java获取系统IP,MAC地址

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SystemMessageUtil {

	 final static Logger logger = LoggerFactory.getLogger(SystemMessageUtil.class);
	/**
    * 获取当前操作系统名称.
    * return 操作系统名称 例如:windows xp,linux 等.
    */
   public static String getOSName() {
       return System.getProperty("os.name").toLowerCase();
   }

	/**
	 * <p> 方法 getLocalIp</p>
	 * 获取本机ip地址
	 * @return
	 */
	public static String getLocalIp() {
		String localIp = null;
		try {
			localIp = InetAddress.getLocalHost().getHostAddress();
		} catch (UnknownHostException e) {
			logger.info("获取服务器IP地址失败!");
			e.printStackTrace();
		}
		return localIp;
	}

	/**
	 * <p> 方法 getLocalMac</p>
	 * 获取本机MAC地址
	 * @return
	 */
	public static String getLocalMac() {
		String os = getOSName();
		String mac = null;
		try {
			// System.out.println(os);
			if (os.startsWith("windows")) {
				// 本地是windows
				mac = getWindowsMACAddress();
				// System.out.println(mac);
			} else {
				// 本地是非windows系统 一般就是unix
				mac = getUnixMACAddress();
				// System.out.println(mac);
			}
		} catch (Exception e) {
			logger.info("获取服务器MAC地址失败!");
			e.printStackTrace();
		}
		return mac;
	}


	  /**
		 * 获取unix网卡的mac地址. 非windows的系统默认调用本方法获取.如果有特殊系统请继续扩充新的取mac地址方法.
		 *
		 * @return mac地址
		 */
   public static String getUnixMACAddress() {
       String mac = null;
       BufferedReader bufferedReader = null;
       Process process = null;
       try {
           process = Runtime.getRuntime().exec("ifconfig eth0");// 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
           bufferedReader = new BufferedReader(new InputStreamReader(process
                   .getInputStream()));
           String line = null;
           int index = -1;
           while ((line = bufferedReader.readLine()) != null) {
               index = line.toLowerCase().indexOf("hwaddr");// 寻找标示字符串[hwaddr]
               if (index >= 0) {// 找到了
                   mac = line.substring(index +"hwaddr".length()+ 1).trim();//  取出mac地址并去除2边空格
                   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
    */
   public static String getWindowsMACAddress() {
       String mac = null;
       BufferedReader bufferedReader = null;
       Process process = null;
       try {
           process = Runtime.getRuntime().exec("ipconfig /all");// windows下的命令，显示信息中包含有mac地址信息
           bufferedReader = new BufferedReader(new InputStreamReader(process
                   .getInputStream()));
           String line = null;
           int index = -1;
           while ((line = bufferedReader.readLine()) != null) {
               index = line.toLowerCase().indexOf("physical address");// 寻找标示字符串[physical address]
               if (index >= 0) {// 找到了
                   index = line.indexOf(":");// 寻找":"的位置
                   if (index>=0) {
                       mac = line.substring(index + 1).trim();//  取出mac地址并去除2边空格
                   }
                   break;
               }
           }
       } catch (IOException e) {
           e.printStackTrace();
       } finally {
           try {
               if (bufferedReader != null) {
                   bufferedReader.close();
               }
           } catch (IOException e1) {
               e1.printStackTrace();
           }
           bufferedReader = null;
           process = null;
       }

       return mac;
   }

}