JAVA Socket UDP实现聊天 通过Socket网络编程，UDP实现简单聊天。主要涉及DatagramSocket进行数据传输、DatagramPacket进行数据包封装，2个类。发送端:package learn.javase.chat; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.util.Scanner; /** * 控制台输入；实现聊天。 * 发送方 * @author Jole * */ public class UdpSend { public static void main(String[] args) throws Exception{ Scanner scan = new Scanner(System.in); InetAddress ia = InetAddress.getByName("192.168.1.4"); DatagramSocket socket = new DatagramSocket(); while(true) { String chatInfo = scan.nextLine(); byte[] info = chatInfo.getBytes(); DatagramPacket pack = new DatagramPacket(info, info.length, ia, 6000); socket.send(pack); } } } 接收端：package learn.javase.chat; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; /** * UDP：接收方 * @author Jole * */ public class UdpReceive { public static void main(String[] args) throws Exception{ DatagramSocket socket = new DatagramSocket(6000); byte[] info = new byte[1024]; while(true) { DatagramPacket pack = new DatagramPacket(info, info.length); socket.receive(pack); InetAddress ia = pack.getAddress(); System.out.println(ia.getHostName()+"-"+pack.getPort()+":"+new String(info,0,pack.getLength())); } } }