用于匹配没有尾部斜杠的 URL 的正则表达式也没有文件扩展名

Question

到目前为止，阅读了如此多的正则表达式文章，我感到非常困惑。

我要匹配第一个 URL，其余的应该不匹配:

https://subdomain.example.com/test <== only this should match
https://subdomain.example.com/paht/test.css
https://subdomain.example.com/path/path/test.js
https://example.com/test/

我希望只匹配没有尾部斜杠或文件扩展名的路由。

这是我的正则表达式:https:.*^(?!([^\/]|(\.[a-z]{2,8})))$

您可以在这里尝试:https://regexr.com/5dic8

Answer 1

使用

^https?:\/\/(?:.*\/)?[^\/.]+$

参见 proof

解释

--------------------------------------------------------------------------------
  ^                        the beginning of the string
--------------------------------------------------------------------------------
  http                     'http'
--------------------------------------------------------------------------------
  s?                       's' (optional (matching the most amount
                           possible))
--------------------------------------------------------------------------------
  :                        ':'
--------------------------------------------------------------------------------
  \/                       '/'
--------------------------------------------------------------------------------
  \/                       '/'
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    .*                       any character except \n (0 or more times
                             (matching the most amount possible))
--------------------------------------------------------------------------------
    \/                       '/'
--------------------------------------------------------------------------------
  )?                       end of grouping
--------------------------------------------------------------------------------
  [^\/.]+                  any character except: '\/', '.' (1 or more
                           times (matching the most amount possible))
--------------------------------------------------------------------------------
  $                        before an optional \n, and the end of the
                           string