柚子快報邀請碼778899分享：Java網(wǎng)絡(luò)編程---UDP

http://yzkb.51969.com/

客戶端

import java.net.DatagramPacket;

import java.net.DatagramSocket;

import java.net.InetAddress;

import java.util.Scanner;

public class Client {

public static void main(String[] args) throws Exception {

//1.創(chuàng)建客戶端對象

DatagramSocket socket = new DatagramSocket();

//2.創(chuàng)建數(shù)據(jù)包對象封裝要發(fā)出去的數(shù)據(jù)

/* public DatagramPacket(byte buf[], int offset, int length,

InetAddress address, int port)*/

Scanner sc = new Scanner(System.in);

while (true){

//將數(shù)據(jù)轉(zhuǎn)成字節(jié)

System.out.println("user:");

String msg = sc.nextLine();

if ("exit".equals(msg)){

System.out.println("退出成功!");

socket.close();

break;

}

byte[] bytes =msg.getBytes();

DatagramPacket packet = new DatagramPacket(bytes, bytes.length,InetAddress.getLocalHost(),6666);

//3.發(fā)送

socket.send(packet);

}

}

}

服務(wù)端

import java.nio.charset.StandardCharsets;

import java.net.DatagramPacket;

import java.net.DatagramSocket;

public class Server {

public static void main(String[] args) throws Exception{

System.out.println("----------服務(wù)端-----------");

//1.創(chuàng)建一個服務(wù)端的對象

DatagramSocket socket = new DatagramSocket(6666);

//2.創(chuàng)建一個數(shù)據(jù)包對象 來接數(shù)據(jù)

byte[] buffer = new byte[1024 * 64]; //64kb

DatagramPacket packet = new DatagramPacket(buffer, buffer.length);

while (true){

//接收數(shù)據(jù)

socket.receive(packet);

//打印出來

int len = packet.getLength();

String rs = new String(buffer,0,len, StandardCharsets.UTF_8);

System.out.println(rs);

//接收的客戶端的信息

System.out.println(packet.getAddress());

System.out.println(packet.getPort());

System.out.println("-----------------------------------------");

}

}

}

效果

柚子快報邀請碼778899分享：Java網(wǎng)絡(luò)編程---UDP

http://yzkb.51969.com/

相關(guān)文章