正则表达式，去除所有HTML标签
浏览数：29 /
时间：2015年06月09日
protected string str = "<table><tr><td>sdasasdsdd</td></tr></table><br><p>sds</p><img id=‘img1‘ src=‘http://www.baidu.com/img/baidu_logo.gif‘ width=‘100‘ height=‘50‘ alt=‘‘>aaassss<br><img src=‘http://www.baidu.com/img/baidu_logo.gif‘ width=‘100‘ height=‘50‘ alt=‘‘> 说是道 "; protected void Page_Load(object sender, EventArgs e) { //string regexstr = @"<[^>]*>"; //去除所有的标签 //@"<script[^>]*?>.*?</script>" //去除所有脚本，中间部分也删除 // string regexstr = @"<img[^>]*>"; //去除图片的正则 // string regexstr = @"<(?!br).*?>"; //去除所有标签，只剩br // string regexstr = @"<table[^>]*?>.*?</table>"; //去除table里面的所有内容 string regexstr = @"<(?!img|br|p|/p).*?>"; //去除所有标签，只剩img,br,p str = Regex.Replace(str, regexstr, string.Empty, RegexOptions.IgnoreCase); }
ASP.NET 去除所有HTML标记 < type="text/javascript">function StorePage(){d=document;t=d.selection?(d.selection.type!=‘None‘?d.selection.createRange().text:‘‘):(d.getSelection?d.getSelection():‘‘);void(keyit=window.open(‘http://www.365key.com/storeit.aspx?t=‘+escape(d.title)+‘&u=‘+escape(d.location.href)+‘&c=‘+escape(t),‘keyit‘,‘scrollbars=no,width=475,height=575,left=75,top=20,status=no,resizable=yes‘));keyit.focus();}
注意:需要先using System.Text.RegularExpressions;
/**//// <summary> /// 去除HTML标记 /// </summary> /// <param name="NoHTML">包括HTML的源码 </param> /// <returns>已经去除后的文字</returns> public static string NoHTML(string Htmlstring) { //删除脚本 Htmlstring = Regex.Replace(Htmlstring,@"<script[^>]*?>.*?</script>","",RegexOptions.IgnoreCase); //删除HTML Htmlstring = Regex.Replace(Htmlstring,@"<(.[^>]*)>","",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"([\r\n])[\s]+","",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"-->","",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"<!--.*","",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(quot|#34);","\"",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(amp|#38);","&",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(lt|#60);","<",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(gt|#62);",">",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(nbsp|#160);"," ",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(iexcl|#161);","\xa1",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(cent|#162);","\xa2",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(pound|#163);","\xa3",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring,@"&(copy|#169);","\xa9",RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, @"&#(\d+);","",RegexOptions.IgnoreCase); Htmlstring.Replace("<",""); Htmlstring.Replace(">",""); Htmlstring.Replace("\r\n",""); Htmlstring=HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim(); return Htmlstring; } /**////提取HTML代码中文字的C#函数 /// <summary> /// 去除HTML标记 /// </summary> /// <param name="strHtml">包括HTML的源码 </param> /// <returns>已经去除后的文字</returns> using System; using System.Text.RegularExpressions; public class StripHTMLTest{ public static void Main(){ string s=StripHTML("<HTML><HEAD><TITLE>中国石龙信息平台</TITLE></HEAD><BODY>faddfs龙信息平台</BODY></HTML>"); Console.WriteLine(s); } public static string StripHTML(string strHtml){ string [] aryReg ={ @"<script[^>]*?>.*?</script>", @"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""‘])(http://www.cnblogs.com/xchit/admin/file://[%22%22‘tbnr]%7c[%5e/7])*?\7|\w+)|.{0})|\s)*?(\/\s*)?>", @"([\r\n])[\s]+", @"&(quot|#34);", @"&(amp|#38);", @"&(lt|#60);", @"&(gt|#62);", @"&(nbsp|#160);", @"&(iexcl|#161);", @"&(cent|#162);", @"&(pound|#163);", @"&(copy|#169);", @"&#(\d+);", @"-->", @"<!--.*\n" }; string [] aryRep = { "", "", "", "\"", "&", "<", ">", " ", "\xa1",//chr(161), "\xa2",//chr(162), "\xa3",//chr(163), "\xa9",//chr(169), "", "\r\n", "" }; string newReg =aryReg[0]; string strOutput=strHtml; for(int i = 0;i<aryReg.Length;i++){ Regex regex = new Regex(aryReg[i],RegexOptions.IgnoreCase); strOutput = regex.Replace(strOutput,aryRep[i]); } strOutput.Replace("<",""); strOutput.Replace(">",""); strOutput.Replace("\r\n",""); return strOutput; } }
写一个静态方法
移除HTML标签#region 移除HTML标签
/**//// <summary> /// 移除HTML标签 /// </summary> /// <param name="HTMLStr">HTMLStr</param> public static string ParseTags(string HTMLStr) { return System.Text.RegularExpressions.Regex.Replace(HTMLStr, "<[^>]*>", ""); } #endregion 取出文本中的图片地址#region 取出文本中的图片地址 /**//// <summary> /// 取出文本中的图片地址 /// </summary> /// <param name="HTMLStr">HTMLStr</param> public static string GetImgUrl(string HTMLStr) { string str = string.Empty; string sPattern = @"^<img\s+[^>]*>"; Regex r = new Regex(@"<img\s+[^>]*\s*src\s*=\s*([‘]?)(?<url>\S+)‘?[^>]*>", RegexOptions.Compiled); Match m = r.Match(HTMLStr.ToLower()); if (m.Success) str = m.Result("${url}"); return str; } #endregion
原文链接 ：http://blog.csdn.net/gulijiang2008/article/details/7190281
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