android學習筆記18--------------UDP樣本

參考別人一幅原理圖。

 




 

import java.io.IOException; 
import java.net.DatagramPacket; 
import java.net.DatagramSocket; 
import java.net.InetAddress; 
 
public class UDPClient 
{ 
    private DatagramSocket client=null; 
    private DatagramPacket packet=null; 
    private InetAddress host=null; 
    public static int portSend=8888; 
    public static String name="192.168.142.199"; 
     
     
    public UDPClient() 
    {        
        try 
        { 
            host = InetAddress.getByName(name); 
            client=new DatagramSocket(); 
                                         
            System.out.println("用戶端準備就緒"); 
        } catch (Exception e) 
        { 
            e.printStackTrace(); 
        }                            
    } 
     
    public void UDPClientRun(byte[] buffer) throws IOException   
    {                                
        host = InetAddress.getByName(name); 
        packet=new DatagramPacket(buffer,buffer.length, host, portSend); 
        client.send(packet);     
        System.out.println("用戶端發送訊息"); 
    } 
     
    public void UDPClientStop() 
    { 
        client.close(); 
    } 
} 
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

public class UDPClient
{
 private DatagramSocket client=null;
 private DatagramPacket packet=null;
 private InetAddress host=null;
 public static int portSend=8888;
 public static String name="192.168.142.199";
 
 
 public UDPClient()
 {  
  try
  {
   host = InetAddress.getByName(name);
   client=new DatagramSocket();
          
   System.out.println("用戶端準備就緒");
  } catch (Exception e)
  {
   e.printStackTrace();
  }        
 }
 
 public void UDPClientRun(byte[] buffer) throws IOException 
 {        
  host = InetAddress.getByName(name);
  packet=new DatagramPacket(buffer,buffer.length, host, portSend);
  client.send(packet); 
  System.out.println("用戶端發送訊息");
 }
 
 public void UDPClientStop()
 {
  client.close();
 }
}

 

[java]
import java.io.IOException; 
import java.net.DatagramPacket; 
import java.net.DatagramSocket; 
 
public class UDPService 
{ 
    private DatagramSocket server =null; 
    private DatagramPacket dPacket=null; 
    private byte[] buffer = new byte[640];   
    public static int portServer=8888; 
     
    public UDPService () 
    { 
        try 
        { 
            server  = new DatagramSocket(portServer);    
            dPacket = new DatagramPacket(buffer, buffer.length); 
        } catch (Exception e) 
        { 
            e.printStackTrace(); 
        }            
    } 
     
    public byte[] UDPServiceRun() 
    {                                                                                            
        try 
        { 
            server.receive(dPacket); 
            System.out.println("服務端接收到訊息"); 
        } catch (IOException e) 
        { 
            e.printStackTrace(); 
            System.out.println("服務端未收到訊息"); 
        }                            
        return buffer;                       
    } 
     
    public void UDPSeverStop() 
    { 
        server.close(); 
    } 
     
    public String getClientName() 
    { 
        String name=""; 
        name=dPacket.getAddress().toString(); 
        return name; 
    } 
     
} 

摘自 奔跑的蝸牛