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();
    }

}