/// <summary>
/// 清除文本中的HTML标记（保存换行符）
/// </summary>
/// <param name="str">待处理的字符串</param>
/// <returns>string</returns>
public static string ClearHtml2(this string HTML)
{
if (String.IsNullOrWhiteSpace(HTML))
{
return(String.Empty);
}
string[] Regexs =
{
@"</?([a-z]+)([^<]*)>",
@"&(quot|#34);",
@"&(amp|#38);",
@"&(lt|#60);",
@"&(gt|#62);",
@"&(nbsp|#160);",
@"&(iexcl|#161);",
@"&(cent|#162);",
@"&(pound|#163);",
@"&(copy|#169);",
@"&#(\d+);",
@"-->",
@"<!--.*\n",
@"\[(\d+)?\]",
@"\[E\:(\d+)?\|(\d+)?\|(\d+)?\]"
};
string[] Replaces =
{
String.Empty,
"\"",
"&",
"<",
">",
" ",
"\xa1", //chr(161),
"\xa2", //chr(162),
"\xa3", //chr(163),
"\xa9", //chr(169),
String.Empty,
"\r\n",
String.Empty,
string.Empty,
string.Empty
};
string s = HTML;
for (int i = 0, len = Regexs.Length; i < len; i++)
{
s = RegExt.CreateFromCache(Regexs[i], RegexOptions.Multiline | RegexOptions.IgnoreCase).Replace(s, Replaces[i]);
}
s.Replace("<", String.Empty);
s.Replace(">", String.Empty);
return(s);
}
/// <summary>
/// 清除空格
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static string TrimEmpty(this string s)
{
if (!string.IsNullOrWhiteSpace(s))
{
var reg = RegExt.CreateFromCache("\\s+", System.Text.RegularExpressions.RegexOptions.IgnoreCase);
return(s = reg.Replace(s, string.Empty));
}
return(s);
}
/// <summary>
/// 是否是字母
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
public static bool IsLetter(this string content)
{
Regex regex = RegExt.CreateFromCache(@"[^A-Za-z]+");
if (regex.IsMatch(content))
{
return(false);
}
return(true);
}
/// <summary>
/// 清除HTML标签中的Style属性
/// </summary>
/// <param name="HTML"></param>
/// <returns></returns>
public static string ClearHtmlStyle(this string HTML)
{
if (string.IsNullOrWhiteSpace(HTML))
{
return(string.Empty);
}
var re = RegExt.CreateFromCache("style\\=\".+?\"|style\\='.+?'", RegexOptions.IgnoreCase | RegexOptions.Multiline).Replace(HTML, string.Empty);
return(re);
}
public static string ClearHtml3(this string HTML)
{
if (string.IsNullOrWhiteSpace(HTML))
{
return(string.Empty);
}
var reg = RegExt.CreateFromCache(@"(?:\>)\w+(?:\<)", RegexOptions.Multiline | RegexOptions.IgnoreCase);
var matches = reg.Matches(HTML);
if (matches != null && matches.GetEnumerator().MoveNext())
{
var s = matches.OfType <Match>().ToArray().Select(i => i.Value);
HTML = string.Join("", s);
}
HTML = HTML.Replace("<", string.Empty).Replace(">", string.Empty);
return(HTML);
}
/// <summary>
/// 清除文本中的HTML标记
/// </summary>
/// <param name="str">待处理的字符串</param>
/// <returns>string</returns>
public static string ClearHtml(this string HTML)
{
if (String.IsNullOrWhiteSpace(HTML))
{
return(String.Empty);
}
var regexdicts = new Dictionary <string, string>();
regexdicts.Add(@"</?([a-z]+)([^<]*)>", String.Empty);
regexdicts.Add(@"([\r\n])[\s]+", String.Empty);
regexdicts.Add(@"&(quot|#34);", "\"");
regexdicts.Add(@"&(amp|#38);", "&");
regexdicts.Add(@"&(lt|#60);", "<");
regexdicts.Add(@"&(gt|#62);", ">");
regexdicts.Add(@"&(nbsp|#160);", " ");
regexdicts.Add(@"&(iexcl|#161);", "\xa1");
regexdicts.Add(@"&(cent|#162);", "\xa2");
regexdicts.Add(@"&(pound|#163);", "\xa3");
regexdicts.Add(@"&(copy|#169);", "\xa9");
regexdicts.Add(@"&#(\d+);", String.Empty);
regexdicts.Add(@"<!--.*-->", String.Empty);
regexdicts.Add("<img[^>]*>", String.Empty);
string s = HTML;
foreach (var key in regexdicts.Keys)
{
s = RegExt.CreateFromCache(key, RegexOptions.IgnoreCase | RegexOptions.Multiline).Replace(s, regexdicts[key]);
}
s.Replace("<", String.Empty);
s.Replace(">", String.Empty);
s.Replace("\r\n", String.Empty);
return(s);
}