我需要将XML转换为另一个数据结构。 我收到如下的XML:
<results>
<resultset>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>730d Saloon</model.model>
<model.name>KM21</model.name>
</result>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>120i 3 doors</model.model>
<model.name>UA51</model.name>
</result>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>Z4 sDrive23i</model.model>
<model.name>LM31</model.name>
</result>
<result>
<name>Audi</name>
<code>AUDI</code>
<model.model>A4 SAL.3.0 Q SPT TIP 5SPD</model.model>
<model.name>8E2SFZ04</model.name>
</result>
<result>
<name>Audi</name>
<code>AUDI</code>
<model.model>A6 SAL. 2.5TDI SPORT MAN.6SP.</model.model>
<model.name>4B2BBC04</model.name>
</result>
<result>
<name>AUdi</name>
<code>AUDI</code>
<model.model>A8 4.2 QUATTRO 6-SPD TIP</model.model>
<model.name>4E201L04</model.name>
</result>
</resultset>
</results>
我需要它像这样:
<results>
<resultset>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>730d Saloon</model.model>
<model.name>KM21</model.name>
<model.model>120i 3 doors</model.model>
<model.name>UA51</model.name>
<model.model>Z4 sDrive23i</model.model>
<model.name>LM31</model.name>
</result>
<result>
<name>Audi</name>
<code>AUDI</code>
<model.model>A4 SAL.3.0 Q SPT TIP 5SPD</model.model>
<model.name>8E2SFZ04</model.name>
<model.model>A6 SAL. 2.5TDI SPORT MAN.6SP.</model.model>
<model.name>4B2BBC04</model.name>
<model.model>A8 4.2 QUATTRO 6-SPD TIP</model.model>
<model.name>4E201L04</model.name>
</result>
</resultset>
</results>
我花了很多时间来解决这个问题,但到目前为止还没有运气。 有谁知道如何解决这个问题?
答案 0 :(得分:1)
<?xml version="1.0" encoding="utf-8"?>
<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="groupName" match="//results/resultset/result" use="concat(name, code)" />
<xsl:template match="/">
<results>
<resultset>
<xsl:for-each select="//results/resultset/result[generate-id() = generate-id( key('groupName', concat(name, code)) [1] ) ]" >
<xsl:call-template name="group">
<xsl:with-param name="k1" select="name" />
<xsl:with-param name="k2" select="code" />
</xsl:call-template>
</xsl:for-each>
</resultset>
</results>
</xsl:template>
<xsl:template name="group">
<xsl:param name="k1" />
<xsl:param name="k2" />
<result>
<xsl:copy-of select="name" />
<xsl:copy-of select="code" />
<xsl:for-each select="//results/resultset/result[name = $k1][code = $k2]">
<xsl:copy-of select="model.model" />
<xsl:copy-of select="model.name" />
</xsl:for-each>
</result>
</xsl:template>
</xsl:stylesheet>
答案 1 :(得分:0)
我知道这是一个较老的问题,但我想提供一个答案,与接受的答案不同,它更短,更简单,使用常见的面向推送的设计模式,不需要带参数的模板,并且不会不要对树进行多次完整的遍历。
当这个XSLT:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output omit-xml-declaration="no" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:key name="kResultByNameCode" match="result" use="concat(name, '+', code)"/>
<xsl:template match="node()|@*">
<xsl:copy>
<xsl:apply-templates select="node()|@*"/>
</xsl:copy>
</xsl:template>
<xsl:template match="result[generate-id() = generate-id(key('kResultByNameCode', concat(name, '+', code))[1])]">
<xsl:copy>
<xsl:apply-templates select="name | code"/>
<xsl:apply-templates select="key('kResultByNameCode', concat(name, '+', code))/*[starts-with(name(), 'model')]"/>
</xsl:copy>
</xsl:template>
<xsl:template match="result"/>
</xsl:stylesheet>
...针对提供的XML运行:
<?xml version="1.0" encoding="UTF-8"?>
<results>
<resultset>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>730d Saloon</model.model>
<model.name>KM21</model.name>
</result>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>120i 3 doors</model.model>
<model.name>UA51</model.name>
</result>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>Z4 sDrive23i</model.model>
<model.name>LM31</model.name>
</result>
<result>
<name>Audi</name>
<code>AUDI</code>
<model.model>A4 SAL.3.0 Q SPT TIP 5SPD</model.model>
<model.name>8E2SFZ04</model.name>
</result>
<result>
<name>Audi</name>
<code>AUDI</code>
<model.model>A6 SAL. 2.5TDI SPORT MAN.6SP.</model.model>
<model.name>4B2BBC04</model.name>
</result>
<result>
<name>Audi</name>
<code>AUDI</code>
<model.model>A8 4.2 QUATTRO 6-SPD TIP</model.model>
<model.name>4E201L04</model.name>
</result>
</resultset>
</results>
...生成了想要的结果:
<results>
<resultset>
<result>
<name>BMW Cars</name>
<code>BMW Pkw</code>
<model.model>730d Saloon</model.model>
<model.name>KM21</model.name>
<model.model>120i 3 doors</model.model>
<model.name>UA51</model.name>
<model.model>Z4 sDrive23i</model.model>
<model.name>LM31</model.name>
</result>
<result>
<name>Audi</name>
<code>AUDI</code>
<model.model>A4 SAL.3.0 Q SPT TIP 5SPD</model.model>
<model.name>8E2SFZ04</model.name>
<model.model>A6 SAL. 2.5TDI SPORT MAN.6SP.</model.model>
<model.name>4B2BBC04</model.name>
<model.model>A8 4.2 QUATTRO 6-SPD TIP</model.model>
<model.name>4E201L04</model.name>
</result>
</resultset>
</results>
同样,@ Mike的答案没有任何内在错误,但这更易于维护,并且可以更充分地利用XSLT解析器的本机能力。