Question

我在ASP.NET网站上使用Regex时遇到问题。我想从网站源获取两个正则表达式的计数，使用webclient下载源。

我想获得一个正则表达式的计数，在tmz.com网站上搜索。

基本上我有一个文本文件，每行都有关键字。我放了2位艺术家，它应该去每一行，制作像artist1 + regex + keyword + regex + artist2这样的正则表达式。想法是查看我的关键字和艺术家的计数（搜索次数）。

这是我的函数的源代码。

 int counts = 0;
    string line = "";
    StreamReader read = new StreamReader(@"C:\words.txt");
    WebClient web = new WebClient();
    string content = web.DownloadString("http://www.tmz.com/search/news/" + artist1 + " " + artist2);
    while ((line = read.ReadLine()) != null)
    {

            string pattern = artist1 + "[a-zA-Z0-9\\s]{1,10}" + line + "[a-zA-Z0-9\\s]{1,10}" + artist2;
            MatchCollection matches = Regex.Matches(pattern, content);
            counts += matches.Count;
            string pattern2 = artist2 + "[a-zA-Z0-9\\s]{1,10}" + line + "[a-zA-Z0-9\\s]{1,10}" + artist1;
            MatchCollection matches1 = Regex.Matches(pattern2, content);
            counts += matches1.Count;
    }
    read.Close();
    return counts;

但是我收到了这个错误： 描述：执行当前Web请求期间发生了未处理的异常。请查看堆栈跟踪以获取有关错误及其源自代码的详细信息。

我得到的红线（错误是这一行）： 第54行：MatchCollection匹配= Regex.Matches（模式，内容）;

确切的例外：

System.ArgumentException was unhandled by user code
  Message=parsing "<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:meebo="http://www.meebo.com/" xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#">
<head>
        <script type="text/javascript">var _sf_startpt=(new Date()).getTime()</script>
    <title>Search bowwow tyra - news - Page 1 | TMZ.com </title>
    <meta name="robots" content="all"/>
    <meta name="description" content="Celebrity Gossip and Entertainment News, Covering Celebrity News and Hollywood Rumors. Get All The Latest Gossip at TMZ - Thirty Mile Zone" />
    <meta name="generator" content="Crowd Fusion 2.0-enterprise" />
    <!-- Site Verification -->
    <meta name="google-site-verification" content="UUmtbUBf3djgPpCeLefe_PbFsOc6JGxfXmHzpjFLAEQ" />
    <meta name="verify-v1" content="Wtpd0N6FufoE2XqopQJoTjWV6Co/Mny9BTaswPJbPPA=" />
    <meta name="msvalidate.01" content="AFEB17971BCF30779AEA662782EF26F4" />
    <meta name="y_..." - Too many )'s.
  Source=System
  StackTrace:
       at System.Text.RegularExpressions.RegexParser.ScanRegex()
       at System.Text.RegularExpressions.RegexParser.Parse(String re, RegexOptions op)
       at System.Text.RegularExpressions.Regex..ctor(String pattern, RegexOptions options, Boolean useCache)
       at System.Text.RegularExpressions.Regex.Matches(String input, String pattern)
       at _Default.tmz(String artist1, String artist2) in c:\Users\icebox19\Documents\Visual Studio 2010\WebSites\WebSite3\Default.aspx.cs:line 52
       at _Default.Button1_Click(Object sender, EventArgs e) in c:\Users\icebox19\Documents\Visual Studio 2010\WebSites\WebSite3\Default.aspx.cs:line 89
       at System.Web.UI.WebControls.Button.OnClick(EventArgs e)
       at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
       at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  InnerException:

PS：我使用的是ASP.NET网站，而不是c＃独立应用程序，这是一个网页。

Answer 1

这是因为你使用了错误的参数。它应该是Regex.Matches（INPUT，PATTERN）。

ASP.NET中的正则表达式异常

1 个答案: