DatagramSocket在多线程下使用的问题

[Kasbaster]

写了一个程序，使用DatagramScoket和多线程进行基本的通信。要求服务器端能接受多个客户端的消息。部分代码如下。蓝色的一行代码会不停的创建线程，但是不在main中加死循环的话，又不能接收多个客户端的消息。不知道怎么改才能达到预期的目的。

public class NotifyServerThread extends Thread {

	protected DatagramSocket client = null;

	public NotifyServerThread(DatagramSocket c) {
		this.client = c;
	}

	public void run() {
		try {
			while (true) {
				byte[] buf = new byte[100];
				DatagramPacket dpRecv = new DatagramPacket(buf, buf.length);
				client.receive(dpRecv);

				MsgManager.getInstance().doRecvPacket(dpRecv);

				String str = "Welcome!";
				DatagramPacket dpSend = new DatagramPacket(str.getBytes(), str
						.length(), dpRecv.getAddress(), dpRecv.getPort());
				client.send(dpSend);
			}

		} catch (SocketException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			client.close();
		}
	}

	public static void main(String[] args) throws Exception {
		DatagramSocket client = new DatagramSocket(GlobalSetting.PORT);
		while (true) {
			NotifyServerThread t = new NotifyServerThread(client);
			t.start();
		}
	}
}

[Kasbaster]

不知道为什么颜色没有加上，有颜色的那一行是倒数第五行，也就是
NotifyServerThread t = new NotifyServerThread(client);

[chen09]

不清楚你想问什么？但是怎么server的程序和client的程序混在一起了？把C/S搞清楚再说吧。

以下server的程序，启动：java NotifyServer 8888

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;

public class NotifyServer implements Runnable {
final static int MAX_UDP_BUFFER_SIZE = 8192;
int port;

static public void main(String[] strs) {

new NotifyServer(Integer.parseInt(strs[0])).start();
}

public NotifyServer(int port) {
this.port = port;
}

public void start() {
new Thread(this).start();

}

public void run() {
try {
byte buffer[] = new byte[MAX_UDP_BUFFER_SIZE];
DatagramSocket socket = new DatagramSocket(port);
DatagramPacket packet = new DatagramPacket(buffer,
MAX_UDP_BUFFER_SIZE);
while (true) {

socket.receive(packet);
System.out.println(new String(packet.getData(), 0, packet
.getLength()));
}

} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

}

}


一下client的程序，启动：java NotifyClient 127.0.0.1 8888
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;

public class NotifyClient {

static public void main(String[] strs) {
try {
DatagramSocket socket = new DatagramSocket();
final String STR = "TestTest\n";
DatagramPacket packet = new DatagramPacket(STR.getBytes(), STR
.length(), InetAddress.getByName(strs[0]), Integer
.parseInt(strs[1]));
socket.send(packet);
socket.close();
} catch (SocketException e) {
e.printStackTrace();
} catch (NumberFormatException e) {
e.printStackTrace();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

}

}

server的程序在【socket.receive(packet);】处是阻塞的，要想不阻塞，用setSoTimeout函数设一个不等于0的时间，这个不用教了吧？

[Kasbaster]

有颜色那一行是NotifyServerThread t = new NotifyServerThread(client);
不知道为什么没显示颜色。

[bigbigbig1234]

想看看答案~