using System;
using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.Text.RegularExpressions;public partial class Ceshi : System.Web.UI.Page
{ protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { string str = Regex.Replace("AAA\nBBB\nCCC<br>", "^", "开始=>", RegexOptions.Multiline | RegexOptions.IgnoreCase);//多行模式，每行前面加 '开始=>' Response.Write(str); string s = @"<html><title>title\\标题</title><head><script>alert('JS脚本');</script>head头部</head><body><table><tr><td><!--注释的东西-->TD的内容1</td><td>TD的内容2</td></table><div style='width:100px;'>DIV的内容</div><span>span内容1</spaN><spAN>span内容2</SPAN></body></html>"; Response.Write(ClearHTMLTags(s)); } } public static string ClearHTMLTags(string HTML) { string[] Regexs ={ @"<script[^>]*?>.*?</script>", @"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""'])(\\[""'tbnr]|[^\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[] Replaces ={
"", "", "", "\"", "&", "<", ">", " ", "\xa1", //chr(161), "\xa2", //chr(162), "\xa3", //chr(163), "\xa9", //chr(169), "", "\r\n", "" };string s = HTML;
for (int i = 0; i < Regexs.Length; i++) { s = new Regex(Regexs[i], RegexOptions.Multiline | RegexOptions.IgnoreCase).Replace(s, Replaces[i]); } s.Replace("<", ""); s.Replace(">", ""); s.Replace("\r\n", ""); return s; }}