使用CDATA进行xml，xsl转换 [英] xml, xsl transformation with CDATA
问题描述
我是xsl xml转换的新手.现在，我有一个包含以下信息的xml文件:
I am new to xsl xml transformation. For now, I have an xml file that contains the following information:
<bio>
<published>Tue, 7 Oct 2008 14:47:26 +0000</published>
<summary><![CDATA[
Dream Theater is an American <a
href="http://www.last.fm/tag/progressive%20metal" class="bbcode_tag"
rel="tag">progressive metal</a> band formed in 1985 under the name
"<a href="http://www.last.fm/music/Majesty"
class="bbcode_artist">Majesty</a>" by <a
href="http://www.last.fm/music/John+Myung"
class="bbcode_artist">John Myung</a>,
<a href="http://www.last.fm/music/John+Petrucci"
class="bbcode_artist">John Petrucci</a>
]]>
</summary>
</bio>
我的xsl文件包含以下内容:
And my xsl file contains this:
<h3><xsl:value-of select="lfm/artist/bio/published"/></h3>
<p>
<xsl:value-of select="lfm/artist/bio/summary" disable-output-escaping="yes"/>
</p>
<html>
<body>
<xsl:value-of select="lfm/artist/bio/content"/>
</body>
</html>
我现在想要做的是从<summary><[CDATA[]]></summary>中提取标记结构的数据，并像下面的示例一样在浏览器中显示它:
What I'm trying to do now is to extract the tag-structured data out of the <summary><[CDATA[]]></summary> and show it in the browser as in this example:
<a href="http://www.last.fm/tag/progressive%20metal" class="bbcode_tag" rel="tag">progressive metal</a>
<a href="http://www.last.fm/music/Majesty" class="bbcode_artist">Majesty</a>
<a href="http://www.last.fm/music/John+Myung" class="bbcode_artist">John Myung</a>
<a href="http://www.last.fm/music/John+Petrucci" class="bbcode_artist">John Petrucci</a>
现在，当我打开xml页面时，它会显示所有CDATA内容，即使带有那些html标记...我想让这些标记以html形式正确地完成其工作.
For now when I open the xml page, it shows all the CDATA content, even with those html tags... I want to get those tags to do their job properly in html form.
对不起，我的描述很糟糕.希望你们能明白我的意思...
sorry for the terrible description..hope you guys can get what i mean here...
推荐答案
CDATA只是文本节点的一部分，而其中的标记似乎是一维文本(标记被严重破坏)，并且在不调用扩展功能的情况下无法完成此操作(在XSLT 1.0和XSLT 2.0中).
The CDATA is just (a part of) a text node and what seems like markup inside it is one-dimensional text (badly destroyed markup) and this cannot be accomplished (in XSLT 1.0 and XSLT 2.0) without calling an extension function.
<p><xsl:copy-of select="my:parse(lfm/artist/bio/summary)"></p>
在XSLT 3.0中，可能会有一个新的标准函数 更新:
这里是一个完整的代码示例，假设您在.NET中使用XslCompiledTransform :
Here is a complete code example, assuming you are using XslCompiledTransform in .NET:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:msxsl="urn:schemas-microsoft-com:xslt"
xmlns:my="my:my">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="summary/text()">
<xsl:copy-of select="my:parse(.)/*/*"/>
</xsl:template>
<msxsl:script language="c#" implements-prefix="my">
public XmlDocument parse(string text)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml("<t>"+text+"</t>");
return doc;
}
</msxsl:script>
</xsl:stylesheet>
将此转换应用于提供的XML文档:
<bio>
<published>Tue, 7 Oct 2008 14:47:26 +0000</published>
<summary><![CDATA[Dream Theater is an American <a href="http://www.last.fm/tag/progressive%20metal" class="bbcode_tag" rel="tag">progressive metal</a> band formed in 1985 under the name "<a href="http://www.last.fm/music/Majesty" class="bbcode_artist">Majesty</a>" by <a href="http://www.last.fm/music/John+Myung" class="bbcode_artist">John Myung</a>, <a href="http://www.last.fm/music/John+Petrucci" class="bbcode_artist">John Petrucci</a>]]>
</summary>
</bio>
产生了所需的正确结果(CDATA被重新构造的标记代替):
<bio>
<published>Tue, 7 Oct 2008 14:47:26 +0000</published>
<summary>
<a href="http://www.last.fm/tag/progressive%20metal" class="bbcode_tag" rel="tag">progressive metal</a>
<a href="http://www.last.fm/music/Majesty" class="bbcode_artist">Majesty</a>
<a href="http://www.last.fm/music/John+Myung" class="bbcode_artist">John Myung</a>
<a href="http://www.last.fm/music/John+Petrucci" class="bbcode_artist">John Petrucci</a>
</summary>
</bio>
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