无法通过父标签的键获取子标签值

问题描述 投票：0回答：1

我正在尝试更改/修复现有的 xslt1.0 样式表，但我不明白为什么它不起作用。

这是 XML 的一部分：

l: part of the xml
<Survey>
<SurveyHeader name="230222-CODE-TEST_1"/>
<Equipment>
<GPSReceiverDetails id="GPS_1" manufacturer="Leica Geosystems AG" model=" " serialNumber=" "/>
</Equipment>
<GPSSetup id="GPSSetupID_4" GPSReceiverDetailsID="GPS_1" antennaHeight="1.544000" stationName="GPS0001">
<GPSPosition pntRef="GPS0001" wgsLatitude="53.201424895062324" wgsLongitude="6.564586909979438" wgsHeight="42.733122">
<TargetPoint name="GPS0001" pntRef="GPS0001" >580062.951336 233674.586902 1.958197</TargetPoint>
<GPSQCInfoLevel2 covarianceXX="0.0000556906" covarianceXY="-0.0000044136" covarianceXZ="0.0000055377" covarianceYY="0.0000384521" covarianceYZ="0.0000021151" covarianceZZ="0.0000702572" RMS="1.000000" startTime="1361092385" stopTime="1361092385"/>
</GPSPosition>
</GPSSetup>
</Survey>

h: part of the xml
<Survey name="230222-CODE-TEST_1" SurveyDuration="P0Y0M0DT0H4M4S">
<GPSSetup uniqueID="GPSSetupID_4">
<GPSPosition targetPntRef="GPS0001" tiltCompensated="true" verticalOffset="0.000000">
<GPSQuality HDOP="0.600000" GDOP="1.878829" PDOP="1.252996" VDOP="1.100000" TDOP="1.400000"/>
<SatelliteInfo GPSSatTracked="9" GPSSatUsed="9" GALILEOSatTracked="4" GALILEOSatUsed="4" GLONASSSatTracked="6" GLONASSSatUsed="5" BEIDOUSatTracked="12" BEIDOUSatUsed="12"/>
<RTKInfo referenceRef="RTCM-Ref 0028" networkSolution="true" networkType="i-MAX" dataFormat="RTCM v3" ipAddress="nl.nrtk.eu" port="7801" mountpoint="MSM_iMAX" insideRTKNetwork="Inside" GPUID="" numRefStationUsed="1" numRTKPositionUsed="0"/>
<GPSPositionVelocity velocityX="0.017137" velocityY="0.001990" velocityZ="-0.010346" linearVelocityUnit="linearUnitPerSecond">
<VelocityQuality Qxx="0.00073671" Qxy="-0.00014277" Qxz="0.00014533" Qyy="0.00039546" Qyz="-0.00000568" Qzz="0.00262066" MeanError="1.00000000"/>
</GPSPositionVelocity>
<TiltInfo tilt="2.09289226" tiltQuality="0.20604831" maxTilt="2.09289172" maxTiltQuality="0.20604831" tiltDirection="292.82119353" tiltDirectionQuality="6.73585423" antennaHeading="126.49655262" antennaHeadingQuality="1.56022984">
<AttitudeQuaternion w="0.545783971615954" x="0.014694157165700" y="-0.007365463010343" z="-0.837764697290921">
<QuaternionQuality Qxx="0.0000105379" Qxy="0.0000002941" Qxz="-0.0000101108" Qyy="0.0000108098" Qyz="0.0000066687" Qzz="0.0008271720" MeanError="63.6619772368"/>
</AttitudeQuaternion>
<AngularVelocity velocityX="-3.1438191155" velocityY="1.5740678692" velocityZ="-1.4080006143" AngularVelocityType="angularUnitPerSecond">
<VelocityQuality Qxx="0.0000001490" Qxy="0.0000002552" Qxz="-0.0000000169" Qyy="0.0000005309" Qyz="0.0000000154" Qzz="0.0000003482" MeanError="63.6619772368"/>
</AngularVelocity>
<LeverArm deltaNorth="0.001000" deltaEast="0.000280" deltaUp="-1.643910"/>
</TiltInfo>
</GPSPosition>
</GPSSetup>
</Survey>

在 xslt 模板中，我有以下键和变量：

<xsl:key name="KeyGPSPositionH" match="h:GPSPosition" use="@targetPntRef" />

<xsl:template match="l:GPSPosition">

  <xsl:variable name="gpsSetupH" select="key('KeyGPSPositionH',@pntRef)" />

如果我然后使用： 

<xsl:value-of select="$gpsSetupH/h:GPSQuality/@HDOP" />
它从 xml 返回 HDOP 的值 或者： 
<xsl:value-of select="$gpsSetupH/h:SatelliteInfo/@GPSSatTracked" />
它从 xml

返回 GPSSatTracked 的值

但是如果我把它改成： 

<xsl:value-of select="$gpsSetupH/h:TiltInfo/@tiltQuality" />
或 
<xsl:value-of select="$gpsSetupH/@verticalOffset" />
尽管它与其他两个具有相同的父标签，但它什么也不返回。

我试图将其更改为 

<xsl:value-of select="$gpsSetupH/h:GPSPosition/h:TiltInfo/@tiltQuality" />
并更改密钥以使其在调查标签中开始 
<xsl:key name="KeySurveyH" match="h:Survey" use="h:GPSSetup/h:GPSPosition/@targetPntRef" />
但是这两个选项都不起作用。

xslt xslt-1.0
1个回答
0
投票

当我将 XSLT 1.0 与 XslCompiledTransform 一起使用并尝试将您的代码片段变成最小的、格式化的、完整的示例时，我得到的 XML 为

<?xml version="1.0" encoding="UTF-8"?>
<root>
   <Survey>
      <SurveyHeader name="230222-CODE-TEST_1"/>
      <Equipment>
         <GPSReceiverDetails id="GPS_1"
                             manufacturer="Leica Geosystems AG"
                             model=" "
                             serialNumber=" "/>
      </Equipment>
      <GPSSetup id="GPSSetupID_4"
                GPSReceiverDetailsID="GPS_1"
                antennaHeight="1.544000"
                stationName="GPS0001">
         <GPSPosition pntRef="GPS0001"
                      wgsLatitude="53.201424895062324"
                      wgsLongitude="6.564586909979438"
                      wgsHeight="42.733122">
            <TargetPoint name="GPS0001" pntRef="GPS0001">580062.951336 233674.586902 1.958197</TargetPoint>
            <GPSQCInfoLevel2 covarianceXX="0.0000556906"
                             covarianceXY="-0.0000044136"
                             covarianceXZ="0.0000055377"
                             covarianceYY="0.0000384521"
                             covarianceYZ="0.0000021151"
                             covarianceZZ="0.0000702572"
                             RMS="1.000000"
                             startTime="1361092385"
                             stopTime="1361092385"/>
         </GPSPosition>
      </GPSSetup>
   </Survey>
   <Survey name="230222-CODE-TEST_1" SurveyDuration="P0Y0M0DT0H4M4S">
      <GPSSetup uniqueID="GPSSetupID_4">
         <GPSPosition targetPntRef="GPS0001"
                      tiltCompensated="true"
                      verticalOffset="0.000000">
            <GPSQuality HDOP="0.600000"
                        GDOP="1.878829"
                        PDOP="1.252996"
                        VDOP="1.100000"
                        TDOP="1.400000"/>
            <SatelliteInfo GPSSatTracked="9"
                           GPSSatUsed="9"
                           GALILEOSatTracked="4"
                           GALILEOSatUsed="4"
                           GLONASSSatTracked="6"
                           GLONASSSatUsed="5"
                           BEIDOUSatTracked="12"
                           BEIDOUSatUsed="12"/>
            <RTKInfo referenceRef="RTCM-Ref 0028"
                     networkSolution="true"
                     networkType="i-MAX"
                     dataFormat="RTCM v3"
                     ipAddress="nl.nrtk.eu"
                     port="7801"
                     mountpoint="MSM_iMAX"
                     insideRTKNetwork="Inside"
                     GPUID=""
                     numRefStationUsed="1"
                     numRTKPositionUsed="0"/>
            <GPSPositionVelocity velocityX="0.017137"
                                 velocityY="0.001990"
                                 velocityZ="-0.010346"
                                 linearVelocityUnit="linearUnitPerSecond">
               <VelocityQuality Qxx="0.00073671"
                                Qxy="-0.00014277"
                                Qxz="0.00014533"
                                Qyy="0.00039546"
                                Qyz="-0.00000568"
                                Qzz="0.00262066"
                                MeanError="1.00000000"/>
            </GPSPositionVelocity>
            <TiltInfo tilt="2.09289226"
                      tiltQuality="0.20604831"
                      maxTilt="2.09289172"
                      maxTiltQuality="0.20604831"
                      tiltDirection="292.82119353"
                      tiltDirectionQuality="6.73585423"
                      antennaHeading="126.49655262"
                      antennaHeadingQuality="1.56022984">
               <AttitudeQuaternion w="0.545783971615954"
                                   x="0.014694157165700"
                                   y="-0.007365463010343"
                                   z="-0.837764697290921">
                  <QuaternionQuality Qxx="0.0000105379"
                                     Qxy="0.0000002941"
                                     Qxz="-0.0000101108"
                                     Qyy="0.0000108098"
                                     Qyz="0.0000066687"
                                     Qzz="0.0008271720"
                                     MeanError="63.6619772368"/>
               </AttitudeQuaternion>
               <AngularVelocity velocityX="-3.1438191155"
                                velocityY="1.5740678692"
                                velocityZ="-1.4080006143"
                                AngularVelocityType="angularUnitPerSecond">
                  <VelocityQuality Qxx="0.0000001490"
                                   Qxy="0.0000002552"
                                   Qxz="-0.0000000169"
                                   Qyy="0.0000005309"
                                   Qyz="0.0000000154"
                                   Qzz="0.0000003482"
                                   MeanError="63.6619772368"/>
               </AngularVelocity>
               <LeverArm deltaNorth="0.001000" deltaEast="0.000280" deltaUp="-1.643910"/>
            </TiltInfo>
         </GPSPosition>
      </GPSSetup>
   </Survey>
</root>

XSLT 为

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    version="1.0">
  
  <xsl:key name="KeyGPSPositionH" match="GPSPosition" use="@targetPntRef" />

  <xsl:template match="@* | node()" name="identity">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>
  
  <xsl:template match="GPSPosition[@pntRef]">
    <xsl:call-template name="identity"/>
    <xsl:variable name="gpsSetupH" select="key('KeyGPSPositionH',@pntRef)" />
    <xsl:comment>
      <xsl:text>tiltQuality: </xsl:text>
      <xsl:value-of select="$gpsSetupH/TiltInfo/@tiltQuality" />
      <xsl:text>; verticalOffset: </xsl:text>
      <xsl:value-of select="$gpsSetupH/@verticalOffset"/>
    </xsl:comment>

  </xsl:template>
  
  <xsl:output indent="yes"/>

</xsl:stylesheet>

结果为

<?xml version="1.0" encoding="utf-16"?>
<root>
   <Survey>
      <SurveyHeader name="230222-CODE-TEST_1" />
      <Equipment>
         <GPSReceiverDetails id="GPS_1" manufacturer="Leica Geosystems AG" model=" " serialNumber=" " />
      </Equipment>
      <GPSSetup id="GPSSetupID_4" GPSReceiverDetailsID="GPS_1" antennaHeight="1.544000" stationName="GPS0001">
         <GPSPosition pntRef="GPS0001" wgsLatitude="53.201424895062324" wgsLongitude="6.564586909979438" wgsHeight="42.733122">
            <TargetPoint name="GPS0001" pntRef="GPS0001">580062.951336 233674.586902 1.958197</TargetPoint>
            <GPSQCInfoLevel2 covarianceXX="0.0000556906" covarianceXY="-0.0000044136" covarianceXZ="0.0000055377" covarianceYY="0.0000384521" covarianceYZ="0.0000021151" covarianceZZ="0.0000702572" RMS="1.000000" startTime="1361092385" stopTime="1361092385" />
         </GPSPosition><!--tiltQuality: 0.20604831; verticalOffset: 0.000000-->
      </GPSSetup>
   </Survey>
   <Survey name="230222-CODE-TEST_1" SurveyDuration="P0Y0M0DT0H4M4S">
      <GPSSetup uniqueID="GPSSetupID_4">
         <GPSPosition targetPntRef="GPS0001" tiltCompensated="true" verticalOffset="0.000000">
            <GPSQuality HDOP="0.600000" GDOP="1.878829" PDOP="1.252996" VDOP="1.100000" TDOP="1.400000" />
            <SatelliteInfo GPSSatTracked="9" GPSSatUsed="9" GALILEOSatTracked="4" GALILEOSatUsed="4" GLONASSSatTracked="6" GLONASSSatUsed="5" BEIDOUSatTracked="12" BEIDOUSatUsed="12" />
            <RTKInfo referenceRef="RTCM-Ref 0028" networkSolution="true" networkType="i-MAX" dataFormat="RTCM v3" ipAddress="nl.nrtk.eu" port="7801" mountpoint="MSM_iMAX" insideRTKNetwork="Inside" GPUID="" numRefStationUsed="1" numRTKPositionUsed="0" />
            <GPSPositionVelocity velocityX="0.017137" velocityY="0.001990" velocityZ="-0.010346" linearVelocityUnit="linearUnitPerSecond">
               <VelocityQuality Qxx="0.00073671" Qxy="-0.00014277" Qxz="0.00014533" Qyy="0.00039546" Qyz="-0.00000568" Qzz="0.00262066" MeanError="1.00000000" />
            </GPSPositionVelocity>
            <TiltInfo tilt="2.09289226" tiltQuality="0.20604831" maxTilt="2.09289172" maxTiltQuality="0.20604831" tiltDirection="292.82119353" tiltDirectionQuality="6.73585423" antennaHeading="126.49655262" antennaHeadingQuality="1.56022984">
               <AttitudeQuaternion w="0.545783971615954" x="0.014694157165700" y="-0.007365463010343" z="-0.837764697290921">
                  <QuaternionQuality Qxx="0.0000105379" Qxy="0.0000002941" Qxz="-0.0000101108" Qyy="0.0000108098" Qyz="0.0000066687" Qzz="0.0008271720" MeanError="63.6619772368" />
               </AttitudeQuaternion>
               <AngularVelocity velocityX="-3.1438191155" velocityY="1.5740678692" velocityZ="-1.4080006143" AngularVelocityType="angularUnitPerSecond">
                  <VelocityQuality Qxx="0.0000001490" Qxy="0.0000002552" Qxz="-0.0000000169" Qyy="0.0000005309" Qyz="0.0000000154" Qzz="0.0000003482" MeanError="63.6619772368" />
               </AngularVelocity>
               <LeverArm deltaNorth="0.001000" deltaEast="0.000280" deltaUp="-1.643910" />
            </TiltInfo>
         </GPSPosition>
      </GPSSetup>
   </Survey>
</root>

输出注释

<!--tiltQuality: 0.20604831; verticalOffset: 0.000000-->
建议XPath表达式查找数据。

因此，请考虑提供最少但完整的示例，以便我们重现问题，以及有关您使用的 XSLT 1.0 处理器的信息。

最新问题
© www.soinside.com 2019 - 2024. All rights reserved.