Java获取本机mac地址

下面的两种方法都能获取本机的mac地址，但是第二种方法需要使用jdk1.6。

 

package cn.lifx.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;

public class MacAddressTest
{
	public static void main(String[] args)
	{
		String address = "";
		String host = "*.*.*.*";
		
		MacAddressTest test = new MacAddressTest();
		
		address = test.getMacAddress();
		System.out.println("Physical Address is : " + address);
		
		address = test.getMacAddress(host);
		System.out.println("Physical Address is : " + address);
	}
	
	public String getMacAddress()
	{
		String mac = "";  
		String line = "";
        
        String os = System.getProperty("os.name");  
        
        if (os != null && os.startsWith("Windows")) 
        {   
            try 
            {   
                String command = "cmd.exe /c ipconfig /all";   
                Process p = Runtime.getRuntime().exec(command);   
                
                BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));   
                
                while((line = br.readLine()) != null)
                {   
                    if (line.indexOf("Physical Address") > 0)
                    {   
                        int index = line.indexOf(":") + 2;
                        
                        mac = line.substring(index);
                        
                        break;   
                    }   
                }   
                
                br.close();   
                
            } catch (IOException e) {}   
        }   
        
        return mac;   
	}
	
	public String getMacAddress(String host)
	{
		String mac = "";
		StringBuffer sb = new StringBuffer();
		
		try 
		{
			NetworkInterface ni = NetworkInterface.getByInetAddress(InetAddress.getByName(host));
			
			byte[] macs = ni.getHardwareAddress();
			
			for(int i=0; i<macs.length; i++)
			{
				mac = Integer.toHexString(macs[i] & 0xFF); 
				
			     if (mac.length() == 1) 
			     { 
			    	 mac = '0' + mac; 
			     } 

				sb.append(mac + "-");
			}
						
		} catch (SocketException e) {
			e.printStackTrace();
		} catch (UnknownHostException e) {
			e.printStackTrace();
		}
		
		mac = sb.toString();
		mac = mac.substring(0, mac.length()-1);
		
		return mac;
	}
}