java怎么实现组播

本篇内容主要讲解“java怎么实现组播”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“java怎么实现组播”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{
        //组播地址
        InetAddress group = InetAddress.getByName("224.0.0.1");
        int port = 8888;
        //创建组播套接字
        MulticastSocket msr = null;
        try {
            msr = new MulticastSocket(port);
            //加入连接
            msr.joinGroup(group);
            byte[] buffer = new byte[8192];
            System.out.println("接收数据包启动！(启动时间: "+new Date()+")");
            while(true){
                //建立一个指定缓冲区大小的数据包
                DatagramPacket dp = new DatagramPacket(buffer, buffer.length);
                msr.receive(dp);
                String s = new String(dp.getData(),0,dp.getLength());
                //解码组播数据包
                System.out.println(s);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(msr!=null){
                try {
                    msr.leaveGroup(group);
                    msr.close();
                } catch (Exception e2) {
                }
            }
        }
    }
}

发送端：

public class MulticastSender {
    public static void server() throws Exception{
        InetAddress group = InetAddress.getByName("224.0.0.1");//组播地址
        int port = 8888;
        MulticastSocket mss = null;
        try {
            mss = new MulticastSocket(port);
            mss.joinGroup(group);
            System.out.println("发送数据包启动！（启动时间"+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("发送数据包给 "+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，相信大家对“java怎么实现组播”有了更深的了解，不妨来实际操作一番吧！这里是亿速云网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！