocket = new MyStreamSocket(host,port);

//System.out.println("connection made!");

mySocket.sendMessage(request);

String response;

response = mySocket.receiveMessage();

while (response != null) {

System.out.println(response);//打印服务器响应信息。包括状态行。头部内容。空行。web对象内容。

response = mySocket.receiveMessage(); 

}

} catch (Exception e) {

// TODO: handle exception

}

}

}

//运行后的响应信息