用UDP协议写简易聊天室

来源：互联网发布：大数据研究生考试科目编辑：程序博客网时间：2024/05/29 07:29

客户端

public class Useer {public static void main(String[] args) throws SocketException {DatagramSocket user = new DatagramSocket(101);// 发送数据new Thread(new Runnable() {@Overridepublic void run() {BufferedReader br = new BufferedReader(new InputStreamReader(System.in));while (true) {try {String line = br.readLine();if ("bye".equals(line)) {break;}byte[] b = line.getBytes();DatagramPacket page = new DatagramPacket(b, b.length, InetAddress.getLocalHost(), 100);user.send(page);} catch (IOException e) {e.printStackTrace();}}}}).start();// 接收数据new Thread(new Runnable() {@Overridepublic void run() {byte[] b = new byte[1024];while (true) {DatagramPacket page = new DatagramPacket(b, b.length);try {user.receive(page);System.out.println("客户端：" + page.getAddress().getHostAddress() + "   " + page.getPort() + "   "+ new String (page.getData()));} catch (IOException e) {e.printStackTrace();}}}}).start();}}

服务端：

public class Server {public static void main(String[] args) throws SocketException {DatagramSocket cline = new DatagramSocket(100);//发送数据new Thread(new Runnable() {@Overridepublic void run() {try {//从控制台接收字符串BufferedReader br = new BufferedReader(new InputStreamReader(System.in));while (true) {//每次读一行String line = br.readLine();if ("bye".equals(line)) {break;}//将字符串转换为byte数组byte[] b = line.getBytes();// 数据包(传输4个参数)DatagramPacket page = new DatagramPacket(b, b.length, InetAddress.getLocalHost(), 101);cline.send(page);}} catch (Exception e) {e.printStackTrace();}}}).start();//接收数据new Thread(new Runnable() {@Overridepublic void run() {try {while (true) {// 2.创建接受数据的数据包byte[] b = new byte[1024];// 数据包(接收定义长度)DatagramPacket page = new DatagramPacket(b, b.length);// cline接收page里的数据cline.receive(page);System.out.println("服务器:" + page.getAddress().getHostAddress() + "   " + page.getPort() + "   "+ new String(page.getData()));}} catch (Exception e) {e.printStackTrace();}}}).start();}}

阅读全文

1 0