我是 XSLT 的新手,并且对 XSLT 中的换行符有类似的要求以获取逗号分隔值,但是我需要执行以下操作
- 检查该值是否为单个字符串,例如 Apples,或者是否为逗号分隔列表,例如 Apples、Pears 等
- 如果它是逗号分隔列表,则检查列表是否具有特定值或值
- 如果值存在,那么做一些事情
- 如果它是单个字符串,例如 Apple 然后做一些事情
XSLT 2.0 如何实现这一点?
您可以标记列表。像这样的函数可能会完成这项工作(为了演示目的,嵌入到工作 XSLT 中):
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:my="NS:MY">
<xsl:function name="my:test">
<xsl:param name="string"/>
<xsl:variable name="tokens" select="tokenize(normalize-space($string),'\s*,\s*')"/>
<xsl:choose>
<xsl:when test="normalize-space($string)='Apples'">
Do something where we have a single "Apples"
</xsl:when>
<xsl:when test="normalize-space($string)='Pears'">
Do something where we have a single "Pears"
</xsl:when>
<xsl:when test="$tokens='Apples' and $tokens='Pears'">
There are Apples and Pears
</xsl:when>
<xsl:when test="$tokens='Apples'">
There are Apples in the list
</xsl:when>
<xsl:when test="$tokens='Pears'">
There are Pears in the list
</xsl:when>
<xsl:otherwise>
Didn't find what we're looking for
</xsl:otherwise>
</xsl:choose>
</xsl:function>
<xsl:template match="/">
<out>
<xsl:value-of select="my:test('Apples')"/>
<xsl:value-of select="my:test('Pears,Oranges')"/>
<xsl:value-of select="my:test(' Apples ,Pears,Oranges')"/>
<xsl:value-of select="my:test('Oranges , Bananas, Strawberries')"/>
</out>
</xsl:template>
</xsl:stylesheet>
您也可以使用正则表达式。
See the XPath documentation for what normalize-space()
and tokenize()
do. You might want to replace the bogus namespace "NS:MY" with something sensible.