使用DataGramSocket实现两人聊天

朴灿烈づ我的快乐病毒、 2022-11-30 04:14 100阅读 0赞

## 发送端 ##

public class Send {
        public static void main(String[] args) throws Exception{
            DatagramSocket ds = new DatagramSocket();
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            InetAddress address = InetAddress.getByName("127.0.0.1");
            int port = 9999;
            new Thread(() -> {
                while(true) {
                    try {
                        String str = br.readLine();
                        byte[] b = str.getBytes();
                        int length = b.length;
                        DatagramPacket dp = new DatagramPacket(b,length,address,port);
                        ds.send(dp);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }).start();
    
            DatagramSocket ds_recieve = new DatagramSocket(8888);
    
            new Thread(() -> {
                while (true) {
                    try {
                        byte[] b = new byte[1024];
                        int len = b.length;
                        DatagramPacket dp = new DatagramPacket(b,len);
                        ds_recieve.receive(dp);
                        InetAddress ip = dp.getAddress();
                        byte[] data = dp.getData();
                        int length = dp.getLength();
                        System.out.println(ip + ": " + new java.lang.String(data,0,length));
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
    }

## 接收端 ##

public class Recieve {
        public static void main(String[] args) throws Exception{
            DatagramSocket ds_recieve = new DatagramSocket(9999);
    
            new Thread(() -> {
                while (true) {
                    try {
                        byte[] b = new byte[1024];
                        int len = b.length;
                        DatagramPacket dp = new DatagramPacket(b,len);
                        ds_recieve.receive(dp);
                        InetAddress ip = dp.getAddress();
                        byte[] data = dp.getData();
                        int length = dp.getLength();
                        System.out.println(ip + ": " + new java.lang.String(data,0,length));
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }).start();
            DatagramSocket ds = new DatagramSocket();
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            InetAddress address = InetAddress.getByName("127.0.0.1");
            int port = 8888;
            new Thread(() -> {
                while(true) {
                    try {
                        String str = br.readLine();
                        byte[] b = str.getBytes();
                        int length = b.length;
                        DatagramPacket dp = new DatagramPacket(b,length,address,port);
                        ds.send(dp);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }).start();
        }
    }