XSLT中XML到XML的转换

Question

我有一个xml文档，我试图通过分组和计数将其转换为不同的xml文档。我曾经尝试过文本，因为我在过去使用过它，一切正常工作，但我试图转换为xml，没有看到预期的结果。

错误:名称空间前缀'xd‘尚未声明

xml:

<?xml version="1.0" encoding="UTF-8"?>
<xd:StudentData xmlns:xd="urn:com.student.report/student_test">
   <xd:StudentRecord>
      <xd:StudentRequisition xd:Descriptor="1858 Economics"/>
      <xd:StudentStatus xd:Descriptor="Pass"/>
      <xd:StudentApplication xd:Descriptor="1858 Economics"/>
      <xd:StudentID>S-1</xd:StudentID>
      <xd:Gender xd:Descriptor="Male"/>
      <xd:StudentDate>2020-01-01-12:00</xd:StudentDate>
      <xd:Total_Score>75</xd:Total_Score>
      <xd:ProfileStudentTestGroup>
         <xd:StudentTest xd:Descriptor="Student Evaluation"/>
         <xd:StudentTest_Status xd:Descriptor="Pass"/>
         <xd:StudentTest_Date>2020-01-31-12:00</xd:StudentTest_Date>
         <xd:StudentTest_Result_Score>75</xd:StudentTest_Result_Score>
      </xd:ProfileStudentTestGroup>
   </xd:StudentRecord>
   <xd:StudentRecord>
      <xd:StudentRequisition xd:Descriptor="1500 Social Service"/>
      <xd:StudentStatus xd:Descriptor="Fail"/>
      <xd:StudentApplication xd:Descriptor="1500 Social Service"/>
      <xd:StudentID>S-3</xd:StudentID>
      <xd:Gender xd:Descriptor="Female"/>
      <xd:StudentDate>2020-01-01-12:00</xd:StudentDate>
      <xd:Total_Score>65</xd:Total_Score>
      <xd:ProfileStudentTestGroup>
         <xd:StudentTest xd:Descriptor="Student Evaluation"/>
         <xd:StudentTest_Status xd:Descriptor="Pass"/>
         <xd:StudentTest_Date>2020-01-31-12:00</xd:StudentTest_Date>
         <xd:StudentTest_Result_Score>65</xd:StudentTest_Result_Score>
      </xd:ProfileStudentTestGroup>
   </xd:StudentRecord>
   <xd:StudentRecord>
      <xd:StudentRequisition xd:Descriptor="1500 Social Service"/>
      <xd:StudentStatus xd:Descriptor="Fail"/>
      <xd:StudentApplication xd:Descriptor="1500 Social Service"/>
      <xd:StudentID>S-4</xd:StudentID>
      <xd:Gender xd:Descriptor="Female"/>
      <xd:StudentDate>2020-01-01-12:00</xd:StudentDate>
      <xd:Total_Score>67</xd:Total_Score>
      <xd:ProfileStudentTestGroup>
         <xd:StudentTest xd:Descriptor="Student Evaluation"/>
         <xd:StudentTest_Status xd:Descriptor="Pass"/>
         <xd:StudentTest_Date>2020-01-31-12:00</xd:StudentTest_Date>
         <xd:StudentTest_Result_Score>67</xd:StudentTest_Result_Score>
      </xd:ProfileStudentTestGroup>
   </xd:StudentRecord>
   <xd:StudentRecord>
      <xd:StudentRequisition xd:Descriptor="1858 Economics"/>
      <xd:StudentStatus xd:Descriptor="Pass"/>
      <xd:StudentApplication xd:Descriptor="1858 Economics"/>
      <xd:StudentID>S-7</xd:StudentID>
      <xd:Gender xd:Descriptor="Male"/>
      <xd:StudentDate>2020-01-01-12:00</xd:StudentDate>
      <xd:Total_Score>85</xd:Total_Score>
      <xd:ProfileStudentTestGroup>
         <xd:StudentTest xd:Descriptor="Student Evaluation"/>
         <xd:StudentTest_Status xd:Descriptor="Pass"/>
         <xd:StudentTest_Date>2020-01-31-12:00</xd:StudentTest_Date>
         <xd:StudentTest_Result_Score>85</xd:StudentTest_Result_Score>
      </xd:ProfileStudentTestGroup>
   </xd:StudentRecord>
</xd:StudentData>

xslt:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:math="http://www.w3.org/2005/xpath-functions/math"
    xmlns:map="http://www.w3.org/2005/xpath-functions/map"
    xmlns:array="http://www.w3.org/2005/xpath-functions/array"
    xmlns:xd="urn:com.student.report/student_test"
    exclude-result-prefixes="#all"
    version="3.0">

  <xsl:mode on-no-match="shallow-copy"/>
  <xsl:output method="xml" indent="yes"/>
  <xsl:strip-space elements="*"/>

  <xsl:template match="/*">
<root>
  <xsl:for-each-group select="StudentRecord" composite="yes" group-by="StudentRequisition/@xd:Descriptor, ProfileStudentTestGroup/StudentTest/@xd:Descriptor">
  <StudentRequisition>
      <xsl:text>{current-grouping-key()[1]}</xsl:text>
      </StudentRequisition>
  <StudentTest>
      <xsl:text>{current-grouping-key()[2]}</xsl:text>
      </StudentTest>  
  <MPass>
      <xsl:text>{count(current-group()[Gender/@xd:Descriptor = 'Male'][ProfileStudentTestGroup/StudentTest_Status[@xd:Descriptor = 'Pass']])}</xsl:text>
      </MPass>
  </xsl:for-each-group>
</root>
  </xsl:template>
</xsl:stylesheet>

输出：

<root>
<StudentRequisition>1858 Economics</StudentRequisition>
<StudentTest>Student Evaluation</StudentTest>
<MPass>1</MPass>
</root>

Answer 1

在XSLT中，您将名称空间前缀声明为wd，可能是一个错误：

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:math="http://www.w3.org/2005/xpath-functions/math"
    xmlns:map="http://www.w3.org/2005/xpath-functions/map"
    xmlns:array="http://www.w3.org/2005/xpath-functions/array"
    xmlns:wd="urn:com.student.report/student_test"
          ^