JAVA UDP 编程小案例（包含中文发送解决方案）

来源：互联网发布：log4j 关闭sql日志编辑：程序博客网时间：2024/06/06 07:32

import java.net.*;
import java.util.*;
class SocketDemo
{
public static void main(String[] args) throws Exception
{
  DatagramSocket ds = new DatagramSocket();
  Scanner sc = new Scanner(System.in);
  new Thread(new Runnable(){
   public void run()
   {
    DatagramSocket ds=null;
    byte[] buf=null;
    try{
    ds = new DatagramSocket(10000);
    buf = new byte[1024];
    }catch(Exception e){}
    while(true){
     try{

      DatagramPacket dp = new DatagramPacket(buf,buf.length);
      ds.receive(dp);

      String ip = dp.getAddress().getHostName();
      System.out.println(ip+":"+new String(dp.getData(),0,dp.getLength(),"utf-8"));//用指定的解码方式解码
     }catch(Exception e){}

    }
   }
  }).start();
  while(true){
   String str= sc.next();
   byte[] byt =str.getBytes("utf-8"); //指定编码

DatagramPacket dp = new DatagramPacket(byt,byt.length,InetAddress.getByName("127.0.0.1"),10000);

   ds.send(dp);
  }

}
}