使用XSLT来减少XML输出 [英] use XSLT to pare down XML output
本文介绍了使用XSLT来减少XML输出的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何使用XSLT,只选择一些xml标签从我的输入xml到我的输出XML?
示例输入:
How can I using XSLT, select only some xml tags from my input xml to my output XML? example input:
<Country value="USA">
<State value="KY>
<City value="Hebron" />
<City value="Lexington" />
<City value="Owensboro" />
<City value="Jonesville" />
</State>
<State value="OH">
<City value="Cincinnati" />
<City value="Columbus" />
<City value="Cleveland" />
<City value="Jonesville" />
</State>
<State value="IN" >
<City value="Indianapolis" />
</State>
</Country>
只需复制Hebron和Cincinnati?
So, keep the Country/State tags in place and only copy Hebron and Cincinnati?
预期输出:
<Country value="USA">
<State value="KY>
<City value="Hebron" />
</State>
<State value="OH">
<City value="Cincinnati" />
</State>
</Country>
推荐答案
以下样式表:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()" />
</xsl:copy>
</xsl:template>
<xsl:template match="City[not(@value='Hebron' or @value='Cincinnati')]" />
</xsl:stylesheet>
在此输入:
<Country value="USA">
<State value="KY">
<City value="Hebron" />
<City value="Lexington" />
<City value="Owensboro" />
</State>
<State value="OH">
<City value="Cincinnati" />
<City value="Columbus" />
<City value="Cleveland" />
</State>
</Country>
产生以下结果:
<Country value="USA">
<State value="KY">
<City value="Hebron" />
</State>
<State value="OH">
<City value="Cincinnati" />
</State>
</Country>
This stylesheet uses the identity transform to copy all but the undesired nodes to the output unchanged.
另一个例子:身份变换 =nofollow
Another example
您可能还想删除任何没有所需城市的州
元素。此样式表:
You might also want to remove any State
element that does not have a desired city. This stylesheet:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="City[not(@value='Hebron' or @value='Cincinnati')]"/>
<xsl:template
match="State[not(City[@value='Hebron' or @value='Cincinnati'])]"/>
</xsl:stylesheet>
应用于此输入:
/ p>
<Country value="USA">
<State value="KY">
<City value="Hebron" />
<City value="Lexington" />
<City value="Owensboro" />
</State>
<State value="OH">
<City value="Cincinnati" />
<City value="Columbus" />
<City value="Cleveland" />
</State>
<State value="MO">
<City value="St. Louis" />
</State>
</Country>
产生:
<Country value="USA">
<State value="KY">
<City value="Hebron" />
</State>
<State value="OH">
<City value="Cincinnati" />
</State>
</Country>
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