正则表达式求助！！！急急急急急

Question

    <div id="div_page_roll1" style="display:none">&nbsp;&nbsp; <span class="page-Article">1</span> <a href="http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm" class="page-Article">2</a> <a href="http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm" class="nextpage">下一页</a>&nbsp;&nbsp;</div>
    <div id="div_currpage">&nbsp;&nbsp; <span class="page-Article">1</span> <a href="http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm" class="page-Article">2</a><a href="http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm" class="nextpage">下一页</a>&nbsp;&nbsp;</div>如上所示的一段html代码，我要用正则表达式取到
<div id="div_currpage">里面的2。我现在这样写：
<a href="(?<RESULT>http\://news.ihaet.com/.*?)">(?<PAGER>\d+?)</a>，但是这样<div id="div_page_roll1" style="display:none">里面的2也被匹配到了，不知道应该怎么写？注:必须是正则表达式，不能用程序控制！谢谢

Answer 1

string result = Regex.Match(html,@"(?<=<div id=""div_currpage""((?!<div|</a).)+?<a[^>]+>)[^<]+").Value;

Answer 2

string result = Regex.Match(html,@"(?<=<div id=""div_currpage""((?!<div|</a).)+?<a[^>]+>)[^<]+").Value;

Answer 3

怎么不行了？你测试了么？    private static void TestRegex04()
    {
        string html = @" <div id=""div_page_roll1"" style=""display:none"">&nbsp;&nbsp; <span class=""page-Article"">1</span> <a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""page-Article"">2</a> <a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""nextpage"">下一页</a>&nbsp;&nbsp;</div>
    <div id=""div_currpage"">&nbsp;&nbsp; <span class=""page-Article"">1</span> <a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""page-Article"">2</a><a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""nextpage"">下一页</a>&nbsp;&nbsp;</div>
";
        string result = Regex.Match(html, @"(?<=<div id=""div_currpage""((?!<div|</a).)+?<a[^>]+>)[^<]+").Value;
        Console.WriteLine(result);
    }输出2

Answer 4

我用的RegExBuilder测试的，没用代码测试

Answer 5

(?<=<div id="div_currpage"((?!<div|</a).)+?<a[^>]+>)[^<]+如果用工具，基本的尝试也该知道吧转义字符去掉。你测试完不还是写代码用？

Answer 6

 private static void TestRegex04()
    {
        string html = @" <div id=""div_page_roll1"" style=""display:none"">&nbsp;&nbsp; <span class=""page-Article"">1</span> <a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""page-Article"">2</a> <a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""nextpage"">下一页</a>&nbsp;&nbsp;</div>
    <div id=""div_currpage"">&nbsp;&nbsp; <span class=""page-Article"">1</span> <a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""page-Article"">2</a><a href=""http://news.ihaet.com/shuhua/2010-09/01/c_12505062_2.htm"" class=""nextpage"">下一页</a>&nbsp;&nbsp;</div>
";
        string result = Regex.Match(html, @"(?<=<div id=""div_currpage""((?!<div|</a).)+?<a[^>]+>)[^<]+").Value;
        Console.WriteLine(result);
    }