UDP-键盘录入方式数据

import java.net.*;
import java.io.*;
class  UdpSend2
{
public static void main(String[] args) throws Exception
{
DatagramSocket ds = new DatagramSocket();


BufferedReader bufr =
new BufferedReader(new InputStreamReader(System.in));


String line = null;


// read()也是阻塞式方法
while ((line=bufr.readLine())!=null)
{
if("886".equals(line))
break;


byte[] buf = line.getBytes();


//192.168.1.0代表网络段，192.168.1.255代表这个段的广播地址
DatagramPacket dp =
new DatagramPacket(buf,buf.length,InetAddress.getByName("192.168.1.101"),10001);

ds.send(dp);
}
ds.close();
}
}




class UdpRece2
{
public static void main(String[] args) throws Exception
{
DatagramSocket ds = new DatagramSocket(10001);
//循环接收
while (true)
{
byte[] buf = new byte[1024];
DatagramPacket dp = new DatagramPacket(buf,buf.length);


ds.receive(dp);


String ip = dp.getAddress().getHostAddress();
String data = new String(dp.getData(),0,dp.getLength());


System.out.println(ip+"::"+data);


}


}
}