JAVA获得网卡MAC地址

package test;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.text.ParseException;
import java.util.StringTokenizer;

public final class NetworkUtils {

 private final static int MACADDR_LENGTH = 17;
 private final static String WIN_OSNAME = "Windows";
 private final static String LINUX_OSNAME = "Linux";
 private final static String OSX_OSNAME = "Mac OS X";
 private final static String MACADDR_REG_EXP = "^[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}-[0-9A-F]{2}$";
 private final static String WIN_MACADDR_EXEC = "ipconfig /all";
 private final static String LINUX_MACADDR_EXEC = "ifconfig";
 private final static String OSX_MACADDR_EXEC = "ifconfig";

 public final static String getMacAddress() throws IOException{
  String os = System.getProperty("os.name");
  try{
   if(os.startsWith(WIN_OSNAME)){
    return windowsParseMacAddress(windowsIpConfigCommand());
   }else if(os.startsWith(LINUX_OSNAME)){
    return linuxParseMacAddress(linuxRunIfConfigCommand());
   }else if(os.startsWith(OSX_OSNAME)) {
    return osxParseMacAddress(osxRunIfConfigCommand());
   }else{
    throw new IOException("OS not supported : " + os);
   }
  }catch(Exception e){
   e.printStackTrace();
   throw new IOException(e.getMessage());
  }
 }
 
 /**
  * OSX stuff
  */
 private final static String osxParseMacAddress(String ipConfigOutput) throws ParseException{
  String localHost = null;
  try {
  localHost = InetAddress.getLocalHost().getHostAddress();
  } catch(java.net.UnknownHostException ex) {
  ex.printStackTrace();
  throw new ParseException(ex.getMessage(), 0);
  }
  StringTokenizer tokenizer = new StringTokenizer(ipConfigOutput, "/n");
  String lastMacAddress = null;
  while(tokenizer.hasMoreTokens()) {
  String line = tokenizer.nextToken().trim();
  boolean containsLocalHost = line.indexOf(localHost) >= 0;
  //see if line contains IP address
  if(containsLocalHost && lastMacAddress != null){
   return lastMacAddress;
  }
  //see if line contains MAC address
  int macAddressPosition = line.indexOf("ether");
  if(macAddressPosition != 0) {
   continue;
  }
  String macAddressCandidate = line.substring(macAddressPosition + 6).trim();
  if(osxIsMacAddress(macAddressCandidate)) {
   lastMacAddress = macAddressCandidate;
   continue;
  }
  }
  ParseException ex = new ParseException
  ("cannot read MAC address for " + localHost + " from [" + ipConfigOutput + "]", 0);
  ex.printStackTrace();
  throw ex;

 }
 
 private final static boolean osxIsMacAddress(String macAddressCandidate){
  if(macAddressCandidate.length() != MACADDR_LENGTH){
   return false;
  }
  if(!macAddressCandidate.matches(MACADDR_REG_EXP)){
   return false;
  }
  return true;
 }
 
 private final static String osxRunIfConfigCommand() throws IOException{
  Process p = Runtime.getRuntime().exec(OSX_MACADDR_EXEC);
  InputStream stdoutStream = new BufferedInputStream(p.getInputStream());
  StringBuffer buffer = new StringBuffer();
  for(;;){
   int c = stdoutStream.read();
   if(c == -1){
    break;
   }
   buffer.append((char) c);
  }
  String outputText = buffer.toString();
  stdoutStream.close();
  return outputText;
 }
 
 /**
  * Linux stuff
  */
 private final static String linuxParseMacAddress(String ipConfigOutput) throws ParseException{
  String localHost = null;
  try {
   localHost = InetAddress.getLocalHost().getHostAddress();
  } catch (UnknownHostException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   throw new ParseException(e.getMessage(),0);
  }
  StringTokenizer tokenizer = new StringTokenizer(ipConfigOutput,"/n");
  String lastMacAddress = null;
  while(tokenizer.hasMoreTokens()){
   String line = tokenizer.nextToken().trim();
   boolean containsLocalHost = line.indexOf(localHost) >= 0;
   //see if line contains IP address
   if(containsLocalHost && lastMacAddress != null){
    return lastMacAddress;
   }
   //see if line contains MAC address
   int macAddressPosition = line.indexOf("HWaddr");
   if(macAddressPosition <= 0){
    continue;
   }
   String macAddressCandidate = line.substring(macAddressPosition + 6).trim();
   if(linuxIsMacAddress(macAddressCandidate)){
    lastMacAddress = macAddressCandidate;
    continue;
   }
  }
  ParseException ex = new ParseException("cannot read MAC address for " + localHost + " from [" + ipConfigOutput + "]",0);
  ex.printStackTrace();
  throw ex;
 }
 
 private final static boolean linuxIsMacAddress(String macAddressCandidate){
  if(macAddressCandidate.length() != MACADDR_LENGTH){
   return false;
  }
  if(!macAddressCandidate.matches(MACADDR_REG_EXP)){
   return false;
  }
  return true;
 }
 
 private final static String linuxRunIfConfigCommand() throws IOException{
  Process p = Runtime.getRuntime().exec(LINUX_MACADDR_EXEC);
  InputStream stdoutStream = new BufferedInputStream(p.getInputStream());
  StringBuffer buffer = new StringBuffer();
  for(;;){
   int c = stdoutStream.read();
   if(c == -1){
    break;
   }
   buffer.append((char)c);
  }
  String outputText = buffer.toString();
  stdoutStream.close();
  return outputText;
 }
 
 /**
  * Windows stuff
  */
 private final static String windowsParseMacAddress(String ipConfigOutput) throws ParseException{
  String localHost = null;
  try {
   localHost = InetAddress.getLocalHost().getHostAddress();
  } catch (UnknownHostException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   throw new ParseException(e.getMessage(),0);
  }
  StringTokenizer tokenizer = new StringTokenizer(ipConfigOutput,"/n");
  String lastMacAddress = null;
  while(tokenizer.hasMoreTokens()){
   String line = tokenizer.nextToken().trim();
   //see if line contains IP address
   if(line.endsWith(localHost) && lastMacAddress != null){
    return lastMacAddress;
   }
   //see if line contains MAC address
   int macAddressPosition = line.indexOf(":");
   if(macAddressPosition <= 0){
    continue;
   }
   String macAddressCandidate = line.substring(macAddressPosition + 1).trim();
   if(windowsIsMacAddress(macAddressCandidate)){
    lastMacAddress = macAddressCandidate;
    continue;
   }
  }
  ParseException ex = new ParseException("cannot read MAC address from [" + ipConfigOutput + "]",0);
  ex.printStackTrace();
  throw ex;
 }
 
 private final static boolean windowsIsMacAddress(String macAddressCandidate){
  if(macAddressCandidate.length() != MACADDR_LENGTH){
   return false;
  }
  if(!macAddressCandidate.matches(MACADDR_REG_EXP)){
   return false;
  }
  return true;
 }
 
 private final static String windowsIpConfigCommand() throws IOException {
  Process p = Runtime.getRuntime().exec(WIN_MACADDR_EXEC);
  InputStream stdoutStream = new BufferedInputStream(p.getInputStream());
  StringBuffer buffer = new StringBuffer();
  for(;;){
   int c = stdoutStream.read();
   if(c == -1){
    break;
   }
   buffer.append((char)c);
  }
  String outputText = buffer.toString();
  stdoutStream.close();
  return outputText;
 }
 
 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  try{
   
   System.out.println(" MAC ADDRESS");
   System.out.println(" OS       :" + System.getProperty("os.name"));
   System.out.println(" IP/Localhost : " + InetAddress.getLocalHost().getHostAddress());
   System.out.println(" MAC Address : " + getMacAddress());
   
  }catch(Throwable t){
   t.printStackTrace();
  }
 }
 
 

}