使用 Xpath 选择每个节点和兄弟节点(直到该节点下一次出现)组合 [英] Selecting every node and siblings (until next occurrence of that node) combinations with Xpath

问题描述

我有以下 html 结构:

<ol>一个问题</ol><div>答案</div><div>答案</div><ol>另一个问题</ol><div>答案</div><ol>问题#3</ol>...</文档>

我想取

节点和后面的
节点，直到下一个

节点，所以我可以将它们分组在一个 xml 中，如

<话题><问题>... </问题><回答>... </answer></topic>...</vce>

到目前为止，我有以下内容

<文档><内容名称=问题"><xsl:value-of select="."/></内容><内容名称=答案"><xsl:for-eachselect="./following-sibling::div !!! 这里需要代码!!!><xsl:value-of select="."/></xsl:for-each></内容></文档></xsl:for-each>

我能很好地回答问题，但我在回答问题时遇到了麻烦.我曾尝试使用以下、前置、不、for-each-group、... .有很多类似的问题，但不会像这样使用这种格式退出，因为我的 html 文件中并没有真正的父级结构.

解决方案

试试看:

XSLT 1.0

<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/><xsl:key name="answers" match="div" use="generate-id(preceding-sibling::ol[1])"/><xsl:template match="/document"><vce><xsl:for-each select="ol"><话题><问题><xsl:value-of select="."/></问题><xsl:for-each select="key('answers', generate-id())"><回答><xsl:value-of select="."/></回答></xsl:for-each></topic></xsl:for-each></vce></xsl:模板></xsl:stylesheet>

应用于以下测试输入时:

XML

<ol>问题A</ol><div>答案 A1</div><div>答案 A2</div><ol>问题B</ol><div>回答 B1</div><ol>问题C</ol><div>回答 C1</div><div>回答 C2</div></文档>

结果将是:

I have the following html structure:

<document>
<ol>a question</ol>
<div>answer</div>
<div>answer</div>
<ol>another question</ol>
<div>answer</div>
<ol>question #3</ol>
...
</document>

I would like to take the <ol> nodes and the following <div> nodes until the next <ol> node, so I can group them in an xml like

<vce>
  <topic>
   <question> ... </question>
   <answer> ... </answer>
  </topic>
  ...
</vce>

So far I have the following

<xsl:for-each select="//body/ol">
  <document>

    <content name="question">
      <xsl:value-of select="." />
    </content>

    <content name="answer">
      <xsl:for-each
        select="./following-sibling::div !!! need code here !!!>
        <xsl:value-of select="." />
      </xsl:for-each>
    </content>
  </document>
</xsl:for-each>

I get the questions just fine but I'm having trouble with the answers. I have tried working with following, preceding, not, for-each-group, ... . There are many similar questions but not quit like this with this format because I don't really have a child-parent structure in my html file.

解决方案

Try it this way:

XSLT 1.0

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

<xsl:key name="answers" match="div" use="generate-id(preceding-sibling::ol[1])" />

<xsl:template match="/document">
    <vce>
        <xsl:for-each select="ol">
            <topic>
                <question>
                    <xsl:value-of select="." />
                </question>
                <xsl:for-each select="key('answers', generate-id())">
                    <answer>
                        <xsl:value-of select="." />
                    </answer>
                </xsl:for-each>
            </topic>
        </xsl:for-each>
    </vce>
</xsl:template>

</xsl:stylesheet>

when applied to the following test input:

XML

<document>
   <ol>question A</ol>
   <div>answer A1</div>
   <div>answer A2</div>
   <ol>question B</ol>
   <div>answer B1</div>
   <ol>question C</ol>
   <div>answer C1</div>
   <div>answer C2</div>
</document>

the result will be:

<?xml version="1.0" encoding="UTF-8"?>
<vce>
   <topic>
      <question>question A</question>
      <answer>answer A1</answer>
      <answer>answer A2</answer>
   </topic>
   <topic>
      <question>question B</question>
      <answer>answer B1</answer>
   </topic>
   <topic>
      <question>question C</question>
      <answer>answer C1</answer>
      <answer>answer C2</answer>
   </topic>
</vce>

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