mac地址问题

Question

我想获取另一台计算机的MAC地址，我该怎么做？我使用JPCAP

private void getPackage(JpcapCaptor captor) 
    { 
     try{ 
      IPPacket ip = (IPPacket)captor.getPacket(); 

      for(int a =0 ; a <found.size(); a++) 
      { 
        if(ip.dst_ip.equals(found.get(a))) 
         check = true; 

      } 

      if(!check) 
      { 
       if(ip.dst_ip.isSiteLocalAddress()) 
       { 
        host = ip.dst_ip.getHostName(); 
         System.out.println("destination ip : " + ip.dst_ip + " " + ip.dst_ip.getHostName()); 
         System.out.println("Source ip : " + ip.src_ip + " " + ip.src_ip.getHostName()); 


              found.addElement(ip.dst_ip); 

        } 
      } 

       check = false; 
     }catch(Exception ex) 
     { 
      //Sys.alert("Error" ,"lobby exeption :" + ex); 
      //wegens null reverence exeption 
     } 
    } 

这个代码只是获取IP地址，但我想MAC地址太

Answer 1

http://netresearch.ics.uci.edu/kfujii/Jpcap/doc/javadoc/jpcap/packet/ARPPacket.html

您需要的方法：

公共java.lang.Object继承getSenderHardwareAddress（ ）

package jpcapExample; 
import jpcap.*; 
import jpcap.packet.*; 
class PacketPrinter implements PacketReceiver { 
    public void receivePacket(Packet packet) { 
     if (packet instanceof ARPPacket){ 
      ARPPacket arpp = (ARPPacket) packet; 
      Object str = arpp.getSenderHardwareAddress(); 
      System.out.println("got arp from: " + str.toString()); 

     } 
     System.out.println(packet); 
     } 
    } 
---------------------[ different file ]------------- 
    try { 
    JpcapCaptor eth0= 
     JpcapCaptor. 
     openDevice(devices[eth0idx], 65535, false, 20000); 
    while (true){ 
     eth0.processPacket(1233,new PacketPrinter()); 
    } 
} catch (IOException io){ 
    io.printStackTrace(); 
}