java udp协议源码_JAVA使用UDP协议的两人聊天室源码

以下是一个简单的Java UDP协议的两人聊天室源码，可以作为参考：

import java.net.*;

public class UDPServer {
    public static void main(String args[]) throws Exception {
        DatagramSocket serverSocket = new DatagramSocket(9876);
        byte[] receiveData = new byte[1024];
        byte[] sendData = new byte[1024];
        while (true) {
            DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
            serverSocket.receive(receivePacket);
            String sentence = new String(receivePacket.getData());
            InetAddress IPAddress = receivePacket.getAddress();
            int port = receivePacket.getPort();
            System.out.println("From " + IPAddress + ":" + port + " Message: " + sentence);
            String capitalizedSentence = sentence.toUpperCase();
            sendData = capitalizedSentence.getBytes();
            DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, port);
            serverSocket.send(sendPacket);
        }
    }
}

import java.net.*;

public class UDPClient {
    public static void main(String args[]) throws Exception {
        DatagramSocket clientSocket = new DatagramSocket();
        InetAddress IPAddress = InetAddress.getByName("localhost");
        byte[] sendData = new byte[1024];
        byte[] receiveData = new byte[1024];
        while (true) {
            String sentence = new String(System.in.readAllBytes());
            sendData = sentence.getBytes();
            DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 9876);
            clientSocket.send(sendPacket);
            DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
            clientSocket.receive(receivePacket);
            String modifiedSentence = new String(receivePacket.getData());
            System.out.println("From Server: " + modifiedSentence);
        }
    }
}

这是一个简单的聊天室，客户端可以输入消息并通过UDP协议发送给服务器，服务器将消息转换为大写后发送回客户端。你可以根据自己的需求修改代码。