使用C＃的HTML正则表达式 [英] Regex for HTML using C#

问题描述

我正在尝试使用C＃在html标签之间获取文本BlaBla，但我在两个\s正则表达式上出现错误。

文本可以有任何角色。



正则表达式：

匹配m = Regex.Match（文件， < h1 class = \header \>< span class = \itemprop \itemprop = \name \> （？+）\s * \s * LT; /跨度>中）; 
 

示例html：

 <   h1    < span class =code-attribute> class   =  header >  <   span     class   =  itemprop     itemprop   = < span class =code-keyword> name > 文字I_need <  < span class =code-leadattribute> / span  >  
 <   span     class   =   nobr > （<   a     href   =  / year / 2013 /？ref_ = tt_ov_inf   >  2013 <   / a  > ）<   / span  >  

谢谢！

解决方案

它归结为字符串处理：\ s是正则表达式中需要的字符串，但它被解释为由C＃编译器控制代码。替换为\\\\，它应该没问题：

匹配m = Regex.Match（文件， < h1 class = \header \>< span class = \itemprop \itemprop = \name \ > \\s * \\s * LT（+。）; /跨度> 中）; 
 

（你可以在字符串前加上'和''''字符，但是你必须加倍所有引号，并删除它们之前的反斜杠......）

I''m trying to get the text "BlaBla" between the html tags with C#, but I get an error on the two \s regex''s.
The text can have any character.

Regex:

Match m = Regex.Match(file, "<h1 class=\"header\"> <span class=\"itemprop\" itemprop=\"name\">\s*(.+?)\s*</span>");

Example html:

<h1 class="header"> <span class="itemprop" itemprop="name">Text I_need</span> 
            <span class="nobr">(<a href="/year/2013/?ref_=tt_ov_inf" >2013</a>)</span>

Thanks!

解决方案

It''s down to string processing: "\s" is the string you need in the regex, but it is being interpreted as a control code by the C# compiler. Replace it with "\\s" and it should be fine:

Match m = Regex.Match(file, "<h1 class=\"header\"> <span class=\"itemprop\" itemprop=\"name\">\\s*(.+?)\\s*</span>");

(You could prefix the string with and ''@'' character, but then you would have to double up all the quotes, and remove the backslashes before them...)

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