java CDM

import  java.io.BufferedReader;
import  java.io.IOException;
import  java.io.InputStreamReader;
import  java.util.logging.Level;
import  java.util.logging.Logger;

/** */ /** **@authorhadeslee */
public   class  Test
{
    public static String getMACAddress()
    {
        String address = "";
        String os = System.getProperty("os.name");
        System.out.println(os);
        if (os != null)
        {
            if (os.startsWith("Windows"))
            {
                try
                {
                    ProcessBuilder pb = new ProcessBuilder("ipconfig", "/all");
                    Process p = pb.start();
                    BufferedReader br = new BufferedReader(
                            new InputStreamReader(p.getInputStream()));
                    String line;
                    while ((line = br.readLine()) != null)
                    {
                        if (line.indexOf("Physical Address") != -1)
                        {
                            int index = line.indexOf(":");
                            address = line.substring(index+1);
                            break;
                        }
                    }
                    br.close();
                    return address.trim();
                }
                catch (IOException e)
                {}
            }
            else if (os.startsWith("Linux"))
            {
                try
                {
                    ProcessBuilder pb = new ProcessBuilder("ifconfig");
                    Process p = pb.start();
                    BufferedReader br = new BufferedReader(
                            new InputStreamReader(p.getInputStream()));
                    String line;
                    while ((line = br.readLine()) != null)
                    {
                        int index = line.indexOf("硬件地址");
                        if (index != -1)
                        {
                            address = line.substring(index, 4);
                            break;
                        }
                    }
                    br.close();
                    return address.trim();
                }
                catch (IOException ex)
                {
                    Logger.getLogger(Test.class.getName()).log(Level.SEVERE,
                            null, ex);
                }
            }
        }
        return address;
    }
    
    public static void main(String[] args)
    {
        System.out.println(Test.getMACAddress());
    }
}