如何从多个子节点访问文本值？仅从第一个子节点实例获取值

Question

我继承了一个相当丑陋的 xsl 脚本，并且对 xslt 的经验非常有限。昨天我从你们那里得到了很多帮助，但仍然有点挣扎，所以我提供了整个 xml 和对所需输出的更好描述。

我认为通过将整个脚本包装在模板和选择中来完成一些愚蠢的事情，因为当我进行建议的更改时，我不断收到编译错误，并且因为我有点盲目，所以我很清楚我缺乏足够的理解和时间来获取所以我真诚地感谢一些帮助。

在这个阶段，我只关心组件 4。一旦我把它搞清楚，我确信我能够重写剧本的其余部分。

我得到的输出；

contactID,mediumCode,areaCode,communicationDetails
"0123456789","T","02","62881111"
"5290001890","T","02","92881781"
"4400139361","T","07","49281771"
"6600027368","T","07","48103280"

我需要的输出；

contactID,mediumCode,areaCode,communicationDetails
"0123456789","T","02","62881111"
"5290001890","T","02","92881781"
"4400139361","T","07","49281771"
"6600027368","T","07","48103280"

"0123456789","E","","[email protected]"
"5290001890","E","","[email protected]"
"4400139361","E","","[email protected]"
"6600027368","E","","[email protected]"

"0123456789","M","","04140012225"
"5290001890","M","","04290012333"
"4400139361","M","","0404009266"
"6600027368","M","","0414003242"

XSL 样式表：

<!-- AHPRA XML CSV Converter Script -->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="text" media-type="text" encoding="UTF-8" indent="no" />
<xsl:strip-space elements="*" />

<!-- BATCH FILE COMPONENT -->
<xsl:param name="component"/>
<!-- 0=requestHeader, 1=personalDetails, 2=residencyDetails, 3=addressDetails, 4=communications, 5=primaryQualification, 6=additionalQualifications, 7=legacyDetails, 8=registrationDetails, 9=specialtyDetails, 10=conditionDetails, 11=endorsementDetails, 12=undertakingDetails, 13=notationDetails, 14=employmentDetails -->

<!-- FORMAT DATE -->
<xsl:template name="formatDate">
  <xsl:param name="date"/>
  <xsl:choose>
    <xsl:when test="boolean($date)">
      <xsl:if test="string-length($date)&gt;0">
        <xsl:value-of select="concat(substring($date,9,2),'/',substring($date,6,2),'/',substring($date,1,4))" />
      </xsl:if>
    </xsl:when>
    <xsl:otherwise> </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<!-- NL2BR -->
<xsl:template name="nl2br">
  <xsl:param name="string"/>
  <xsl:choose>
    <xsl:when test="contains($string,'&#10;')">
      <xsl:value-of select="substring-before($string, '&#10;')" disable-output-escaping="yes"/>
      <br/>
      <xsl:call-template name="nl2br"><xsl:with-param name="string" select="substring-after($string,'&#10;')"/></xsl:call-template>
    </xsl:when>
   <xsl:otherwise>
     <xsl:value-of select="$string" disable-output-escaping="yes"/>
   </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<xsl:template match="/">
  <xsl:choose>

    <!-- COMPONENT 0 requestHeader -->
    <!-- runType, dateStamp, sequenceNumber -->
    <xsl:when test="$component=0">
      <xsl:for-each select="medicare">
        "<xsl:value-of select="requestHeader/runType" />",
        <xsl:call-template name="formatDate">
          <xsl:with-param name="date" select="requestHeader/dateStamp"/>
        </xsl:call-template>,
        "<xsl:value-of select="requestHeader/sequenceNumber" />
        "<xsl:text>&#xa;</xsl:text>
      </xsl:for-each>
    </xsl:when>

    <!-- COMPONENT 1 personalDetails -->
    <!-- contactID, givenName, middleName, familyName, title, gender, dateOfBirth, dobAccuracy, dateOfDeath -->
    <xsl:when test="$component=1">
      <xsl:for-each select="//person">
        <xsl:if test="string-length(concat(personalDetails/givenName,personalDetails/middleName,personalDetails/familyName,personalDetails/title,personalDetails/gender,personalDetails/dateOfBirth,personalDetails/dobAccuracy,personalDetails/dateOfDeath))!=0">
          "<xsl:value-of select="contactID" />",
          "<xsl:value-of select="personalDetails/givenName" />",
          "<xsl:value-of select="personalDetails/middleName" />",
          "<xsl:value-of select="personalDetails/familyName" />",
          "<xsl:value-of select="personalDetails/title" />",
          "<xsl:value-of select="personalDetails/gender" />",
          <xsl:call-template name="formatDate"><xsl:with-param name="date" select="personalDetails/dateOfBirth"/></xsl:call-template>,
          "<xsl:value-of select="personalDetails/dobAccuracy" />",
          <xsl:call-template name="formatDate"><xsl:with-param name="date" select="personalDetails/dateOfDeath"/>
          </xsl:call-template>
          <xsl:text>&#xa;</xsl:text>
        </xsl:if>
      </xsl:for-each>
    </xsl:when>

    <!-- COMPONENT 4 communications -->
    <!-- contactID, mediumCode, areaCode, communicationDetails -->

    <xsl:variable name="q" select="'&quot;'" />
    <xsl:variable name="c" select="', '" />

    <xsl:when test="$component=4">
      <xsl:for-each select="//person">
        <xsl:if test="string-length(concat(communications/communication/mediumCode,communications/communication/areaCode,communications/communication/communicationDetails))!=0">
          <xsl:value-of select="concat($q, contactID, $q, $c, $q, 
          normalize-space(communications/communication/mediumCode), $q, $c, $q, 
          normalize-space(communications/communication/areaCode), $q, $c, $q, 
          normalize-space(communications/communication/communicationDetails), $q)" />
          <xsl:text>&#xa;</xsl:text>
        </xsl:if>
      </xsl:for-each>
    </xsl:when>

    </xsl:choose>
  </xsl:template>
</xsl:stylesheet>

XML 数据：

<medicare>  
  <requestHeader>
    <runType>O</runType>
    <dateStamp>2011-05-30</dateStamp>
    <sequenceNumber>10</sequenceNumber>
  </requestHeader>
  <person>
    <contactID>0123456789</contactID>
    <personalDetails>
      <givenName>John</givenName>
      <middleName>Alan</middleName>
      <familyName>Smith</familyName>
      <title>DR</title>
      <gender>M</gender>
      <dateOfBirth>1932-03-10</dateOfBirth>      
      <dobAccuracy>AAA</dobAccuracy>
      <dateOfDeath>1932-03-11</dateOfDeath>
    </personalDetails>
    <residencyDetails>
      <residencyStatus>Permanent Resident</residencyStatus>
      <visaType>Temporary</visaType>
      <passportNum>F1925190</passportNum>
      <countryOfIssue>Australia</countryOfIssue>
    </residencyDetails>
    <addressDetails>
      <address>
      <addressPurposeIndicator>Preferred Address</addressPurposeIndicator>
      <floorLevelNum>10</floorLevelNum>
    <floorLevelType>Ground</floorLevelType>
    <lotNum>72</lotNum>
        <postcode>2000</postcode>
        <state>NSW</state>
        <streetName>Main</streetName>
        <streetNum>112</streetNum>
        <streetType>RD</streetType>
        <locality>SYDNEY</locality>
        <flatUnitNum>3</flatUnitNum>
    <flatUnitType>Unit</flatUnitType>
        <sitePremisesName>St Vincents</sitePremisesName>
      </address>
      <address>
        <addressPurposeIndicator>Principle Place of Practice</addressPurposeIndicator>
        <floorLevelNum />
    <floorLevelType />
    <lotNum />
        <postcode>2000</postcode>
        <state>NSW</state>
        <streetName>Station</streetName>
        <streetNum />
        <streetType>ST</streetType>
        <locality>SYDNEY</locality>
        <flatUnitNum />
    <flatUnitType />
        <sitePremisesName>North Shore Hospital</sitePremisesName>
      </address>
    </addressDetails>
    <communications>
      <communication>
        <mediumCode>T</mediumCode>
      <areaCode>02</areaCode>
        <communicationDetails>62881111</communicationDetails>
      </communication>
      <communication>
        <mediumCode>E</mediumCode>
        <communicationDetails>[email protected]</communicationDetails>
      </communication>
    <communication>
        <mediumCode>M</mediumCode>
        <communicationDetails>04140012225</communicationDetails>
      </communication>
    </communications>
    <registrationDetails>
       <registration>
          <registrationID>MED0000000009</registrationID>
          <profession>Medical Practitioner</profession>
          <division />
          <initialRegistrationStartDate>1977-08-03</initialRegistrationStartDate>
          <registrationType>General</registrationType>
          <registrationSubType />
          <registrationTypeStartDate>2011-04-30</registrationTypeStartDate>
          <registrationStatus>Registered</registrationStatus>
          <registrationStatusStartDate>2011-05-30</registrationStatusStartDate>
          <specialtyDetails>
            <specialtyDetail>
               <specialty>Heart Bypass</specialty>
               <fieldOfSpecialtyPractice>Surgery</fieldOfSpecialtyPractice>
           <specialtyPracticeStartDate>2010-02-20</specialtyPracticeStartDate>
           <specialtyPracticeEndDate>2011-04-23</specialtyPracticeEndDate>
            </specialtyDetail>
          </specialtyDetails>
          <conditionDetails>
            <condition>
               <applicationRegistrationCondition>APPROVED</applicationRegistrationCondition>
               <conditionApprovedDate>1805-12-08</conditionApprovedDate>
               <conditionDetail>The quick brown fox jumped over the lazy dog.</conditionDetail>
            </condition>
        </conditionDetails>
        <endorsementDetails>
          <endorsement>
               <endorsementType>Medicine Man</endorsementType>
               <endorsementSubType>Voodoo</endorsementSubType>
               <endorsementCreateDate>2002-08-20</endorsementCreateDate>
               <endorsementEndDate>2017-06-06</endorsementEndDate>
          </endorsement>
        </endorsementDetails>
        <undertakingDetails>
          <undertaking>
               <undertakingType>Further Study</undertakingType>
               <undertakingApprovedDate>2001-07-11</undertakingApprovedDate>
               <undertakingText>The Doctor will undertake further study.</undertakingText>
          </undertaking>
        </undertakingDetails>
          <notationDetails>
            <notationDetail>
               <notationCreateDate />  
               <notationEndDate />  
           <notation />
            </notationDetail>
          </notationDetails>
        </registration>
        <registration>
          <registrationID>MED0000000010</registrationID>
          <profession>Medical Practitioner</profession>
          <division />
          <initialRegistrationStartDate>1977-08-03</initialRegistrationStartDate>
          <registrationType>Specialist</registrationType>
          <registrationSubType />
          <registrationTypeStartDate>2011-04-30</registrationTypeStartDate>
          <registrationStatus>Registered</registrationStatus>
          <registrationStatusStartDate>2011-05-30</registrationStatusStartDate>
          <specialtyDetails>
            <specialtyDetail>
               <specialty>Pathology</specialty>
               <fieldOfSpecialtyPractice>General pathology</fieldOfSpecialtyPractice>
           <specialtyPracticeStartDate>2010-11-01</specialtyPracticeStartDate>
           <specialtyPracticeEndDate />
            </specialtyDetail>
          </specialtyDetails>
          <conditionDetails>
            <condition>
               <applicationRegistrationCondition>APPROVED</applicationRegistrationCondition>
               <conditionApprovedDate>1805-12-08</conditionApprovedDate>
               <conditionDetail>The quick brown fox jumped over the lazy dog.</conditionDetail>
            </condition>
        </conditionDetails>
        <endorsementDetails>
          <endorsement>
               <endorsementType />
               <endorsementSubType />
               <endorsementCreateDate />
               <endorsementEndDate />
          </endorsement>
        </endorsementDetails>
        <undertakingDetails>
          <undertaking>
               <undertakingType></undertakingType>
               <undertakingApprovedDate></undertakingApprovedDate>
               <undertakingText></undertakingText>
          </undertaking>
        </undertakingDetails>
          <notationDetails>
            <notationDetail>
               <notationCreateDate />  
               <notationEndDate />  
           <notation />
            </notationDetail>
          </notationDetails>
       </registration>
    </registrationDetails>
    <employmentDetails>
      <positionTitle>Chief Medical Officer</positionTitle>
      <sponsorOrganisationName>North Shore Hospital</sponsorOrganisationName>
      <sponsorOrganisationContact>Peter Piper</sponsorOrganisationContact>
    </employmentDetails>
  </person>
  <person>
    <contactID>5290001890</contactID>
    <personalDetails>
      <givenName>Rabina</givenName>
      <middleName>Dora</middleName>
      <familyName>Smiley</familyName>
      <title>DR</title>
      <gender>F</gender>
      <dateOfBirth>1961-03-22</dateOfBirth>      
      <dobAccuracy>AAA</dobAccuracy>
      <dateOfDeath>1900-12-01</dateOfDeath>
    </personalDetails>
    <residencyDetails>
      <residencyStatus>Australian Citizen</residencyStatus>
      <visaType>Perm</visaType>
      <passportNum>P1234567</passportNum>
      <countryOfIssue>New Zealand</countryOfIssue>
    </residencyDetails>
    <addressDetails>
      <address>
        <addressPurposeIndicator>Both preferred and practice</addressPurposeIndicator>
        <floorLevelNum />
      <floorLevelType />
      <lotNum />
        <postcode>2040</postcode>
        <state>NSW</state>
        <streetName>Plenty</streetName>
        <streetNum>29</streetNum>
        <streetType>RD</streetType>
        <locality>LEICHHARDT</locality>
        <flatUnitNum />
      <flatUnitType />
        <sitePremisesName />
      </address>
    </addressDetails>
    <communications>
      <communication>
        <mediumCode>T</mediumCode>
      <areaCode>02</areaCode>
        <communicationDetails>92881781</communicationDetails>
      </communication>
      <communication>
        <mediumCode>E</mediumCode>
        <communicationDetails>[email protected]</communicationDetails>
      </communication>
    <communication>
        <mediumCode>M</mediumCode>
        <communicationDetails>04290012333</communicationDetails>
      </communication>
    </communications>
    <registrationDetails>
       <registration>
          <registrationID>MED0000000219</registrationID>
          <profession>Medical Practitioner</profession>
          <division />
          <initialRegistrationStartDate>2010-04-15</initialRegistrationStartDate>
          <registrationType>Limited</registrationType>
          <registrationSubType>Area of Need</registrationSubType>
          <registrationTypeStartDate>2010-05-20</registrationTypeStartDate>
          <registrationStatus>Surrendered</registrationStatus>
          <registrationStatusStartDate>2011-05-29</registrationStatusStartDate>
          <specialtyDetails>
            <specialtyDetail>
               <specialty>Delivering Babies</specialty>
               <fieldOfSpecialtyPractice>Midwifery</fieldOfSpecialtyPractice>
           <specialtyPracticeStartDate>2009-01-31</specialtyPracticeStartDate>
           <specialtyPracticeEndDate>2099-04-08</specialtyPracticeEndDate>
            </specialtyDetail>
          </specialtyDetails>
          <conditionDetails>
            <condition>
               <applicationRegistrationCondition>Area of Need</applicationRegistrationCondition>
               <conditionApprovedDate>2010-05-28</conditionApprovedDate>
               <conditionDetail>PRE AMC TRAINING - TO WORK WITHIN EMERGENCY AT LYELL MCEWIN HOSPITAL - UNDER SUPERVISION OF DR H BLAH, DR B BLOGS NOMINATED SUPERVISORS.</conditionDetail>
            </condition>
           <condition>
               <applicationRegistrationCondition>Area of Need</applicationRegistrationCondition>
               <conditionApprovedDate>2011-05-22</conditionApprovedDate>
               <conditionDetail>DR B BLOGS NOMINATED SUPERVISOR</conditionDetail>
            </condition>
        </conditionDetails>
        <endorsementDetails>
          <endorsement>
               <endorsementType />
               <endorsementSubType />
               <endorsementCreateDate />
               <endorsementEndDate />
          </endorsement>
        </endorsementDetails>
        <undertakingDetails>
          <undertaking>
               <undertakingType>University Lectures</undertakingType>
               <undertakingApprovedDate>2014-12-18</undertakingApprovedDate>
               <undertakingText>The Doctor will undertake to deliver lectures to uni students.</undertakingText>
          </undertaking>
        </undertakingDetails>
          <notationDetails>
            <notationDetail>
               <notationCreateDate>1980-09-11</notationCreateDate> 
               <notationEndDate>2016-09-11</notationEndDate>
           <notation>Ineligible Orderly</notation>
            </notationDetail>
          </notationDetails>
        </registration>
    </registrationDetails>
    <employmentDetails>
      <positionTitle>Dr Dre</positionTitle>
      <sponsorOrganisationName>Aftermath Hospital</sponsorOrganisationName>
      <sponsorOrganisationContact>Eminem</sponsorOrganisationContact>
    </employmentDetails>
  </person>
  <person>
    <contactID>4400139361</contactID>
    <personalDetails>
      <givenName>Suzanne</givenName>
      <middleName>Lillian</middleName>
      <familyName>Jones</familyName>
      <title>MS</title>
      <gender>F</gender>
      <dateOfBirth>1971-12-13</dateOfBirth>      
      <dobAccuracy>AAA</dobAccuracy>
      <dateOfDeath>1905-09-22</dateOfDeath>
    </personalDetails>
    <residencyDetails>
      <residencyStatus>Australian Citizen</residencyStatus>
      <visaType />
      <passportNum />
      <countryOfIssue />
    </residencyDetails>
    <addressDetails>
      <address>
        <addressPurposeIndicator>Both preferred and practice</addressPurposeIndicator>
        <floorLevelNum />
      <floorLevelType />
      <lotNum />
        <postcode>4740</postcode>
        <state>QLD</state>
        <streetName>The Avenue</streetName>
        <streetNum>419</streetNum>
        <streetType>ST</streetType>
        <locality>ANDERGROVE</locality>
        <flatUnitNum />
      <flatUnitType />
        <sitePremisesName />
      </address>
    </addressDetails>
    <communications>
      <communication>
        <mediumCode>T</mediumCode>
      <areaCode>07</areaCode>
        <communicationDetails>49281771</communicationDetails>
      </communication>
      <communication>
        <mediumCode>E</mediumCode>
        <communicationDetails>[email protected]</communicationDetails>
      </communication>
    <communication>
        <mediumCode>M</mediumCode>
        <communicationDetails>0404009266</communicationDetails>
      </communication>
    </communications>
    <registrationDetails>
       <registration>
          <registrationID>NMW0000003085</registrationID>
          <profession>Nurse</profession>
          <division>Registered Nurse (Division 1)</division>
          <initialRegistrationStartDate>1994-03-15</initialRegistrationStartDate>
          <registrationType>General</registrationType>
          <registrationSubType />
          <registrationTypeStartDate>1994-03-15</registrationTypeStartDate>
          <registrationStatus>Registered</registrationStatus>
          <registrationStatusStartDate>2011-05-27</registrationStatusStartDate>
          <specialtyDetails>
            <specialtyDetail>
               <specialty>Being Excellent</specialty>
               <fieldOfSpecialtyPractice>Excellence</fieldOfSpecialtyPractice>
           <specialtyPracticeStartDate>2008-05-29</specialtyPracticeStartDate>
           <specialtyPracticeEndDate>2018-11-15</specialtyPracticeEndDate>
            </specialtyDetail>
          </specialtyDetails>
          <conditionDetails>
            <condition>
               <applicationRegistrationCondition>REJECTED</applicationRegistrationCondition>
               <conditionApprovedDate>1805-04-08</conditionApprovedDate>
               <conditionDetail>The lazy dog jumped up to bite the fox.</conditionDetail>
            </condition>
        </conditionDetails>
        <endorsementDetails>
          <endorsement>
               <endorsementType>Nurse Practitioner</endorsementType>
               <endorsementSubType>Nurse</endorsementSubType>
               <endorsementCreateDate>2011-04-30</endorsementCreateDate>
               <endorsementEndDate />
          </endorsement>
        </endorsementDetails>
        <undertakingDetails>
          <undertaking>
               <undertakingType>Education</undertakingType>
               <undertakingApprovedDate>2011-05-01</undertakingApprovedDate>
               <undertakingText>The Doctor will undertake training in new Pathology methods.</undertakingText>
          </undertaking>
        </undertakingDetails>
          <notationDetails>
            <notationDetail>
               <notationCreateDate />  
               <notationEndDate />  
           <notation />
            </notationDetail>
          </notationDetails>
        </registration>
    </registrationDetails>
    <employmentDetails>
      <positionTitle />
      <sponsorOrganisationName />
      <sponsorOrganisationContact />
    </employmentDetails>
  </person>
  <person>
    <contactID>6600027368</contactID>
    <personalDetails>
      <givenName>Mary</givenName>
      <middleName>Ann</middleName>
      <familyName>Smart</familyName>
      <title>MRS</title>
      <gender>F</gender>
      <dateOfBirth>1970-10-03</dateOfBirth>      
      <dobAccuracy>AAA</dobAccuracy>
      <dateOfDeath />
    </personalDetails>
    <residencyDetails>
      <residencyStatus>Kiwi</residencyStatus>
      <visaType>Temp</visaType>
      <passportNum>K7777777</passportNum>
      <countryOfIssue>New Zealand</countryOfIssue>
    </residencyDetails>
    <addressDetails>
      <address>
        <addressPurposeIndicator>Both preferred and practice</addressPurposeIndicator>
        <floorLevelNum />
      <floorLevelType />
      <lotNum />
        <postcode>4214</postcode>
        <state>QLD</state>
        <streetName>The Terrace</streetName>
        <streetNum>39</streetNum>
        <streetType>RD</streetType>
        <locality>ASHMORE</locality>
        <flatUnitNum />
      <flatUnitType />
        <sitePremisesName />
      </address>
    </addressDetails>
    <communications>
      <communication>
        <mediumCode>T</mediumCode>
      <areaCode>07</areaCode>
        <communicationDetails>48103280</communicationDetails>
      </communication>
      <communication>
        <mediumCode>E</mediumCode>
        <communicationDetails>[email protected]</communicationDetails>
      </communication>
    <communication>
        <mediumCode>M</mediumCode>
        <communicationDetails>0414003242</communicationDetails>
      </communication>
    </communications>
    <registrationDetails>
       <registration>
          <registrationID>NMW0000114235</registrationID>
          <profession>Midwife</profession>
          <division />
          <initialRegistrationStartDate>1994-02-10</initialRegistrationStartDate>
          <registrationType>General</registrationType>
          <registrationSubType />
          <registrationTypeStartDate>1994-02-10</registrationTypeStartDate>
          <registrationStatus>Registered</registrationStatus>
          <registrationStatusStartDate>2011-05-21</registrationStatusStartDate>
          <specialtyDetails>
            <specialtyDetail>
               <specialty />
               <fieldOfSpecialtyPractice />
           <specialtyPracticeStartDate />
           <specialtyPracticeEndDate />
            </specialtyDetail>
          </specialtyDetails>
          <conditionDetails>
            <condition>
               <applicationRegistrationCondition />
               <conditionApprovedDate />
               <conditionDetail />
            </condition>
        </conditionDetails>
        <endorsementDetails>
          <endorsement>
               <endorsementType>Doctor</endorsementType>
               <endorsementSubType>Quack</endorsementSubType>
               <endorsementCreateDate>1999-01-01</endorsementCreateDate>
               <endorsementEndDate>2057-06-06</endorsementEndDate>
          </endorsement>
        </endorsementDetails>
        <undertakingDetails>
          <undertaking>
               <undertakingType>Community Work</undertakingType>
               <undertakingApprovedDate>2002-02-22</undertakingApprovedDate>
               <undertakingText>The Doctor will undertake community work.</undertakingText>
          </undertaking>
        </undertakingDetails>
          <notationDetails>
            <notationDetail>
               <notationCreateDate>2011-02-10</notationCreateDate> 
               <notationEndDate /> 
           <notation>Eligible midwife</notation>
            </notationDetail>
          </notationDetails>
        </registration>
    </registrationDetails>
    <employmentDetails>
      <positionTitle>Doctor Feelgood</positionTitle>
      <sponsorOrganisationName>Motley Crue Morgue</sponsorOrganisationName>
      <sponsorOrganisationContact>Nikki Sixx</sponsorOrganisationContact>
    </employmentDetails>
  </person>
</medicare>

Answer 1

试试这个（假设您希望每个mediumCode都在单独的行上）：

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
  <xsl:output method="text" media-type="text" encoding="UTF-8" indent="no" />

  <xsl:param name="component"/>

  <xsl:variable name="q" select="'"'" />
  <xsl:variable name="c" select="', '" />

  <xsl:template match="communication">
    <xsl:choose>
      <xsl:when test="$component=4">
        <xsl:value-of select="concat($q,../../contactID,$q)" />
        <xsl:apply-templates />
        <xsl:text>
</xsl:text>
      </xsl:when>
    </xsl:choose>
  </xsl:template>

  <xsl:template match="mediumCode | areaCode | communicationDetails">
    <xsl:value-of select="concat($c,$q,.,$q)" />
  </xsl:template>

  <xsl:template match="contactID" />
</xsl:stylesheet>

我为逗号和引号创建了全局变量，只是为了使其在concat函数调用中更容易阅读。

此样式表通过吐出其 person 祖先的 concatID 来处理任何 communication 元素，然后仅应用模板，这将处理它的三个子元素。

下一个模板以相同的方式处理三个子元素，输出一个逗号，后跟引号中的值。

最后一个模板可防止 contactID 自行输出。默认情况下，XSLT 处理器将按顺序为 XML 树中的每个节点查找模板。如果没有此模板，它将采用其中文本节点的默认行为，即按原样输出。

如果您希望所有通信节点都在一行上，则可以执行以下操作：

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
  <xsl:output method="text" media-type="text" encoding="UTF-8" indent="no" />

  <xsl:param name="component"/>

  <xsl:variable name="q" select="'"'" />
  <xsl:variable name="c" select="', '" />

  <xsl:template match="person">
    <xsl:choose>
      <xsl:when test="$component=4">
        <xsl:apply-templates />
        <xsl:text>
</xsl:text>
      </xsl:when>
    </xsl:choose>
  </xsl:template>

  <xsl:template match="contactID">
    <xsl:value-of select="concat($q,.,$q)" />
  </xsl:template>

  <xsl:template match="mediumCode | areaCode | communicationDetails">
    <xsl:value-of select="concat($c,$q,.,$q)" />
  </xsl:template>
</xsl:stylesheet>

编辑：这是一种解决方案，可以在输出的每一行中生成一致数量的字段：

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
  <xsl:output method="text" media-type="text" encoding="UTF-8" indent="no" />

  <xsl:param name="component"/>

  <xsl:variable name="q" select="'"'" />
  <xsl:variable name="c" select="', '" />

  <xsl:template match="communication[string-length(concat(mediumCode,areaCode,communicationDetails))!=0]">
    <xsl:choose>
      <xsl:when test="$component=4">
        <xsl:value-of select="concat(
            $q,../../contactID,$q,$c,
            $q,mediumCode,$q,$c,
            $q,areaCode,$q,$c,
            $q,communicationDetails,$q,'
'
          )" />
      </xsl:when>
    </xsl:choose>
  </xsl:template>

  <xsl:template match="contactID" />
</xsl:stylesheet>

Answer 2

我对您的代码进行了一些更改以避免迭代。您只需对 communication 元素的索引进行硬编码即可获取其他数据。我认为这在你的情况下是可以接受的。此外，我不知道你为什么使用 normalize-space 函数。如果您的输入文档中没有多个空格，则可以避免这种情况。

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
    <xsl:output method="text" media-type="text" encoding="UTF-8" indent="no" />
    <xsl:strip-space elements="*"/>

    <xsl:param name="component" select="4"/>
    <xsl:template match="medicare">
        <xsl:choose>
            <xsl:when test="$component=4">
                <xsl:apply-templates select="person"/>
            </xsl:when>
        </xsl:choose>
    </xsl:template>

    <xsl:template match="person">
      <xsl:value-of select="concat(
                '"', contactID, '"', ', ', '"', 
                normalize-space(communications/
                communication[1]/mediumCode), '"', ', ', '"', 
                normalize-space(communications/
                communication[1]/areaCode), '"', ', ', '"',   
                normalize-space(communications/
                communication[1]/communicationDetails), '"', ', ', '"', 
                normalize-space(communications/
                communication[2]/mediumCode), '"', ', ', '"', 
                normalize-space(communications/
                communication[2]/communicationDetails), '"', ', ', '"', 
                normalize-space(communications/
                communication[3]/mediumCode), '"', ', ', '"', 
                normalize-space(communications/
                communication[3]/communicationDetails),'"')" />
            <xsl:text>
</xsl:text>
    </xsl:template> 
</xsl:stylesheet>

结果是：

"0123456789", "T", "02", "62881111", "E", "[email protected]", "M", "04140012225"
"5290001890", "T", "02", "92881781", "E", "[email protected]", "M", "04290012333"

---

这里遵循一种更清晰的方法，可以产生相同类型的输出（适用于您的用例非常接近您在问题中显示的数据的情况）：

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
    <xsl:output method="text" media-type="text" encoding="UTF-8" indent="no" />
    <xsl:strip-space elements="*"/>

    <xsl:param name="component" select="4"/>

    <xsl:template match="medicare">
        <xsl:choose>
            <xsl:when test="$component=4">
                <xsl:apply-templates select="person"/>
            </xsl:when>
        </xsl:choose>
    </xsl:template>

    <xsl:template match="person">
        <xsl:value-of select="concat(
            '"', contactID, '"', ', ', '"')"/>
        <xsl:apply-templates select="communications/communication/*"/>
        <xsl:text>
</xsl:text>
    </xsl:template>

    <xsl:template match="communication/*">  
        <xsl:value-of select="concat(., '"')"/>
        <xsl:if test="count(../following-sibling::communication) + 
            count(following-sibling::*)!=0">
            <xsl:value-of select="concat( ', ', '"')"/>
        </xsl:if>   
    </xsl:template> 

</xsl:stylesheet>