标签:unknown 接收 amp stack java 数据信息 udp length host
package com.atguigu.java1;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.UnknownHostException;
import org.junit.Test;
//UDP编程的实现
public class TestUDP {
// 发送端
@Test
public void send() {
DatagramSocket ds = null;
try {
ds = new DatagramSocket();
byte[] b = "你好,我是要发送的数据".getBytes();
//创建一个数据报:每一个数据报不能大于64k,都记录着数据信息,发送端的IP、端口号,以及要发送到
//的接收端的IP、端口号。
DatagramPacket pack = new DatagramPacket(b, 0, b.length,
InetAddress.getByName("127.0.0.1"), 9090);
ds.send(pack);
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(ds != null){
ds.close();
}
}
}
// 接收端
@Test
public void rceive() {
DatagramSocket ds = null;
try {
ds = new DatagramSocket(9090);
byte[] b = new byte[1024];
DatagramPacket pack = new DatagramPacket(b, 0, b.length);
ds.receive(pack);
String str = new String(pack.getData(), 0, pack.getLength());
System.out.println(str);
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if(ds != null){
ds.close();
}
}
}
}
标签:unknown 接收 amp stack java 数据信息 udp length host
原文地址:http://www.cnblogs.com/taz372436/p/6892938.html