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  • udp群聊

    package cn.charp3;
    
    import java.net.DatagramSocket;
    import java.net.SocketException;
    
    public class charDemo {
    
        public static void main(String[] args) throws Exception {
            DatagramSocket send=new DatagramSocket();
            DatagramSocket rece=new DatagramSocket(10001);    
            new Thread(new Send(send)).start();
            new Thread(new Rece(rece)).start();
            
    
        }
    
    }
    package cn.charp3;
    
    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.net.DatagramPacket;
    import java.net.DatagramSocket;
    import java.net.InetAddress;
    
    public class Send implements Runnable {
        private DatagramSocket ds;
        public Send(DatagramSocket ds)
        {
            this.ds=ds;
        }
        @Override
        public void run() {
            try {
                
                BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in));
                String line=null;
                while((line=bufr.readLine())!=null)
                {
                    byte[] buf=line.getBytes();
                    DatagramPacket dp=new DatagramPacket(buf,buf.length,InetAddress.getByName("192.168.0.255"), 10001);
                    ds.send(dp);
                }                
            } catch (Exception e) {
                // TODO: handle exception
            }
    
        }    
    }
    package cn.charp3;
    
    import java.net.DatagramPacket;
    import java.net.DatagramSocket;
    
    
    public class Rece implements Runnable {
        private DatagramSocket ds;
        public Rece(DatagramSocket ds)
        {
            this.ds=ds;
        }
        @Override
        public void run() {
            
            try{
            while(true)
            {
                byte[] buf=new byte[1024];
                DatagramPacket dp=new DatagramPacket(buf,buf.length);
                ds.receive(dp);
                String ip=dp.getAddress().getHostAddress();
                int port=dp.getPort();
                String text=new String(dp.getData(),0,dp.getLength());
                System.out.println(ip+""+port+""+text);
                if(text.equals("886")){
                    System.out.println(ip+"退出了");
                }
            }
            }catch(Exception e)
            {
                
            }
        }
    
    }
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  • 原文地址:https://www.cnblogs.com/kedoudejingshen/p/2779158.html
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