正则表达式需要帮助 [英] Regex help required

问题描述

我试图替换< br /> 中的两个或更多个（例如< br />< br / >< br />< / code>标记以及两个< br />< br /> / p>



I am trying to replace two or more occurences of <br/> (like <br/><br/><br/>) tags together with two <br/><br/> with the following pattern

Pattern brTagPattern = Pattern.compile("(<\\s*br\\s*/\\s*>\\s*){2,}", 
     Pattern.CASE_INSENSITIVE | Pattern.DOTALL);

但有些情况下'< br /> < br /> '标签有一个空格，它们被替换为4 < br /> 标签，这实际上应该是只需要2个标签即可。

But there are some cases where '<br/> <br/>' tags come with a space and they get replaced with 4 <br/> tags which was actually supposed to be replaced with just 2 tags.

我可以做些什么来忽略两个或三个（标签间）空格？

What can i do to ignore 2 or 3(few) spaces that come in between the tags ?

推荐答案

可能不是您想要听到的答案，但您不应该试图用正则表达式来解析XML / HTML。很多事情可能会出错 - 使用专门用于此类数据的解析库是一个更好的主意，这也将完全绕过您遇到的问题。

Probably not the answer you want to hear, but it is general wisdom that you should not attempt to parse XML/HTML with regular expressions. So many things can go wrong -- it's a much better idea to use a parsing library specifically meant for such data, which will also completely bypass the issue you're having.

如果您确定您的HTML已经过时，请查看 JAXB 。形成了XML，或者如果HTML可能是杂乱无章的（就像大多数真实世界的HTML），你应该尝试像 TagSoup 。

Take a look at JAXB if you are certain your HTML is well-formed XML, or if the HTML is likely to be messy and incompliant (like most real-world HTML) you should try something like TagSoup.

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