Question

我在a.txt文件中保存了一个HTML，看起来像这样。

<HTML> <HEAD>      <TITLE></TITLE> </HEAD> 
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">  <P STYLE="margin: 0"></P>  <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">UNITED STATES</P>  <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SECURITIES AND EXCHANGE COMMISSION</P>  <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">WASHINGTON, D.C. 20549</P>  
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>  <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>  <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>   
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse"> <TR STYLE="vertical-align: top">     <TD STYLE="width: 5%; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">[X]</FONT></TD>     <TD STYLE="width: 95%; padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</FONT></TD></TR> <TR STYLE="vertical-align: top">     
<TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"></TD>     
<TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR> <TR STYLE="vertical-align: top">     <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"></TD> 
<TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-size: 10pt">For the fiscal year ended <B><U>October 31, 2012</U></B></FONT></TD></TR> <TR STYLE="vertical-align: top">     <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"></TD>     <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR> <TR STYLE="vertical-align: top">     <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">[ ]</FONT></TD>     <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"><FONT STYLE="font-size: 10pt">TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</FONT></TD></TR> <TR STYLE="vertical-align: top">    
<TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"></TD>     <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt">&nbsp;</TD></TR> <TR STYLE="vertical-align: top">    
 <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt"></TD>     <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><FONT STYLE="font-size: 10pt">For the transition period from _________ to ________</FONT></TD></TR>

我需要保留Newline的文字。所有这些文本都合并为一行。怎么办呢？下面是我的C＃代码

string text = File.ReadAllText(@"C:\a.txt",Encoding.UTF8);
Regex regex = new Regex("<[^>]+>");
 text = regex.Replace(text, " ").Replace("(&#160;)+", Environment.NewLine).Replace("&#32;", "").Replace("&#8217;", "'").Replace("\r\n\r\n(\r\n)+", Environment.NewLine);
 text = HttpUtility.HtmlDecode(text);
  Console.WriteLine(text);

Answer 1

我永远不会使用regex to parse HTML，而是使用HtmlAgilityPack，你可以使用简单的XQuery / XPath做很多事情，例如：

        HtmlDocument doc = new HtmlDocument();
        doc.Load(@"C:\temp\stackoverflow\question23657841\question23657841\a.html");

        foreach (HtmlNode node in doc.DocumentNode.SelectNodes("//p"))
        {
            Console.WriteLine(node.InnerHtml);
        }

输出结果为：

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
&nbsp;

<b>&nbsp;</b>

只需将XQuery切换到//font即可得到：

[X]
ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the fiscal year ended <b><u>October 31, 2012</u></b>
[ ]
TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _________ to ________

Answer 2

为什么不逐行阅读文件File.ReadAllLines()只做那个

C＃将HTML转换为保留下一行的文本

2 个答案: