本文着重为大家仔细讲解了java利用udp实现发送数据，文中代码实例讲解的非常细致，希望能够帮助到您，欢迎大家阅读和收藏
1.udp的特点
2.发送端
package cn.uu710.SocketTest;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;
public class Send1 {
public static void main(String[] args) {
try {
DatagramSocket datagramSocket = new DatagramSocket();
String data = "这是张佑发送的消息！";
DatagramPacket datagramPacket = new DatagramPacket(data.getBytes(),data.getBytes().length,InetAddress.getLocalHost(),8088);
//发送
System.out.println("正在准备发送……");
datagramSocket.send(datagramPacket);
System.out.println("已发送……");
datagramSocket.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
3.接收端
package cn.uu710.SocketTest;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;
import com.sun.org.apache.bcel.internal.generic.NEW;
public class receive1 {
public static void main(String[] args) {
try {
DatagramSocket datagramSocket = new DatagramSocket(8088);
byte[] b = new byte[1024];
DatagramPacket datagramPacket = new DatagramPacket(b,b.length);
System.out.println("正在准备接收……");
//未接收之前为阻塞状态
datagramSocket.receive(datagramPacket);
System.out.println("接收内容："+new String(b,0,b.length));
System.out.println("已经接收……");
datagramSocket.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
4. 运行程序
先启动接收端，再运行发送端
启动接收端后，程序并未停止，因为还未接收到消息
再启动发送端，此时接收端成功接收到消息，之后程序停止
