多线程实现UDP协议发送和接收

package 多线程实现UDP协议发送和接收;


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();
}

}

package 多线程实现UDP协议发送和接收;


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();
}
}


}

package 多线程实现UDP协议发送和接收;


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("192.168.12.92"), 12345);
DatagramPacket dp = new DatagramPacket(bys, bys.length,
InetAddress.getByName("niuchengfei"), 12306);


// 发送数据
ds.send(dp);
}


// 释放资源
ds.close();
} catch (IOException e) {
e.printStackTrace();
}
}


}