UDP通信 Java

public class UdpServerTest {

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

        final DatagramSocket server = new DatagramSocket(41017);
        new Thread(new Runnable() {

            @Override
            public void run() {

                try {
                    int port = 41216;
                    InetAddress addr = InetAddress.getByName("10.1.31.156");
                    int i = 1;
                    while (true) {
                        // TODO Auto-generated method stub
                        String sendStr = "Hello ! I'm Server";
                        sendStr = sendStr + " " + i;
                        byte[] sendBuf;
                        sendBuf = sendStr.getBytes();
                        DatagramPacket sendPacket = new DatagramPacket(sendBuf,
                                sendBuf.length, addr, port);
                        server.send(sendPacket);
                        i++;
                        Thread.sleep(1000);
                    }
                }
                catch (SocketException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (UnknownHostException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }).start();

        new Thread(new Runnable() {

            @Override
            public void run() {

                // TODO Auto-generated method stub
                try {
                    byte[] recvBuf = new byte[1000];
                    DatagramPacket recvPacket = new DatagramPacket(recvBuf,
                            recvBuf.length);
                    while (true) {
                        server.receive(recvPacket);
                        String recvStr = new String(recvPacket.getData(), 0,
                                recvPacket.getLength());
                        System.out.println("收到:" + recvStr);
                        Thread.sleep(1000);
                    }
                }
                catch (SocketException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }).start();
    }
}

public class UdpClientTest {

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

        final DatagramSocket client = new DatagramSocket(41216);
        // TODO Auto-generated method stub
        new Thread(new Runnable() {

            @Override
            public void run() {

                try {
                    int port = 41017;
                    InetAddress addr = InetAddress.getByName("10.1.31.156");
                    int i = 1;
                    while (true) {
                        // TODO Auto-generated method stub
                        String sendStr = "Hello ! I'm Client";
                        sendStr = sendStr + " " + i;
                        byte[] sendBuf;
                        sendBuf = sendStr.getBytes();
                        DatagramPacket sendPacket = new DatagramPacket(sendBuf,
                                sendBuf.length, addr, port);
                        client.send(sendPacket);
                        i++;
                        Thread.sleep(1000);
                    }
                }
                catch (SocketException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (UnknownHostException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }).start();

        new Thread(new Runnable() {

            @Override
            public void run() {

                // TODO Auto-generated method stub
                try {
                    byte[] recvBuf = new byte[1000];
                    DatagramPacket recvPacket = new DatagramPacket(recvBuf,
                            recvBuf.length);
                    while (true) {
                        client.receive(recvPacket);
                        String recvStr = new String(recvPacket.getData(), 0,
                                recvPacket.getLength());
                        System.out.println("收到:" + recvStr);
                        Thread.sleep(1000);
                    }
                }
                catch (SocketException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }).start();

    }
}