网络编程_发送端的数据来自于键盘录入案例

来源：互联网发布：14岁麻省理工知乎编辑：程序博客网时间：2024/05/16 10:36

package cn.itcast_04;import java.io.IOException;import java.net.DatagramPacket;import java.net.DatagramSocket;public class ReceiveDemo {public static void main(String[] args) throws IOException {// 创建接收端Socket对象DatagramSocket ds = new DatagramSocket(12345);while (true) {// 创建接收数据包对象byte[] bys = new byte[1024];DatagramPacket dp = new DatagramPacket(bys, bys.length);// 接收数据包ds.receive(dp);// 解析数据,并显示在控制台String ip = dp.getAddress().getHostAddress();String s = new String(dp.getData(), 0, dp.getLength());System.out.println("from" + ip + " data is:" + s);}// 释放资源// ds.close();}}

package cn.itcast_04;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;/* * 数据来自于键盘录入 * 键盘录入要自已控制录入结束。 */public class SedDemo {public static void main(String[] args) throws IOException {// 创建发送端Socket对象DatagramSocket ds = new DatagramSocket();// 封装键盘录入数据BufferedReader br = new BufferedReader(new InputStreamReader(System.in));String line = null;while ((line = br.readLine()) != null) {if ("886".equals(line)) {break;}// 创建数据,并打包byte[] bys = line.getBytes();// DatagramPacket dp = new DatagramPacket(bys, bys.length,// InetAddress.getByName("192.168.31.165"), 12345);DatagramPacket dp = new DatagramPacket(bys, bys.length,InetAddress.getByName("192.168.31.255"), 12345);// 发送数据ds.send(dp);}// 释放资源ds.close();}}

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