C#.Net过滤特殊字符通用类库方法
实现功能:删除特殊字符
过滤包括HTML,脚本,数据库关键字,特殊字符等关键词都可过滤掉
打开VS,直接复制粘贴到项目中就可使用
/// <summary> /// 过滤标记 /// </summary> /// <param name="NoHTML">包括HTML,脚本,数据库关键字,特殊字符的源码 </param> /// <returns>已经去除标记后的文字</returns> public string NoHTML(string Htmlstring) { if (Htmlstring == null) { return ""; } else { //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 = Regex.Replace(Htmlstring, "xp_cmdshell", "", RegexOptions.IgnoreCase); //删除与数据库相关的词 Htmlstring = Regex.Replace(Htmlstring, "select", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "insert", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "delete from", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "count''", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "drop table", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "truncate", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "asc", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "mid", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "char", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "xp_cmdshell", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "exec master", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "net localgroup administrators", "", RegexOptions.IgnoreCase); Htmlstring = Regex.Replace(Htmlstring, "and", "", RegexOptions.IgnoreCase); return Htmlstring; } }