获取MAC地址最有效方法作为软件加密时用到在不同系统平台下

 

 最好不要用命令来获取信息 这里写出来只是通过一个比较而已

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;
import java.util.Enumeration;

import com.sun.net.httpserver.HttpContext;



/**
 * @className: SystemTool
 * @description: 获取MAC地址
 * @author:
 */
public class SystemTool 
{
    
    /**
     * 获取当前操作系统名称. return 操作系统名称 例如:windows xp,mac os,unix，linux 等.
     */
    public String getOSName() 
    {
        return System.getProperty("os.name").toLowerCase();
    }

    /**
     * 获取mac os网卡的mac地址.
     * 
     * @return mac地址
     */public String getMacosMACAddress() {
  String mac = null;
  BufferedReader bufferedReader = null;
  Process process = null;
  try 
  {
   //mac os下的命令 一般取ether 作为本地主网卡 显示信息中包含有MAC地址信息
   process = Runtime.getRuntime().exec("/bin/sh -c ifconfig -a");

   bufferedReader = new BufferedReader(new InputStreamReader(process
     .getInputStream()));
   String line = null;
   int index = -1;
   while ((line = bufferedReader.readLine()) != null) {
    index = line.toLowerCase().indexOf("ether");
    if (index >= 0) {
     mac = line.substring(index + "ether".length() + 1).trim();

     break;
    }
   }
  } catch (IOException e) {
   e.printStackTrace();
  } finally {
   try {
    if (bufferedReader != null) {
     bufferedReader.close();
    }
   } catch (IOException e1) {
    e1.printStackTrace();
   }
   bufferedReader = null;
   process = null;
  }

  return mac;
 }


    /**
     * 获取unix网卡的mac地址.
     * 
     * @return mac地址
     */
    public String getUnixMACAddress() {
        String mac = null;
        BufferedReader bufferedReader = null;
        Process process = null;
        try {
            //unix下的命令一般取eth0 作为本地主网卡 显示信息中包含有MAC地址信息
            process = Runtime.getRuntime().exec("ifconfig eth0");

            bufferedReader = new BufferedReader(new InputStreamReader(process
                    .getInputStream()));
            String line = null;
            int index = -1;
            while ((line = bufferedReader.readLine()) != null) 
            {  
                //寻找标示字符串【hwaddr】物理网卡地址
                index = line.toLowerCase().indexOf("hwaddr");
                //找到了地址
                if (index >= 0)
                {
                    //取出mac地址并去除两边空格
                    mac = line.substring(index + "hwaddr".length() + 1).trim();

                    break;
                }
            }
        } 
        catch (IOException e) 
        {
            e.printStackTrace();
        } 
        finally 
        {
            try {
                if (bufferedReader != null) 
                {
                    bufferedReader.close();
                }
            } 
            catch (IOException e1)
            {
                e1.printStackTrace();
            }
            bufferedReader = null;
            process = null;
        }

        return mac;
    }

    /**
     * 获取Linux网卡的mac地址.
     * @author 

     * @create date 2012.6.27
     * @return mac地址
     */
    public static String getLinuxMACAddress()
    {
        String mac = null;
        BufferedReader bufferedReader = null;
        Process process = null;
        try {
            //linux下的命令一般取eth0 作为本地主网卡 显示信息中包含有MAC地址信息  用process流
            process = Runtime.getRuntime().exec("ifconfig ");

            bufferedReader = new BufferedReader(new InputStreamReader(process
                    .getInputStream()));
            String line = null;
            int index = -1;
            while ((line = bufferedReader.readLine()) != null) 
            {  
                //寻找标示字符串 物理网卡地址
                index = line.toLowerCase().indexOf("hwaddr");
                //找到了地址
                if (index !=-1)
                {
                    //取出mac地址并去除两边空格
                    mac = line.substring(index + 4).trim();

                    break;
                }
            }
        } 
        catch (IOException e) 
        {
            e.printStackTrace();
        } 
        finally 
        {
            try {
                if (bufferedReader != null) 
                {
                    bufferedReader.close();
                }
            } 
            catch (IOException e1)
            {
                e1.printStackTrace();
            }
            bufferedReader = null;
            process = null;
        }

        return mac;
    }

    
    
    /**
     * 获取widnows网卡的mac地址.
     * 
     * @return mac地址
     */
    /**
     * 获取ip地址.
     * 这种方式只能在Windows上使用可以  如果在linux平台可能有问题 会得到127.0.0.1
     * @return ip地址
     */
    public String getIpAddress() 
    {
        String IP = "";
        InetAddress ia = null;
        try 
        {
            ia = InetAddress.getLocalHost();
        } 
        catch (UnknownHostException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        IP = ia.getHostAddress().trim();

        return IP;
    }
    /**
     * 根据网卡获取本机配置的ip地址.在linux平台下
     * 
     * Author: 

     * Create Date: 2012.6.26
     * @return  linux ip
     */
    public String getIpAddressOnLinux() 
    {  
        // 枚举本机所有网卡对象
        Enumeration allNetInterfaces = null;
        try
        {
            //显示本机所有网卡硬件地址
            allNetInterfaces = NetworkInterface.getNetworkInterfaces();
        } 
        catch (SocketException e) 
        {
        // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        InetAddress ip=null;
        String IPAdd="";
        while(allNetInterfaces.hasMoreElements())
        {  
            NetworkInterface netInterface=(NetworkInterface)allNetInterfaces.nextElement();
            //System.out.println(netInterface.getName());
            ip=(InetAddress)netInterface.getInetAddresses().nextElement();
            if(ip.isSiteLocalAddress()||ip.isLoopbackAddress())
            {
                //System.out.println("本机的ip="+ ip.getHostAddress());
                break;
            }
            else
            {
                ip=null;
            }
        }
        IPAdd=ip.getHostAddress();
        return IPAdd;
    }
    
    /**
     * mac os x Hardware UUID
     * 
     * @return UUID
     */
    public  String getMacosxUUID() {
        String mac = null;
        BufferedReader bufferedReader = null;
        Process process = null;
        try {
            process = Runtime.getRuntime().exec("system_profiler SPHardwareDataType");
            bufferedReader = new BufferedReader(new InputStreamReader(
                    process.getInputStream()));
            String line = null;
            int index = -1;
            while ((line = bufferedReader.readLine()) != null) {
                index = line.toLowerCase().indexOf("hardware uuid");
                if (index >= 0) {
                    mac = line.substring(index + "hardware uuid".length() + 1).trim();
                    break;
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (bufferedReader != null) {
                    bufferedReader.close();
                }
            } catch (IOException e1) {
                e1.printStackTrace();
            }
            bufferedReader = null;
            process = null;
        }

        return mac;
    }
    
      /**Author: 

       * Create Date: 2012.6.25
       * @return 通过命令获取网卡地址存在一定的问题， 直接通过IP来获取MAC ADDRESS
       */
        public String getMACAddress(InetAddress ia)throws Exception 
        {
            
            // TODO Auto-generated method stub
            //获得网络接口即网卡 并得到MAC地址 mac地址存在于一个byte数组中
            byte[] mac=NetworkInterface.getByInetAddress(ia).getHardwareAddress();
            //把mac地址拼装成string
            StringBuffer sb=new StringBuffer();
            for(int i=0;i<mac.length;i++)
            {   
                if(i!=0)
                {
                    sb.append("-");
                }
                //mac[i]&0xff是为了把BYTE化为整数
                String s=Integer.toHexString(mac[i]&0xFF);
                sb.append(s.length()==1?0+s:s);
            }
            //把字符串所有小写字母改为大写为正规的mac地址并返回
            return sb.toString().toUpperCase();
        }
        
        
                
}