我可以使用哪个Java正则表达式来匹配在查询字符串前面有大写字母的URL?

^/contextroot/([^?]*[A-Z][^?]*)(\?.*)?$

^/contextroot/  # literal start of URL
(               # match group 1
  [^?]*         # anything except `?` (zero or more)
  [A-Z]         # one capital letter
  [^?]*         # see above
)
(               # match group 2
  \?            # one ?
  .*            # anything that follows
)?              # optionally
$               # end of string    

(^/contextroot/(?=[^?A-Z]*[A-Z])[^?]*)(\?.*)?

说明:

(                 # match group 1
  ^/contextroot/  #   literal start of URL (optional, remove if not needed)
  (?=             #   positive look-ahead...
    [^?A-Z]*      #     anything but a question mark or upper-case letters
    [A-Z]         #     a mandatory upper-case letter
  )               #   end look-ahead
  [^?]*           #   match anything but a question mark
)                 # end group 1
(                 # match group 2
  \?.*            #   a question mark and the rest of the query string
)?                # end group 2, make optional

请注意,这是为了检查一个单一的网址和不工作时,运行一个多行字符串。

(^/contextroot/(?=[^?A-Z\r\n]*[A-Z])[^?\r\n]*)(\?.*)?