正则表达式筛选html代码 ?
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悬赏园豆：20
[待解决问题]
<pre><div>sadfasdfasd</div></pre>
<pre><div class="video_1_left"> </pre>
<pre> <UL></pre>
<pre> <li><a href="/news/12718.html" target="_blank">标题sadfasdfasdfasdf</a></li></pre>
<pre><li><a href="/news/12710.html" target="_blank">标题asdfasdfasdf</a></li></pre>
<pre><li><a href="/news/12729.html" target="_blank">v2sdfasdf</a></li></pre>
<pre><li><a href="/news/12728.html" target="_blank">标题sdfsadf</a></li> </pre>
<pre> </UL> </pre>
<pre></div> </pre>
<pre></pre>
<pre><div class="video_1_right"> </pre>
<pre> <UL> </pre>
<pre><li><a href="/news/12705.html" target="_blank">标题xxxfasdfasdfx</a></li></pre>
<pre><li><a href="/news/12737.html" target="_blank">标题xxxdfasdfasax</a></li> </pre>
<pre></UL> </pre>
<pre></div></pre>
<pre><div>sadfasdfasd</div></pre>
<pre>我只要<li>中href属性跟<li>要显示的那些文字</pre>
<pre>举个例子：<li><a href="/news/12737.html" target="_blank">标题xxxdfasdfasax</a></li></pre>
<pre>我只要"news/12737.html“跟标题xxxdfasdfasax</pre>
问题补充：
<div>sadfasdfasd</div> <div class="video_1_left"> <UL> <li><a href="/news/12718.html" target="_blank">标题sadfasdfasdfasdf</a></li> <li><a href="/news/12710.html" target="_blank">标题asdfasdfasdf</a></li> <li><a href="/news/12729.html" target="_blank">v2sdfasdf</a></li> <li><a href="/news/12728.html" target="_blank">标题sdfsadf</a></li> </UL> </div> <div class="video_1_right"> <UL> <li><a href="/news/12705.html" target="_blank">标题xxxfasdfasdfx</a></li> <li><a href="/news/12737.html" target="_blank">标题xxxdfasdfasax</a></li> </UL> </div> <div>sadfasdfasd</div>
所有回答(3)
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Regex reg = new Regex(@"<li><a href=""(?<url>[^""]*)"" target=""_blank"">(?<title>[^<]*)</a></li>");
string html = "<div>sadfasdfasd</div> <div class=\"video_1_left\"> <UL> <li><a href=\"/news/12718.html\" target=\"_blank\">标题sadfasdfasdfasdf</a></li> <li><a href=\"/news/12710.html\" target=\"_blank\">标题asdfasdfasdf</a></li> <li><a href=\"/news/12729.html\" target=\"_blank\">v2sdfasdf</a></li> <li><a href=\"/news/12728.html\" target=\"_blank\">标题sdfsadf</a></li> </UL> </div> <div class=\"video_1_right\"> <UL> <li><a href=\"/news/12705.html\" target=\"_blank\">标题xxxfasdfasdfx</a></li> <li><a href=\"/news/12737.html\" target=\"_blank\">标题xxxdfasdfasax</a></li> </UL> </div> <div>sadfasdfasd</div> ";
foreach (Match m in reg.Matches(html))
{
Console.WriteLine(m.Groups["url"].Value + "\t" + m.Groups["title"].Value);
}
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http://www.cnblogs.com/xingshao/archive/2009/10/27/1590806.html
类似的问题、通用的解决思路。上面的例子是一篇页面截取天气数据的例子。更改一下正则。就可以分析其他类型的数据。
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如果li和a之间有\r\n这样的换行符，你这样就取不到值
