通过Socket网络编程，UDPImplementation简单聊天。主要涉及DatagramSocket进行Data传输、DatagramPacket进行Data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()));
}
}
}