我在xml和xslt 中有一个查询
下面是输入XML
<?xml version="1.0" encoding="UTF-8"?>
<Employer>
<Employees>
<EmployeesDetails>van ind 26%</EmployeesDetails>
</Employees>
<Employees>
<EmployeesDetails>van ind</EmployeesDetails>
</Employees>
</Employer>
以上是我的输入文件
下面是我的输出文件
<?xml version="1.0" encoding="UTF-8"?>
<Employer>
<Employees>
<Names>van</Names>
<Location>ind</Location>
<Weather>26</Weather>
</Employees>
<Employees>
<Names>van</Names>
<Location>ind</Location>
<Weather>100</Weather>
</Employees>
</Employer>
如何将下面的XSLT应用于上面的XML输入?
I。此XSLT2.0转换:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="xs">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:template match="/*">
<Employer>
<xsl:apply-templates/>
</Employer>
</xsl:template>
<xsl:template match="Employees">
<xsl:variable name="vNames" select="tokenize(Names, ' ')"/>
<xsl:variable name="vLoc" select="tokenize(Location, ' ')"/>
<xsl:variable name="vWeather"
select="tokenize(translate(Weather, '%', ' '), ' ')"/>
<xsl:for-each select="$vNames">
<xsl:variable name="vPos" select="position()" as="xs:integer"/>
<Employees>
<Names><xsl:sequence select="."/></Names>
<Location>
<xsl:sequence select="(lower-case($vLoc[$vPos]), 'Unknown')[1]"/>
</Location>
<Weather>
<xsl:sequence select="($vWeather[$vPos], 100)[1]"/>
</Weather>
</Employees>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
应用于所提供的XML文档时:
<Employer>
<Employees>
<Names>vel bel sel tel mel</Names>
<Location>IND AUS ENG CAL JAP</Location>
<Weather>26%</Weather>
</Employees>
<Employees>
<Names>asd sadl asdsel tdddel dmdel</Names>
<Location>IND AUS ENG CAL JAP</Location>
</Employees>
</Employer>
生成所需的正确结果:
<Employer>
<Employees>
<Names>vel</Names>
<Location>ind</Location>
<Weather>26</Weather>
</Employees>
<Employees>
<Names>bel</Names>
<Location>aus</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>sel</Names>
<Location>eng</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>tel</Names>
<Location>cal</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>mel</Names>
<Location>jap</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>asd</Names>
<Location>ind</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>sadl</Names>
<Location>aus</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>asdsel</Names>
<Location>eng</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>tdddel</Names>
<Location>cal</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>dmdel</Names>
<Location>jap</Location>
<Weather>100</Weather>
</Employees>
</Employer>
注意:
我做出了以下合理的假设:
您实际上想要的是
100
,而不是100%
。您希望处理所有
Employees
,而不仅仅是该元素的第一次出现。
我还为任何丢失的位置添加了一个默认值,以防提供的位置数量小于提供的名称数量。
II。XSLT 1.0解决方案:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:ext="http://exslt.org/common"
xmlns:my="my:my" exclude-result-prefixes="ext my">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<my:defaults>
<L>Unknown</L>
<W>100</W>
</my:defaults>
<xsl:variable name="vUpper" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>
<xsl:variable name="vLower" select="'abcdefghijklmnopqrstuvwxyz'"/>
<xsl:variable name="vDefaults" select="document('')/*/my:defaults"/>
<xsl:template match="/*">
<Employer>
<xsl:apply-templates/>
</Employer>
</xsl:template>
<xsl:template match="Employees">
<xsl:variable name="vrtfNames">
<xsl:apply-templates select="Names"/>
</xsl:variable>
<xsl:variable name="vNames" select="ext:node-set($vrtfNames)/*"/>
<xsl:variable name="vrtfLocs">
<xsl:apply-templates select="Location"/>
</xsl:variable>
<xsl:variable name="vrtfWeather">
<xsl:apply-templates select="Weather"/>
</xsl:variable>
<xsl:apply-templates select="$vNames">
<xsl:with-param name="pLocs" select="ext:node-set($vrtfLocs)/*"/>
<xsl:with-param name="pWeather" select="ext:node-set($vrtfWeather)/*"/>
</xsl:apply-templates>
</xsl:template>
<xsl:template match="s" priority="3">
<xsl:param name="pLocs"/>
<xsl:param name="pWeather"/>
<xsl:variable name="vPos" select="position()"/>
<Employees>
<Names><xsl:value-of select="."/></Names>
<Location>
<xsl:value-of select=
"translate($pLocs[position() = $vPos]
| $vDefaults[not($pLocs[position() = $vPos])]/L,
$vUpper, $vLower)"/>
</Location>
<Weather>
<xsl:value-of select=
"$pWeather[position() = $vPos]
| $vDefaults[not($pWeather[position() = $vPos])]/W"/>
</Weather>
</Employees>
</xsl:template>
<xsl:template match="Weather">
<xsl:call-template name="tokenize">
<xsl:with-param name="pText" select="translate(., '%', ' ')"/>
</xsl:call-template>
</xsl:template>
<xsl:template match="Employees/*/text()" name="tokenize">
<xsl:param name="pText" select="."/>
<xsl:variable name="vText" select="normalize-space($pText)"/>
<xsl:if test="$vText">
<s>
<xsl:value-of select="substring-before(concat($vText, ' '), ' ')"/>
</s>
<xsl:call-template name="tokenize">
<xsl:with-param name="pText" select="substring-after($vText, ' ')"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
当此转换应用于所提供的XML文档(如上)时,同样会产生所需的正确结果:
<Employer>
<Employees>
<Names>vel</Names>
<Location>ind</Location>
<Weather>26</Weather>
</Employees>
<Employees>
<Names>bel</Names>
<Location>aus</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>sel</Names>
<Location>eng</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>tel</Names>
<Location>cal</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>mel</Names>
<Location>jap</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>asd</Names>
<Location>ind</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>sadl</Names>
<Location>aus</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>asdsel</Names>
<Location>eng</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>tdddel</Names>
<Location>cal</Location>
<Weather>100</Weather>
</Employees>
<Employees>
<Names>dmdel</Names>
<Location>jap</Location>
<Weather>100</Weather>
</Employees>
</Employer>
注意:
实现了与XSLT2.0转换基本相同的逻辑。
由于XPath 1.0没有
tokenize
或lower-case()
函数,并且在XPath 1.0数据模型中没有序列的概念,因此这些函数(分别)使用标记化模板、使用translate()
函数转换为小写以及使用包含天气和位置默认值的元素来实现。
您的问题在某些关键领域很模糊。例如,您似乎指出,如果<Employees>
节点集没有<weather>
节点,那么它应该得到一个值为100%的节点;也就是说,您的预期输出似乎不一致地应用了该逻辑。所需的<Location>
结果节点将从大写转换为小写。此外,您的输出似乎完全忽略了源XML中的第二个<Employees>
节点集。
假设一下,这里是一个使用EXSLT的XSLT1.0解决方案。如果这不是你想要的,请更新你的问题,使其更具体,我会尽力适应。
当此XSLT:
<?xml version="1.0"?>
<xsl:stylesheet
xmlns:exsl="http://exslt.org/common"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
exclude-result-prefixes="exsl"
version="1.0">
<xsl:output omit-xml-declaration="no" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="Employees">
<xsl:variable name="vNames">
<xsl:call-template name="tokenize">
<xsl:with-param name="text" select="Names/text()"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="vLocations">
<xsl:call-template name="tokenize">
<xsl:with-param name="text" select="Location/text()"/>
</xsl:call-template>
</xsl:variable>
<xsl:apply-templates select="exsl:node-set($vNames)/token">
<xsl:with-param name="pLocation"
select="exsl:node-set($vLocations)/token"/>
<xsl:with-param name="pWeather" select="Weather"/>
</xsl:apply-templates>
</xsl:template>
<xsl:template match="token">
<xsl:param name="pLocation"/>
<xsl:param name="pWeather"/>
<xsl:variable name="vPosition" select="position()"/>
<Employees>
<Names>
<xsl:value-of select="."/>
</Names>
<Location>
<xsl:value-of select="translate($pLocation[$vPosition],
'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz')"/>
</Location>
<xsl:choose>
<xsl:when test="$pWeather != ''">
<xsl:apply-templates select="$pWeather"/>
</xsl:when>
<xsl:otherwise>
<Weather>100%</Weather>
</xsl:otherwise>
</xsl:choose>
</Employees>
</xsl:template>
<xsl:template name="tokenize">
<xsl:param name="text"/>
<xsl:param name="delimiter" select="' '"/>
<xsl:choose>
<xsl:when test="contains($text,$delimiter)">
<xsl:element name="token">
<xsl:value-of select="substring-before($text,$delimiter)"/>
</xsl:element>
<xsl:call-template name="tokenize">
<xsl:with-param name="text"
select="substring-after($text,$delimiter)"/>
<xsl:with-param name="delimiter" select="$delimiter"/>
</xsl:call-template>
</xsl:when>
<xsl:when test="$text">
<xsl:element name="token">
<xsl:value-of select="$text"/>
</xsl:element>
</xsl:when>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
。。。应用于此XML:
<?xml version="1.0"?>
<Employer>
<Employees>
<Names>vel bel sel tel mel</Names>
<Location>IND AUS ENG CAL JAP</Location>
<Weather>26%</Weather>
</Employees>
<Employees>
<Names>asd sadl asdsel tdddel dmdel</Names>
<Location>IND AUS ENG CAL JAP</Location>
</Employees>
</Employer>
。。。产生所需的(?)结果:
<?xml version="1.0" encoding="UTF-8"?>
<Employer>
<Employees>
<Names>vel</Names>
<Location>ind</Location>
<Weather>26%</Weather>
</Employees>
<Employees>
<Names>bel</Names>
<Location>aus</Location>
<Weather>26%</Weather>
</Employees>
<Employees>
<Names>sel</Names>
<Location>eng</Location>
<Weather>26%</Weather>
</Employees>
<Employees>
<Names>tel</Names>
<Location>cal</Location>
<Weather>26%</Weather>
</Employees>
<Employees>
<Names>mel</Names>
<Location>jap</Location>
<Weather>26%</Weather>
</Employees>
<Employees>
<Names>asd</Names>
<Location>ind</Location>
<Weather>100%</Weather>
</Employees>
<Employees>
<Names>sadl</Names>
<Location>aus</Location>
<Weather>100%</Weather>
</Employees>
<Employees>
<Names>asdsel</Names>
<Location>eng</Location>
<Weather>100%</Weather>
</Employees>
<Employees>
<Names>tdddel</Names>
<Location>cal</Location>
<Weather>100%</Weather>
</Employees>
<Employees>
<Names>dmdel</Names>
<Location>jap</Location>
<Weather>100%</Weather>
</Employees>
</Employer>
解释:
- 第一个模板-标识模板-按原样复制所有元素和属性
- 第二个模板与
<Employee>
元素匹配,它运行一个特殊的tokenize
模板,其任务是将空间分隔的字符串拆分为结果树片段。为了方便起见,这些片段被保存到变量中 - 第三个模板匹配名为
token
的所有元素。这些是由EXSLT生成的,它将结果树片段转换为由<token>
元素组成的节点集。对于其中的每一个,我们提取必要的元素值来创建<Names>
和<Location>
。该模板还包含确定<weather>
元素需要哪个值所必需的逻辑