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UDP网络编程之多线程优化——DatagramSocket类
1、UDP网络编程之多线程优化的思想
(1)一个线程实现客户端——发送数据
(2)一个线程实现服务器端——接收数据
(3)在控制台显示解析出来的数据
2、UDP网络编程之多线程优化
(1)发送数据端的线程——客户端线程
package cn.itcast_05;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
public class SendThread implements Runnable {
private DatagramSocket ds;
public SendThread(DatagramSocket ds) {
this.ds = ds;
}
@Override
public void run() {
try {
// 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("192.168.12.255"), 12306);
// 发送数据
ds.send(dp);
}
// 释放资源
ds.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
(2)接收数据端的线程——服务器端线程
package cn.itcast_05;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
public class ReceiveThread implements Runnable {
private DatagramSocket ds;
public ReceiveThread(DatagramSocket ds) {
this.ds = ds;
}
@Override
public void run() {
try {
while (true) {
// 创建一个包裹
byte[] bys = new byte[1024];
DatagramPacket dp = new DatagramPacket(bys,bys.length);
// 接收数据
ds.receive(dp);
// 解析数据
String ip = dp.getAddress().getHostAddress();
String s = new String(dp.getData(),0,dp.getLength());
System.out.println("from " + ip + " data is : " + s);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
(3)通过多线程改进刚才的聊天程序,这样我们就可以实现在一个窗口发送和接收数据了
package cn.itcast_05;
import java.io.IOException;
import java.net.DatagramSocket;
/*
* 通过多线程改进刚才的聊天程序,这样我就可以实现在一个窗口发送和接收数据了
*/
public class ChatRoom {
public static void main(String[] args) throws IOException {
DatagramSocket dsSend = new DatagramSocket();
DatagramSocket dsReceive = new DatagramSocket(12306);
SendThread st = new SendThread(dsSend);
ReceiveThread rt = new ReceiveThread(dsReceive);
Thread t1 = new Thread(st);
Thread t2 = new Thread(rt);
t1.start();
t2.start();
}
}