折叠 for each 不起作用

我很难用xsl和xml为每个文件进行折叠。这是我的xml文件：

<a>
<b>
    <c name="namec1">
        <d name="named1">value1</d>
        <d name="named2">value2</d>
        <d name="named3">value3</d>
        <d name="named4">value4</d>
    </c>
    <c name="namec1">
        <d name="named1">value5</d>
        <d name="named2">value6</d>
        <d name="named3">value7</d>
        <d name="named4">value8</d>
    </c>
    <c name="namec1">
        <d name="named1">value9</d>
        <d name="named2">value10</d>
        <d name="named3">value11</d>
        <d name="named4">value12</d>
    </c>
</b>
</a>

这就是我想要的：

namec: [namec1, namec2, namec3]
named: [value1, value5, value9]
named: [value2, value6, value10]
named: [value3, value7, value11]
named: [value4, value8, value12]

这是我的xsl代码：

<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<xsl:variable name="index" select="." />
<html>
<body>
namec: [
    <xsl:for-each select="a/b">    
        <xsl:choose>
            <xsl:when test="position()=1">
                <xsl:value-of select='c/@name'/>
            </xsl:when>
            <xsl:otherwise>
                , <xsl:value-of select='d/@name'/>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:for-each>
    ]   
    <xsl:for-each select="a/b">
        <xsl:if test="position()=1">
            <xsl:for-each select="c/d">
                named: <xsl:value-of select="@name" />,    
                data: [
                <xsl:for-each select="$index/a/b/c">
                    <xsl:value-of select="d" />,
                </xsl:for-each>
                ]
            </xsl:for-each>
        </xsl:if>
    </xsl:for-each>
</body>
</html>
</xsl:template>
</xsl:stylesheet>

每个的第一个都可以但我真的不明白为什么第二次崩溃对每个人都不起作用我已经试过了，但我是新手。。。这可能吗？提前感谢！

我试图将这个答案应用于我的案例，它确实起到了作用：

xml:

<table>
  <tr name="date1">
    <td name="var1">A11</td>
    <td name="var2">A12</td>
    <td name="var3">A13</td>
    <td name="var4">A14</td>
    <td name="var5">A15</td>
  </tr>
  <tr name="date2">
    <td name="var1">A21</td>
    <td name="var2">A22</td>
    <td name="var3">A23</td>
    <td name="var4">A24</td>
    <td name="var5">A25</td>
  </tr>
  <tr name="date3">
    <td name="var1">A31</td>
    <td name="var2">A32</td>
    <td name="var3">A33</td>
    <td name="var4">A34</td>
    <td name="var5">A35</td>
  </tr>
</table>

和xsl:

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes"/>
<xsl:template match="/">
categories: [
<xsl:for-each select="table/tr">    
        <xsl:choose>
            <xsl:when test="position()=1">
                '<xsl:value-of select='@name'/>'
            </xsl:when>
            <xsl:otherwise>
                , '<xsl:value-of select='@name'/>'
            </xsl:otherwise>
        </xsl:choose>
    </xsl:for-each>
    ]   

 <xsl:for-each select="table/tr[1]/td">
  <xsl:variable name="vRowPos" select="position()"/>
   <xsl:for-each select="/table/tr">
    <xsl:variable name="vColPos" select="position()"/>
    <xsl:choose>
        <xsl:when test="position()=1">
            name: '<xsl:value-of select="/table/tr[$vColPos]/td[$vRowPos]/@name" />',
            data: ['<xsl:value-of select="/table/tr[$vColPos]/td[$vRowPos]" />'
        </xsl:when>
        <xsl:otherwise>
            , '<xsl:value-of select="/table/tr[$vColPos]/td[$vRowPos]" />'
        </xsl:otherwise>
    </xsl:choose>
   </xsl:for-each>]
 </xsl:for-each>
 </xsl:template>
 </xsl:stylesheet>

它还给我这个：

categories: ['date1', 'date2', 'date3']   
name: 'var1',
data: ['A11', 'A21', 'A31']
name: 'var2',
data: ['A12', 'A22', 'A32']
name: 'var3',
data: ['A13', 'A23', 'A33']
name: 'var4',
data: ['A14', 'A24', 'A34']
name: 'var5',
data: ['A15', 'A25', 'A35']

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