① ASP.NET过滤html标签的几种常用方法
没有几种.
原理就是删掉正则匹配到的html标签
至于删除用repalce还是remove我觉得没那么重要了就..
html标签的正则,网上抄的不知道对不对:
"<(.[^>]*)>"
② C# 堆文本编辑器里面的内容html标签进行过滤，除了a标签以外全部过滤
用正则表抄达式来袭做
引用 using System.Text.RegularExpressions;
Match result;
result = Regex.Match(文本, @"(?<value><a>.+?<\/a>)");
string getstring = string.Empty;
while (result.Success)
{
getstring += result.Groups["value"].Value;
result = result.NextMatch();
}
getstring就是内容了
③ asp.net如何过滤掉html代码
Asp.net中如何过滤html,js,css代码
以下为引用的内容：
#region/// 过滤html,js,css代码
/// <summary>
/// 过滤html,js,css代码
/// </summary>
/// <param name="html">参数传入</param>
/// <returns></returns>
public static string CheckStr(string html)
{
System.Text.RegularExpressions.Regex regex1 = new System.Text.RegularExpressions.Regex(@"<script[\s\S]+</script *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
System.Text.RegularExpressions.Regex regex2 = new System.Text.RegularExpressions.Regex(@" href *= *[\s\S]*script *:", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
System.Text.RegularExpressions.Regex regex3 = new System.Text.RegularExpressions.Regex(@" no[\s\S]*=", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
System.Text.RegularExpressions.Regex regex4 = new System.Text.RegularExpressions.Regex(@"<iframe[\s\S]+</iframe *>", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
System.Text.RegularExpressions.Regex regex5 = new System.Text.RegularExpressions.Regex(@"<frameset[\s\S]+</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);
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 = html.Replace(" ", "");
html = html.Replace("</strong>", "");
html = html.Replace("<strong>", "");
return html;
}
#endregion
#region /// 过滤p /p代码
/// <summary>
/// 过滤p /p代码
/// </summary>
/// <param name="html">参数传入</param>
/// <returns></returns>
public static string InputStr(string html)
{
html = html.Replace(@"\<img[^\>]+\>", "");
html = html.Replace(@"<p>", "");
html = html.Replace(@"</p>", "");
return html;
}
#endregion
④ asp.net过滤html代码
^// 这一行在页面顶加入 validateRequest=false
public static string NoHTML(string Htmlstring) //替换HTML标记
{ //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, @"&(|#169);", "\xa9", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"&#(\d+);", "", RegexOptions.IgnoreCase);
Htmlstring = Regex.Replace(Htmlstring, @"<img[^>]*>;", "", RegexOptions.IgnoreCase);
Htmlstring.Replace("<", "");
Htmlstring.Replace(">", "");
Htmlstring.Replace("\r\n", "");
Htmlstring = HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();
return Htmlstring;
}
这个方法调用一下就可以的！
⑤ 过滤所有html标签的几种方法
<!DOCTYPE html>
<html lang="en">
<head>
属<meta charset="UTF-8">
<title>test</title>
<script type="text/javascript">
window.onload = function() {
var oTxt1 = document.getElementById('txt1');
var oTxt2 = document.getElementById('txt2');
var test = document.getElementById('test');
test.onclick = function() {
var reg = /<[^<>]+>/g;
oTxt2.value = oTxt1.value.replace(reg, '');
};
}
</script>
</head>
<body>
<div>
<input type="text" id="txt1">
<input type="text" id="txt2">
</div>
<div><button id="test">测试</button></div>
</body>
</html>
⑥ asp.net 过滤html代码
默认是禁止包含有HTML标签的POST请求,设置专
ValidateRequest="false"
就可以了属
比如:
<%@
Page
Language="C#"
AutoEventWireup="true"
CodeBehind="Default.aspx.cs"
Inherits=YourNameSpace.YourClassName"
ValidateRequest="false"
%>
⑦ asp.net中在 web.config配置什么可以 过滤HTML标签
在web.config中增加一条<pages validateRequest="false"/>禁用请求验证，这样在提交带有html代码数据的时候就不会报错。
⑧ asp过滤所有的html代码函数
应该是可以过掉所有的标签的.大小写已经忽略,全局已经打开,多行也打开着,看了一下你的匹配专式也是正确的属啊.你过不掉的可能是因为中间有空间,而[^>]表示的是不包含>的所有字符.怎么会过滤不掉呢?
"<[\/]?\w+(\s+\w+\=[\"]?\w+[\"]?)*[\/]?>"
这样试试如何
⑨ asp.net 怎么过滤html标记
前台我放一个label和button 给button加了个点击事件在后台导入using System.Text.RegularExpressions;命名空间具体代码 protected void Button1_Click(object sender, EventArgs e) { string a = "<html><br><hr>ffwe<h1>32e4</ht>"; string strip = StripHTML(a); this.Label1.Text = strip;} public static string StripHTML(string strHtml) { string[] aryReg ={ @"<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);", @"&(|#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", ""); strOutput.Replace(" ", " "); return strOutput; } 经测试可用 最终效果
⑩ asp.net中如何把一个字符串中的所有html代码去掉成为文本模式
用正则清掉html标签就行了，给你个函内数，容using System.Text.RegularExpressions;
public static string StripHT(string strHtml)
{
Regex regex=new Regex("<.+?>",RegexOptions.IgnoreCase);
string strOutput=regex.Replace(strHtml,"");
return strOutput;
}