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我正在尝试使用 XSLT 将 HTML 文档转换为纯文本文档。但是，我对 XSLT 还是很陌生，我不明白为什么我的转换输出与我想要的输出不同。

我的输入 HTML 文档：

<html>
<body>
  <h1>Heading 1</h1>
  <p class="first">First paragraph.</p>
  <p class="para">Regular paragraph 1.</p>
  <p class="para">Regular paragraph 2.</p>
  <p class="para">Regular paragraph 3.</p>
  <p class="last">Last paragraph.</p>
  <h2 class="someclass">Heading 2</h2>
  <p class="first">First paragraph 2.</p>
  <p class="para">Regular paragraph 4.</p>
  <p class="para">Regular paragraph 5.</p>
  <p class="para">Regular paragraph 6.</p>
</body>
</html>

我想要的输出（纯文本）：

Heading (h1): Heading 1
Para (first): First paragraph.
Para (regular): Regular paragraph 1.
Para (regular): Regular paragraph 2.
Para (regular): Regular paragraph 3.
Para (last): Last paragraph.
Heading (someclass): Heading 2
Para (first): First paragraph 2.
Para (regular): Regular paragraph 4.
Para (regular): Regular paragraph 5.
Para (regular): Regular paragraph 6.

我的 XSLT：

<?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet version="1.0"
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

    <xsl:template match="/">

        <xsl:for-each select="//p[@class='first']">
            Para (first): <xsl:value-of select="."/>
        </xsl:for-each>

        <xsl:for-each select="//p[@class='para']">
            Para (regular): <xsl:value-of select="."/>
        </xsl:for-each>

        <xsl:for-each select="//p[@class='last']">
            Para (last): <xsl:value-of select="."/>
        </xsl:for-each>

        <xsl:for-each select="//h1">
            Heading (h1): <xsl:value-of select="."/>
        </xsl:for-each>

        <xsl:for-each select="//h2[@class='someclass']">
            Heading (someclass): <xsl:value-of select="."/>
        </xsl:for-each>

    </xsl:template>
</xsl:stylesheet>

应用上述 XSLT 输入 HTML 文档的结果：

Para (first): First paragraph.
Para (first): First paragraph 2.
Para (regular): Regular paragraph 1.
Para (regular): Regular paragraph 2.
Para (regular): Regular paragraph 3.
Para (regular): Regular paragraph 4.
Para (regular): Regular paragraph 5.
Para (regular): Regular paragraph 6.
Para (last): Last paragraph.
Heading (h1): Heading 1
Heading (someclass): Heading 2

我想要做的是将 HTML 文档中的标签内容放入纯文本中，以便内容出现在 HTML 文档中。相反，这种转换所做的是将与相同 XPATH 匹配的所有元素一个接一个地放置。

我怀疑该解决方案正在使用apply-templates元素，但是我不明白它是如何工作的，因此在上面的示例中使用它时遇到了麻烦。

4

1 回答 1

1

这种转换完全按照您的要求进行 - 首先处理所有p[@class='first']元素，然后处理所有元素p[@class='para']等等。相反，您应该为每种不同的情况定义单独的模板并用于apply-templates分离哪些元素的问题是正确的从如何处理每一个问题来处理。

<xsl:template match="/">
  <!-- process all the child elements of body in document order -->
  <xsl:apply-templates select="html/body/*" />
</xsl:template>

<!-- if the element we're processing is a <p class="first"> ... -->
<xsl:template match="p[@class='first']">
    Para (first): <xsl:value-of select="."/>
</xsl:template>

<!-- etc. etc. -->
<xsl:template match="p[@class='para']">
    Para (regular): <xsl:value-of select="."/>
</xsl:template>

<xsl:template match="p[@class='last']">
    Para (last): <xsl:value-of select="."/>
</xsl:template>

<xsl:template match="h1">
    Heading (h1): <xsl:value-of select="."/>
</xsl:template>

<xsl:template match="h2[@class='someclass']">
    Heading (someclass): <xsl:value-of select="."/>
</xsl:template>
于 2014-04-24T15:20:13.263 回答