UDP多线程操作

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原创最新推荐文章于 2026-03-20 14:05:47 发布 671 阅读 AI 写同款· GEO 优化 ›

Qt网络通信，多线程实现UDP通信 Qt使用多线程进行UDP通信 UDP 由于要使用套接字，所以需要在服务器和客户端的工程文件中都添加QT += core gui network 使用writeDatagram方法传输数据，readDatagram方法接收数据。QT在调用writeDatagram方法时候会自动发出readyRead信号给接收方监听。 多线程 Qt有两种多线程的方法，其中一种是继承QThread的run函数，另外一种是把一个继承于QObject的类转移到一个Thread里，即使用MoveToThread。　　阅读详情

public class TestUDP {

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		DatagramSocket send = new DatagramSocket();
		Send s = new Send(send);
		DatagramSocket rece = new DatagramSocket(10001);
		Receive r = new Receive(rece);
		new Thread(s).start();
		new Thread(r).start();
	}

}
public class Send implements Runnable {
	private DatagramSocket ds;

	Send(DatagramSocket ds) {
		this.ds = ds;
	}

	@Override
	public void run() {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = null;
		try {
			while ((line = br.readLine()) != null) {
				byte[] bys = line.getBytes();
				InetAddress in = InetAddress.getLocalHost();
				DatagramPacket dp = new DatagramPacket(bys, bys.length, in,
						10001);
				ds.send(dp);
				if(line.equalsIgnoreCase("over"))
					break;
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}
public class Receive implements Runnable {
	private DatagramSocket ds;

	Receive(DatagramSocket ds) {
		this.ds = ds;
	}

	@Override
	public void run() {
		byte[] bys = new byte[1024];
		DatagramPacket dp = new DatagramPacket(bys, bys.length);
		try {
			while (true) {
				ds.receive(dp);
				String data=new String(dp.getData(),0,dp.getLength());
				System.out.println(dp.getAddress().getHostAddress()+":"+data);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

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