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提取HTML代码中文字的C#函数（HTML to TEXT）

2008-07-03 20:57 465 查看

方法1：

///提取HTML代码中文字的C#函数

///   <summary>

///   去除HTML标记

///   </summary>

///   <param   name="strHtml">包括HTML的源码   </param>

///   <returns>已经去除后的文字</returns>

using   System;

using   System.Text.RegularExpressions;

public   class   StripHTMLTest{

public   static   void   Main(){

string   s=StripHTML("<HTML><HEAD><TITLE>中国石龙信息平台</TITLE></HEAD><BODY>faddfs龙信息平台</BODY></HTML>");

Console.WriteLine(s);

}

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);",

@"&(copy|#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","");

return   strOutput;

}

}

方法2：

public static string DelHTML(string Htmlstring)//将HTML去除

{

#region

//删除脚本

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"<script[^>]*?>.*?</script>","",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

//删除HTML

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"<(.[^>]*)>","",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"([/r/n])[/s]+","",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"-->","",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"<!--.*","",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

//Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"<A>.*</A>","");

//Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"<[a-zA-Z]*=/.[a-zA-Z]*/?[a-zA-Z]+=/d&/w=%[a-zA-Z]*|[A-Z0-9]","");

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(quot|#34);","/"",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(amp|#38);","&",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(lt|#60);","<",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(gt|#62);",">",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(nbsp|#160);"," ",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(iexcl|#161);","/xa1",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring = System.Text.RegularExpressions.Regex.Replace(Htmlstring,@"&(cent|#162);","/xa2",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(pound|#163);","/xa3",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring,@"&(copy|#169);","/xa9",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring =System.Text.RegularExpressions. Regex.Replace(Htmlstring, @"&#(/d+);","",System.Text.RegularExpressions.RegexOptions.IgnoreCase);

Htmlstring.Replace("<","");

Htmlstring.Replace(">","");

Htmlstring.Replace("/r/n","");

//Htmlstring=HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();

#endregion

return Htmlstring;

}

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