Java网络编程(TCP协议-服务端和客户端交互)

客户端：

 package WebProgramingDemo;

 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.net.Socket;
 import java.net.UnknownHostException;

 public class SocketDemo {

     /**
      * @param args
      * @throws IOException
      * @throws UnknownHostException
      */
     public static void main(String[] args) throws  IOException {

         Socket s=new Socket("192.168.2.103",10002);
         OutputStream out=s.getOutputStream();
         out.write("Java".getBytes());
         InputStream is=s.getInputStream();
         byte buf[]=new byte[1024];
         int len=is.read(buf);
         System.out.println(new String(buf,0,len));
         s.close();
     }

 }

服务端：

 package WebProgramingDemo;

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

 public class ServerSocketDemo {

     /**
      * @param args
      * @throws IOException
      */
     public static void main(String[] args) throws IOException {

         ServerSocket ss = new ServerSocket(10002);
         Socket s = ss.accept();
         String ip = s.getInetAddress().getHostAddress();
         System.out.println(ip + "....connected....");
         InputStream in = s.getInputStream();
         int len = 0;
         byte[] buf = new byte[1024];
         len = in.read(buf);
         System.out.println(new String(buf, 0, len));
         OutputStream os=s.getOutputStream();
         os.write("收到".getBytes());
         os.close();
         s.close();
         ss.close();
     }

 }