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  • C# 过滤html标签

     public static string checkStr(string html)
            {
                System.Text.RegularExpressions.Regex regex1 = new System.Text.RegularExpressions.Regex(@"<script[sS]+</script *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex2 = new System.Text.RegularExpressions.Regex(@" href *= *[sS]*script *:", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex3 = new System.Text.RegularExpressions.Regex(@" no[sS]*=", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex4 = new System.Text.RegularExpressions.Regex(@"<iframe[sS]+</iframe *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex5 = new System.Text.RegularExpressions.Regex(@"<frameset[sS]+</frameset *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex6 = new System.Text.RegularExpressions.Regex(@"<img[^>]+>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex7 = new System.Text.RegularExpressions.Regex(@"</p>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex8 = new System.Text.RegularExpressions.Regex(@"<p>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex9 = new System.Text.RegularExpressions.Regex(@"<[^>]*>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                System.Text.RegularExpressions.Regex regex10 = new System.Text.RegularExpressions.Regex(@"[	
    
    s]", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
                html = regex1.Replace(html, ""); //过滤<script></script>标记 
                html = regex2.Replace(html, ""); //过滤href=javascript: (<A>) 属性 
                html = regex3.Replace(html, " _disibledevent="); //过滤其它控件的on...事件 
                html = regex4.Replace(html, ""); //过滤iframe 
                html = regex5.Replace(html, ""); //过滤frameset 
                html = regex6.Replace(html, ""); //过滤frameset 
                html = regex7.Replace(html, ""); //过滤frameset 
                html = regex8.Replace(html, ""); //过滤frameset 
                html = regex9.Replace(html, "");
                html = regex10.Replace(html, "");
                html = html.Replace(" ", "");
                html = html.Replace(" ", "");
                html = html.Replace("'", "''");    //转义单引号
                html = html.Replace("</strong>", "");
                html = html.Replace("<strong>", "");
                return html;
            } 
    

      

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  • 原文地址:https://www.cnblogs.com/qk2014/p/3731587.html
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