getmacaddress.java

一个用java作的

package mac;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.LineNumberReader;

public class GetMACAddress
{
    public String getMACAddress(String ipAddress)
    {
        String str = "",strMAC = "",macAddress = "";
        try
        {
            Process pp = Runtime.getRuntime().exec("nbtstat -a " + ipAddress);
            InputStreamReader ir = new InputStreamReader(pp.getInputStream());
            LineNumberReader input = new LineNumberReader(ir);
            for(int i = 1;i < 100;i++)
            {
                str = input.readLine();
                if(str != null)
                {
                    if(str.indexOf("MAC Address") > 1)
                    {
                        strMAC = str.substring(str.indexOf("MAC Address") + 14,str.length());
                        break;
                    }
                }
            }
        }
        catch(IOException ex)
        {
            return "Can't Get MAC Address!";
        }
        //
        if(strMAC.length() < 17)
        {
            return "Error!";
        }
        macAddress = strMAC.substring(0,2) + ":"
            + strMAC.substring(3,5) + ":"
            + strMAC.substring(6,8) + ":"
            + strMAC.substring(9,11) + ":"
            + strMAC.substring(12,14) + ":"
            + strMAC.substring(15,17);
        //
        return macAddress;
    }

    public static void main(String[] args)
    {
        GetMACAddress getMACAddress = new GetMACAddress();
        System.out.println(getMACAddress.getMACAddress("192.168.16.227"));

        try
        {
            java.lang.Process proc = Runtime.getRuntime().exec("ipconfig /all");
            InputStream istr = proc.getInputStream();
            byte[] data = new byte[1024];
            istr.read(data);
            String netdata = new String(data);
            System.out.println("Your Mac Address=" + procAll(netdata));
        }
        catch(IOException e)
        {
            System.out.println("error=" + e);
        }
    }

    public static String procAll(String str)
    {
        return procStringEnd(procFirstMac(procAddress(str)));
    }

    public static String procAddress(String str)
    {
        int indexof = str.indexOf("Physical Address");
        if(indexof > 0)
        {
            return str.substring(indexof,str.length());
        }
        return str;
    }

    public static String procFirstMac(String str)
    {
        int indexof = str.indexOf(":");
        if(indexof > 0)
        {
            return str.substring(indexof + 1,str.length()).trim();
        }
        return str;
    }

    public static String procStringEnd(String str)
    {
        int indexof = str.indexOf("\r");
        if(indexof > 0)
        {
            return str.substring(0,indexof).trim();
        }
        return str;
    }
}