Java获取本机mac地址

4zy7i13kg5

　　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 & 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;
}
}