不同的MAC地址正则表达式

Question

匹配MAC地址的正确正则表达式是什么？我搜索了一下,但大多数问题和答案都不完整.它们只提供正则表达式 the standard (IEEE 802) format for printing MAC-48 addresses in human-friendly form is six groups of two hexadecimal digits, separated by hyphens - or colons :.但是,这不是现实世界的情况.许多路由器,交换机和其他网络设备供应商提供的MAC地址格式如下:

3D:F2:C9:A6:B3:4F //<-- standard 
3D-F2-C9-A6-B3:4F //<-- standard
3DF:2C9:A6B:34F   
3DF-2C9-A6B-34F
3D.F2.C9.A6.B3.4F
3df2c9a6b34f // <-- normalized

直到这一刻我才拥有的是:

public class MacAddressFormat implements StringFormat {
  @Override
  public String format(String mac) throws MacFormatException {
    validate(mac);
    return normalize(mac);
  }

  private String normalize(String mac) {

    return mac.replaceAll("(\\.|\\,|\\:|\\-)", "");
  }

  private void validate(String mac) {


    if (mac == null) {
      throw new MacFormatException("Empty MAC Address: !");
    }
    // How to combine these two regex together ? 
    //this one 
    Pattern pattern = Pattern.compile("^([0-9A-Fa-f]{2}[\\.:-]){5}([0-9A-Fa-f]{2})$");
    Matcher matcher = pattern.matcher(mac);
    // and this one ? 
    Pattern normalizedPattern = Pattern.compile("^[0-9a-fA-F]{12}$");
    Matcher normalizedMatcher = normalizedPattern.matcher(mac);

    if (!matcher.matches() && !normalizedMatcher.matches()) {
      throw new MacFormatException("Invalid MAC address format: " + mac);
    }

  }
}

你如何在代码中结合两个正则表达式？

Answer 1

为什么这么多代码？以下是如何"规范化"您的mac地址:

mac.replaceAll("[^a-fA-F0-9]", "");

以下是验证它的方法:

public boolean validate(String mac) {
   Pattern p = Pattern.compile("^([a-fA-F0-9][:-]){5}[a-fA-F0-9][:-]$");
   Matcher m = p.matcher(mac);
   return m.find();
}