java怎么實現組播

本篇內容主要講解“java怎么實現組播”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“java怎么實現組播”吧!

MulticastSocket multicastSocket;@FXMLButton btnmuticast,btnmuticaststop;public void btnmuticastOnMouseClicked(MouseEvent event)
{try {multicastSocket = new MulticastSocket(3001);        multicastSocket.setInterface(InetAddress.getByName("192.168.1.101"));        InetAddress multiaddr = InetAddress.getByName("224.26.83.1");        multicastSocket.joinGroup(multiaddr);        multicastSocket.setTimeToLive(4);        byte[] buff = "QQ".getBytes();        DatagramPacket datagramPacket = new DatagramPacket(buff,buff.length,multiaddr,3001);        multicastSocket.send(datagramPacket);        logger.info("btnmuticastOnMouseClicked");    } catch (IOException e) {
        e.printStackTrace();    }

}public void bbtnmuticaststopOnMouseClicked(MouseEvent event)
{if((multicastSocket!= null) && (multicastSocket.isConnected()))
    {logger.info("bbtnmuticaststopOnMouseClicked");        multicastSocket.close();    }


}

接收端：

public class MulticastReceive {
    public static void main(String[] args) throws Exception {
        listener();
    }

    public static void listener() throws Exception{
        //組播地址
        InetAddress group = InetAddress.getByName("224.0.0.1");
        int port = 8888;
        //創建組播套接字
        MulticastSocket msr = null;
        try {
            msr = new MulticastSocket(port);
            //加入連接
            msr.joinGroup(group);
            byte[] buffer = new byte[8192];
            System.out.println("接收數據包啟動！(啟動時間: "+new Date()+")");
            while(true){
                //建立一個指定緩沖區大小的數據包
                DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
                msr.receive(dp);
                String s = new String(dp.getData(),0,dp.getLength());
                //解碼組播數據包
                System.out.println(s);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(msr!=null){
                try {
                    msr.leaveGroup(group);
                    msr.close();
                } catch (Exception e2) {
                }
            }
        }
    }
}

發送端：

public class MulticastSender {
    public static void server() throws Exception{
        InetAddress group = InetAddress.getByName("224.0.0.1");//組播地址
        int port = 8888;
        MulticastSocket mss = null;
        try {
            mss = new MulticastSocket(port);
            mss.joinGroup(group);
            System.out.println("發送數據包啟動！（啟動時間"+new Date()+")");

            while(true){
                String message = "Hello "+new Date();
                byte[] buffer = message.getBytes();
                DatagramPacket dp = new DatagramPacket(buffer, buffer.length,group,port);
                mss.send(dp);
                System.out.println("發送數據包給 "+group+":"+port);
                TimeUnit.SECONDS.sleep(1);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            try {
                if(mss!=null){
                    mss.leaveGroup(group);
                    mss.close();
                }
            } catch (Exception e2) {
            }
        }
    }

    public static void main(String[] args) throws Exception {
        server();
    }
}

到此，相信大家對“java怎么實現組播”有了更深的了解，不妨來實際操作一番吧！這里是億速云網站，更多相關內容可以進入相關頻道進行查詢，關注我們，繼續學習！