正则表达式 URL 匹配 [英] Regex URL Match

问题描述

我才真正开始学习如何使用正则表达式，我正在尝试创建一个来匹配网址.到目前为止，我有:

I just really started learning how to use regex's and i am trying to create one to match urls. So far i have:

(http://|https://|www|\w)+\.[\w]{2,4}[^\s]+

谁能给我一些关于它看起来如何的反馈或建议，或者给我指出更好的

can anyone give me some feedback or advice on how this looks, or maybe point me in a better

推荐答案

你写的正则表达式是一个好的开始，正则表达式的真正力量在于它可以非常......好吧......强大:)URL 的结构有很多差异，仍然被认为是可以的.

the regex you wrote is a good start, the true power of regex is that it can be very... well... powerful :) there are a lot of differences in the structure of URL that are still considered ok.

查阅正则表达式参考以了解更多信息并理解所有字符的含义.

consult a Regex Reference to learn more and understand the meaning of all the characters.

并且您可以通过访问像这个

这对于您需要的东西来说可能过于复杂，但这是一个写得很好的 URLmatching 正则表达式:^(((ht|f)tp(s?))\://)?(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk)(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\;\?\'\\\+&%\$#\=~_\-]+))*$

this may be overly complex for what you need but this is a well written regex for URLmatching: ^(((ht|f)tp(s?))\://)?(www.|[a-zA-Z].)[a-zA-Z0-9\-\.]+\.(com|edu|gov|mil|net|org|biz|info|name|museum|us|ca|uk)(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\;\?\'\\\+&%\$#\=~_\-]+))*$

顺便说一句，我使用这个在线 Regex Helper 来测试我的正则表达式字符串，而无需实际从代码运行它们.

on a side note i use this online Regex Helper to test my regex strings without the need to actually run them from the code.

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