我想比较两个xmls然后合并它们.例如：
myFile1.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<catalog>
<data>
<title>Title1</title>
<description>Description1</description>
<myid>1</myid>
</data>
<data>
<title>Title2</title>
<description>Description2</description>
<myid>2</myid>
</data>
</catalog>
myFile2.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<catalog>
<data>
<title>Title1</title>
<description>Description1</description>
<author>Author1</author>
<date>12/34/5678</date>
<myid>1</myid>
</data>
<data>
<author>Author2</author>
<date>87/65/4321</date>
<myid>2</myid>
</data>
</catalog>
期望的输出：
<?xml version="1.0" encoding="ISO-8859-1"?>
<catalog>
<data>
<title>Title1</title>
<description>Description1</description>
<myid>1</myid>
<author>Author1</author>
<date>12/34/5678</date>
</data>
<data>
<title>Title2</title>
<description>Description2</description>
<myid>2</myid>
<author>Author2</author>
<date>87/65/4321</date>
</data>
</catalog>
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:transform version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="ISO-8859-1" indent="yes"/>
<xsl:variable name="compare" select="'myFile1.xml'"/>
<xsl:variable name="with" select="'myFile2.xml'"/>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="*">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
<xsl:variable name="info1" select="document($compare)/catalog/data[myid=current()/myid]/."/>
<xsl:variable name="info2" select="document($with)/catalog/data[myid=current()/myid]/."/>
<xsl:for-each select="$info1/*">
<xsl:variable name="check1" select="name(current())"/>
<!--xsl:text>Current node1 : </xsl:text><xsl:value-of select="$check1"/-->
<xsl:for-each select="$info2/*">
<xsl:variable name="check2" select="name(current())"/>
<!--xsl:text>Current node2 : </xsl:text><xsl:value-of select="$check2"/-->
<xsl:if test="$check1!=$check2">
<xsl:copy-of select="."/>
</xsl:if>
</xsl:for-each>
</xsl:for-each>
</xsl:copy>
</xsl:template>
</xsl:transform>
请帮忙！
该解决方案完全没有循环或密钥.我只使用document()加载了一个文档,而另一个文档则作为源加载.简而言之,源文档中缺少一个元素,它是在加载的元素上获取的.更多可用的元素就是这个解决方案.请参阅底部以获得更一般的信息.
XSLT 1.0在Saxon-HE 9.2.1.1J上测试
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:variable name="catalog2" select="document('source_test2.xml')/catalog"/>
<xsl:template match="catalog">
<catalog>
<xsl:apply-templates select="data"/>
</catalog>
</xsl:template>
<xsl:template match="data">
<xsl:variable name="data2" select="$catalog2/data[myid=current()/myid]/."/>
<data>
<xsl:choose>
<xsl:when test="title">
<xsl:copy-of select="title"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$data2/title"/>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="description">
<xsl:copy-of select="description"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$data2/description"/>
</xsl:otherwise>
</xsl:choose>
<xsl:copy-of select="myid"/>
<xsl:choose>
<xsl:when test="author">
<xsl:copy-of select="author"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$data2/author"/>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="date">
<xsl:copy-of select="date"/>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$data2/date"/>
</xsl:otherwise>
</xsl:choose>
</data>
</xsl:template>
</xsl:stylesheet>
以下是一个更通用的解决方案.方法是一样的.对于每个数据,myFile2中存在且myFile1中缺少的元素将添加到结果树中,反之亦然.
XSLT 1.0在Saxon-B 9.0.0.4J上测试
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:variable name="catalog2" select="document('myFile2.xml')/catalog"/>
<xsl:template match="catalog">
<catalog>
<xsl:apply-templates select="data"/>
</catalog>
</xsl:template>
<xsl:template match="data">
<xsl:variable name="data1" select="."/>
<xsl:variable name="data2" select="$catalog2/data[myid=current()/myid]/."/>
<data>
<xsl:copy-of select="$data1/*"/>
<xsl:for-each select="$data2/*">
<xsl:variable name="element2" select="name(.)"/>
<xsl:if test="count($data1/*[name()=$element2])=0">
<xsl:copy-of select="."/>
</xsl:if>
</xsl:for-each>
</data>
</xsl:template>
</xsl:stylesheet>
