.net正则婚配a标签

.net正则匹配a标签

2009-08-26 16:00:51|  分类： Asp.Net |字号 订阅//c#通过正则匹配html中的a标签 的方法public string matchA(string teststr)    {        StringBuilder sb = new StringBuilder();        //关键就是这个里面的这则表达式        Regex reg = new Regex(@"<\s*a\shref=*[^>]*>([^<]|<(?!/a))*<\s*/a\s*>");         MatchCollection match = reg.Matches(teststr);         foreach (Match var in match)         {             if (var != null)             {                 sb.Append(Server.HtmlEncode(var.Value));                 sb.Append("<br />");             }         }         return sb.ToString();    }//这个是测试方法获取网易首页的a标签所有信息public void test(){        string temp=string.Empty;        WebRequest webReq = WebRequest.Create(" http://www.163.com");        WebResponse webRes = webReq.GetResponse();        Stream resStream = webRes.GetResponseStream();        StreamReader sr = new StreamReader(resStream, Encoding.Default);        StringBuilder sb = new StringBuilder();        while ((temp = sr.ReadLine()) != null)        {            sb.Append(temp);        }        webRes.Close();        sr.Close();       //打印出所有匹配信息       Response.Write(matchA(sb.ToString()));   }