小编Joh*_*ler的帖子

我正在阅读一本电子书,它有以下xml代码.

<?xml version="1.0"?>
<?xml-stylesheet href="sonnet.xsl" type="text/xsl"?>
<?cocoon-process type="xslt"?>
<!DOCTYPE sonnet [
  <!ELEMENT sonnet (auth:author, title, lines)>
  <!ATTLIST sonnet public-domain CDATA "yes"
      type (Shakespearean | Petrarchan) "Shakespearean">
  <!ELEMENT auth:author (last-name,first-name,nationality,
      year-of-birth?,year-of-death?)>
  <!ELEMENT last-name (#PCDATA)>
  <!ELEMENT first-name (#PCDATA)>
  <!ELEMENT nationality (#PCDATA)>
  <!ELEMENT year-of-birth (#PCDATA)>
  <!ELEMENT year-of-death (#PCDATA)>
  <!ELEMENT title (#PCDATA)>
  <!ELEMENT lines (line,line,line,line,
      line,line,line,line,line,line,line,
      line,line,line)>
  <!ELEMENT line (#PCDATA)>
]>
<!-- Default sonnet type is Shakespearean, the other allowable -->
<!-- type is "Petrarchan." -->
<sonnet type="Shakespearean">
  <auth:author xmlns:auth="http://www.authors.com/">
    <last-name>Shakespeare</last-name>
    <first-name>William</first-name>
    <nationality>British</nationality>
    <year-of-birth>1564</year-of-birth> …

好吧,我有这个xml

<roots>
<root>
    <name>first</name>
    <item type='test'><something>A</something></item>
    <item type='test'><something>B</something></item>
    <item type='test'><something>C</something></item>
    <item type='test'><something>A</something></item>
    <item type='other'><something>A</something></item>
    <item type='test'><something>B</something></item>
    <item type='other'><something>D</something></item>

</root>
<root>
<name>second</name>
    <item type='test'><something>E</something></item>
    <item type='test'><something>B</something></item>
    <item type='test'><something>F</something></item>
    <item type='test'><something>A</something></item>
    <item type='other'><something>A</something></item>
    <item type='test'><something>B</something></item>
    <item type='other'><something>D</something></item>

</root>

</roots>

现在我需要获得每个根节点的唯一值到目前为止我有

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output indent="yes" method="text"/>
  <xsl:key name="item-by-value" match="something" use="."/>
  <xsl:key name="rootkey" match="root" use="name"/>

  <xsl:template match="/">
    <xsl:for-each select="key('rootkey','second')">
      <xsl:for-each select="item/something">
        <xsl:if test="generate-id() = generate-id(key('item-by-value', normalize-space(.)))">
          <xsl:value-of select="."/>
        </xsl:if>
      </xsl:for-each> 
    </xsl:for-each>
  </xsl:template>

</xsl:stylesheet>

如果我使用"First"作为获得第一根的关键我得到一个好的结果ABCD

如果我使用"秒"我怎么只得到EF但我需要结果是ABDFE