java udp server 服务端简易实现



public class Server {
 public static void main(String[] args) {

  try {
   DatagramSocket ds = new DatagramSocket(new InetSocketAddress(8888));

   while (true) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    byte[] buf = new byte[1024];
    DatagramPacket data = new DatagramPacket(buf, buf.length);
    ds.receive(data);
    baos.write(data.getData(), 0, data.getLength());
    System.out.println(new String(baos.toByteArray()));

    buf = baos.toByteArray();
    ds.send(new DatagramPacket(buf, buf.length, data.getSocketAddress()));

   }

  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}