利用正则表达式获取网卡的MAC地址

现在网上有许多用java实现的获取MAC地址的方法，都是利用了windows系统的config命令，但是这些方法都是直接查找config命令的输 出字符串。这种方法对一种语言的windows系统还可以，当在其它语言的系统下运行时，就会出现问题，本文的代码利用正则表达式，使获取MAC地址的程 序能够在多语言环境下运行。 import java.io.*; import java.util.regex.*; public class ReadMacByJava { private String mPhysicalAddress = ""; private int mPhysicalMacNumber = 0; private boolean isInit = false; public ReadMacByJava() { } public void init() { try { String line; Process process = Runtime.getRuntime().exec("cmd /c ipconfig /all"); BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(process.getInputStream())); Pattern macPattern = Pattern.compile("([0-9A-Fa-f]{2})(-[0-9A-Fa-f]{2}){5}"); Matcher macMatcher; boolean result; while ((line = bufferedReader.readLine()) != null) { if ("".equals(line)) continue; macMatcher = macPattern.matcher(line); result = macMatcher.find(); if (result) { mPhysicalMacNumber++; if ("".equals(mPhysicalAddress)) mPhysicalAddress = macMatcher.group(0); else mPhysicalAddress += ("," + macMatcher.group(0)); } } } catch (Exception e) { e.printStackTrace(); } isInit = true; } public String getPhysicalAddress() { if (isInit) return this.mPhysicalAddress; else return "Mac is not init."; } public int getPhysicalMacNumber() { if (isInit) return this.mPhysicalMacNumber; else { System.out.println("Mac is not init."); return 0; } } public static void main(String[] args) { ReadMacByJava mac = new ReadMacByJava(); mac.init(); System.out.println("MAC "+mac.getPhysicalMacNumber()+" address :" + mac.getPhysicalAddress()); } }

  运行结果：
C:\java>java ReadMacByJava
MAC 1 address :00-40-CA-C9-9F-71


来源：http://www.java3z.com/cwbwebhome/article/article5/5930.html?id=1873