正则表达式特定字符串的任何大写变体

Question

我正在尝试捕捉特定字符串 thefolder 是否包含任何大写字符。

http://www.example.com/thefolder = false
http://www.example.com/theDirectory = false
http://www.example.com/theFolder = true
http://www.example.com/ThefolDeR = true
http://www.example.com/THEFOLDER = true

到目前为止，我有以下正则表达式，但它也会为 theDirectory 返回 true，这是不需要的。

(?=.*[A-Z]).+

重要的是要注意，它必须完全匹配特定字符串 thefolder，因为这是用于 IIS 重写，不能影响站点的其余部分。

Answer 1

这可能行得通。使用先行查看 thefolder(长度为 9)是否有
大写字母。如果是，则匹配。

(?=(?i:thefolder))(?![a-z]{9})(.{9})

Formatted:

 (?=
      (?i: thefolder )
 )
 (?! [a-z]{9} )
 ( .{9} )

在最坏的情况下，总是存在排列(没有语法，只有类和交替)。
但是，这总是会导致一个大字符串。

T[hH][eE][fF][oO][lL][dD][eE][rR]|[tT]H[eE][fF][oO][lL][dD ][eE][rR]|[tT][hH]E[fF][oO][lL][dD][eE][rR]|[tT][hH][eE]F[oO][lL] [dD][eE][rR]|[tT][hH][eE][fF]O[lL][dD][eE][rR]|[tT][hH][eE][fF][oO ]L[dD][eE][rR]|[tT][hH][eE][fF][oO][lL]D[eE][rR]|[tT][hH][eE][fF] [oO][lL][dD]E[rR]|[tT][hH][eE][fF][oO][lL][dD][eE]R

   T [hH] [eE] [fF] [oO] [lL] [dD] [eE] [rR] 
|  [tT] H [eE] [fF] [oO] [lL] [dD] [eE] [rR] 
|  [tT] [hH] E [fF] [oO] [lL] [dD] [eE] [rR] 
|  [tT] [hH] [eE] F [oO] [lL] [dD] [eE] [rR] 
|  [tT] [hH] [eE] [fF] O [lL] [dD] [eE] [rR] 
|  [tT] [hH] [eE] [fF] [oO] L [dD] [eE] [rR] 
|  [tT] [hH] [eE] [fF] [oO] [lL] D [eE] [rR] 
|  [tT] [hH] [eE] [fF] [oO] [lL] [dD] E [rR] 
|  [tT] [hH] [eE] [fF] [oO] [lL] [dD] [eE] R