我希望保留UserType标记的值，如果其当前设置为xslt中提到的默认值。它不起作用。
<FlatRateSMSConfiguration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="..\..\..\schema\FlatRateSMSConfig.xsd">
<Configuration id="default">
<SMSServiceDays>30</SMSServiceDays>
<SMSServiceCharge>100</SMSServiceCharge>
<MinimumBalance>200</MinimumBalance>
<ServiceClassMap>
<ServiceClass VoiceService="100" FlatRateService="200"/>
</ServiceClassMap>
<NoInputTimeout>3</NoInputTimeout>
<MaxTimeoutRetries>3</MaxTimeoutRetries>
<MaxInvalidRetries>3</MaxInvalidRetries>
<MainMenuDTMF>*</MainMenuDTMF>
<ConfirmDTMF>0</ConfirmDTMF>
<NegateDTMF>1</NegateDTMF>
<MnpDaId>122</MnpDaId>
<LtdDaId>233</LtdDaId>
<FlatRateDataServiceConfiguration>
<ServiceSpecificData>
<ServiceClassData dtmf="2" minimumBalance="80" promptId="USER_FRDS_MORE_DAYS_MSG" refillProfileId="E2" serviceClass="10" serviceDays="7" transactionAmount="26" transactionCurrency="EU2R" />
</ServiceSpecificData>
<UserType>SmartPhone Users 232</UserType>
</FlatRateDataServiceConfiguration>
</Configuration>
</FlatRateSMSConfiguration>
<?xml version="1.0"?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xalan="http://xml.apache.org/xalan">
<xsl:output method="xml" indent="yes" xalan:indent-amount="2" omit-xml-declaration="no"/>
<xsl:template match="FlatRateSMSConfiguration">
<FlatRateSMSConfiguration>
<xsl:attribute name="xsi:noNamespaceSchemaLocation"><xsl:value-of select="@xsi:noNamespaceSchemaLocation"/></xsl:attribute>
<xsl:for-each select="Configuration">
<xsl:element name="Configuration">
<xsl:attribute name="id"><xsl:value-of select="@id"/></xsl:attribute>
<xsl:copy-of select="SMSServiceDays"/>
<xsl:copy-of select="SMSServiceCharge"/>
<xsl:copy-of select="MinimumBalance"/>
<xsl:copy-of select="ServiceClassMap"/>
<xsl:copy-of select="NoInputTimeout"/>
<xsl:copy-of select="MaxTimeoutRetries"/>
<xsl:copy-of select="MaxInvalidRetries"/>
<xsl:copy-of select="MainMenuDTMF"/>
<xsl:copy-of select="ConfirmDTMF"/>
<xsl:copy-of select="NegateDTMF"/>
<xsl:choose>
<xsl:when test="MnpDaId">
<xsl:copy-of select="MnpDaId"/>
</xsl:when>
<xsl:otherwise>
<MnpDaId>1</MnpDaId>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="LtdDaId">
<xsl:copy-of select="LtdDaId"/>
</xsl:when>
<xsl:otherwise>
<LtdDaId>2</LtdDaId>
</xsl:otherwise>
</xsl:choose>
<xsl:choose>
<xsl:when test="FlatRateDataServiceConfiguration">
<xsl:element name="FlatRateDataServiceConfiguration">
<xsl:element name="ServiceSpecificData">
<xsl:for-each select="FlatRateDataServiceConfiguration/ServiceSpecificData/ServiceClassData">
<xsl:element name="ServiceClassData">
<xsl:attribute name="dtmf"><xsl:value-of select="@dtmf"/></xsl:attribute>
<xsl:attribute name="minimumBalance"><xsl:value-of select="@minimumBalance"/></xsl:attribute>
<xsl:attribute name="promptId"><xsl:value-of select="@promptId"/></xsl:attribute>
<xsl:attribute name="refillProfileId"><xsl:value-of select="@refillProfileId"/></xsl:attribute>
<xsl:attribute name="serviceClass"><xsl:value-of select="@serviceClass"/></xsl:attribute>
<xsl:attribute name="serviceDays"><xsl:value-of select="@serviceDays"/></xsl:attribute>
<xsl:attribute name="transactionAmount"><xsl:value-of select="@transactionAmount"/></xsl:attribute>
<xsl:attribute name="transactionCurrency"><xsl:value-of select="@transactionCurrency"/></xsl:attribute>
<xsl:choose>
<xsl:when test="@planType">
<xsl:attribute name="planType"><xsl:value-of select="@planType"/></xsl:attribute>
<xsl:attribute name="pamServiceId"><xsl:value-of select="@pamServiceId"/></xsl:attribute>
<xsl:attribute name="offerId"><xsl:value-of select="@offerId"/></xsl:attribute>
<xsl:attribute name="terminationPromptId"><xsl:value-of select="@terminationPromptId"/></xsl:attribute>
</xsl:when>
<xsl:otherwise>
<xsl:attribute name="planType">NORMAL</xsl:attribute>
<xsl:attribute name="pamServiceId">1</xsl:attribute>
<xsl:attribute name="offerId">1</xsl:attribute>
<xsl:attribute name="terminationPromptId">USER_FRDS_FINAL_MSG</xsl:attribute>
</xsl:otherwise>
</xsl:choose>
</xsl:element>
</xsl:for-each>
</xsl:element>
<xsl:choose>
<xsl:when test="./FlatRateDataServiceConfiguration">
<xsl:copy-of select="UserType"/>
</xsl:when>
<xsl:otherwise>
<UserType>SmartPhone Users</UserType>
</xsl:otherwise>
</xsl:choose>
</xsl:element>
</xsl:when>
<xsl:otherwise>
<FlatRateDataServiceConfiguration>
<ServiceSpecificData>
<ServiceClassData planType="NORMAL" dtmf="2" minimumBalance="80" promptId="USER_FRDS_SEVEN_DAYS_MSG" refillProfileId="E1" serviceClass="10" serviceDays="7" transactionAmount="26" transactionCurrency="EUR" pamServiceId="1" offerId="1" terminationPromptId="FRDS_MORE_DAYS"/>
</ServiceSpecificData>
<UserType>2G</UserType>
</FlatRateDataServiceConfiguration>
</xsl:otherwise>
</xsl:choose>
</xsl:element>
</xsl:for-each>
</FlatRateSMSConfiguration>
</xsl:template>
</xsl:stylesheet>
答案 0 :(得分：1)
xsl:for-each中设置的上下文为Configuration。您必须考虑选择XPath的值FlatRateDataServiceConfiguration。在您当前的XSLT中，您在for-each：
<xsl:for-each select="Configuration">
...
<xsl:choose>
<xsl:when test="./FlatRateDataServiceConfiguration">
<xsl:copy-of select="UserType"/> <!-- UserType will not be copied -->
</xsl:when>
<xsl:otherwise>
<UserType>SmartPhone Users</UserType>
</xsl:otherwise>
</xsl:choose>
...
UserType的绝对路径是
/FlatRateSMSConfiguration/Configuration/FlatRateDataServiceConfiguration/UserType
由于您位于Configuration内（由包含for-each块的xsl:choose建立的上下文），您可以使用UserType的相对路径，该路径应为{ {1}}：
FlatRateDataServiceConfiguration/UserType在您的代码中，您试图获得：
<xsl:for-each select="Configuration">
...
<xsl:choose>
<xsl:when test="./FlatRateDataServiceConfiguration">
<xsl:copy-of select="FlatRateDataServiceConfiguration/UserType"/>
</xsl:when>
<xsl:otherwise>
<UserType>SmartPhone Users</UserType>
</xsl:otherwise>
</xsl:choose>
...
并不存在。