Kotlin,如何在HTML中查找iframe标记与特殊src的匹配

而且,这是可行的

<iframe(?=\s)(?=(?:[^>"']|"[^"]*"|'[^']*')*?\ssrc\s*=\s*(?:(['"])(?:(?!\1)[\S\s])*?(?:specical\.com/external/widget/api\.php?)(?:(?!\1)[\S\s])*?\1))\s+(?:"[\S\s]*?"|'[\S\s]*?'|[^>]*?)+>

https://regex101.com/r/gUEfvy/1

 < iframe
 (?= \s )
 (?=                           # Asserttion for:  src  (a pseudo atomic group)
      (?: [^>"'] | " [^"]* " | ' [^']* ' )*?
      \s src \s* = \s* 
      (?:
           ( ['"] )                      # (1)
           (?:
                (?! \1 )
                [\S\s] 
           )*?
           (?:                           # 
                specical\.com/external/widget/api\.php? 
           )
           (?:
                (?! \1 )
                [\S\s] 
           )*?
           \1 
      )
 )
                               # Have the src attribute, just match the rest of tag
 \s+ 
 (?: " [\S\s]*? " | ' [\S\s]*? ' | [^>]*? )+

 >                             # End  tag

这似乎奏效:

val patternString = "(?:<iframe\\s)(?:[^<]*)(?:src=\\s*)(?:\"\\/\\/specical\\.com/external\\/widget\\/api.php?\\s*?)(?:[^>]*)>"
val pattern = Pattern.compile(patternString)
val matcher = pattern.matcher(str) 

我肯定有更好的