XSLT开发需求：校验节点值长度并复制指定值

需要编写XSLT实现以下逻辑：

• 遍历XML中所有<containedItemIdentification>节点，检查是否存在<IdentificationType>为Type10的<Identification>子节点
• 若存在该节点，且其<IdentificationValue>的长度≤5，则将该值替换为当前节点所属<LogisticUnitLineItem>下的<serialShippingContainerCode>值
• 若不存在Type10类型的<Identification>节点，则新增该节点，<IdentificationValue>取值为对应<LogisticUnitLineItem>下的<serialShippingContainerCode>

现有XSLT仅能实现不存在时新增节点的功能，无法处理长度校验替换的逻辑，需完善。

输入XML #

<StandardBusinessDocument>
    <receivingAdvice>
        <LogisticUnitLineItem>
            <logisticUnitIdentification>
                <ContainerCode>
                    <serialShippingContainerCode>121212345890</serialShippingContainerCode>
                </ContainerCode>
            </logisticUnitIdentification>
            <ContainmentLine number="1">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>Value1</IdentificationValue>
                        <IdentificationType>Type8</IdentificationType>
                    </Identification>
                    <Identification>
                        <IdentificationValue>4567</IdentificationValue>
                        <IdentificationType>Type10</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
            <ContainmentLine number="2">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>Value2</IdentificationValue>
                        <IdentificationType>Type8</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
        </LogisticUnitLineItem>
        <LogisticUnitLineItem>
            <logisticUnitIdentification>
                <ContainerCode>
                    <serialShippingContainerCode>1309089485</serialShippingContainerCode>
                </ContainerCode>
            </logisticUnitIdentification>
            <ContainmentLine number="1">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>86432509</IdentificationValue>
                        <IdentificationType>Type10</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
            <ContainmentLine number="2">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>6867</IdentificationValue>
                        <IdentificationType>Type10</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
        </LogisticUnitLineItem>
    </receivingAdvice>
</StandardBusinessDocument>

期望输出XML #

<StandardBusinessDocument>
    <receivingAdvice>
        <LogisticUnitLineItem>
            <logisticUnitIdentification>
                <ContainerCode>
                    <serialShippingContainerCode>121212345890</serialShippingContainerCode>
                </ContainerCode>
            </logisticUnitIdentification>
            <ContainmentLine number="1">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>Value1</IdentificationValue>
                        <IdentificationType>Type8</IdentificationType>
                    </Identification>
                    <Identification>
                        <IdentificationValue>121212345890</IdentificationValue>
                        <IdentificationType>Type10</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
            <ContainmentLine number="2">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>Value2</IdentificationValue>
                        <IdentificationType>Type8</IdentificationType>
                    </Identification>
                    <Identification>
                        <IdentificationValue>121212345890</IdentificationValue>
                        <IdentificationType>Type10</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
        </LogisticUnitLineItem>
        <LogisticUnitLineItem>
            <logisticUnitIdentification>
                <ContainerCode>
                    <serialShippingContainerCode>1309089485</serialShippingContainerCode>
                </ContainerCode>
            </logisticUnitIdentification>
            <ContainmentLine number="1">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>86432509</IdentificationValue>
                        <IdentificationType>Type10</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
            <ContainmentLine number="2">
                <containedItemIdentification>
                    <gtin>00000000000000</gtin>
                    <Identification>
                        <IdentificationValue>1309089485</IdentificationValue>
                        <IdentificationType>Type10</IdentificationType>
                    </Identification>
                </containedItemIdentification>
            </ContainmentLine>
        </LogisticUnitLineItem>
    </receivingAdvice>
</StandardBusinessDocument>

现有XSLT代码 #

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:strip-space elements="*"/>
  <xsl:output indent="yes"/>

  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>  

  <xsl:template match="Identification[last()][not(contains(IdentificationType, 'Type10'))]">
    <xsl:copy-of select="."/>
    <xsl:copy>
      <IdentificationValue>
        <xsl:value-of select="ancestor::LogisticUnitLineItem/logisticUnitIdentification/ContainerCode/serialShippingContainerCode"/>
      </IdentificationValue>
      <IdentificationType>Type10</IdentificationType>
    </xsl:copy>
  </xsl:template>  

</xsl:stylesheet>

以下是完善后的XSLT代码，可同时处理修改和新增逻辑：

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:strip-space elements="*"/>
    <xsl:output indent="yes"/>

    <!-- 默认身份转换模板，保留所有未匹配的节点和属性 -->
    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <!-- 匹配需要修改的Type10节点：值长度≤5时替换 -->
    <xsl:template match="Identification[IdentificationType='Type10' and string-length(IdentificationValue) ≤ 5]">
        <xsl:copy>
            <IdentificationValue>
                <xsl:value-of select="ancestor::LogisticUnitLineItem/logisticUnitIdentification/ContainerCode/serialShippingContainerCode"/>
            </IdentificationValue>
            <xsl:copy-of select="IdentificationType"/>
        </xsl:copy>
    </xsl:template>

    <!-- 给没有Type10节点的containedItemIdentification新增节点 -->
    <xsl:template match="containedItemIdentification[not(Identification/IdentificationType='Type10')]">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
            <!-- 新增Type10的Identification节点 -->
            <Identification>
                <IdentificationValue>
                    <xsl:value-of select="ancestor::LogisticUnitLineItem/logisticUnitIdentification/ContainerCode/serialShippingContainerCode"/>
                </IdentificationValue>
                <IdentificationType>Type10</IdentificationType>
            </Identification>
        </xsl:copy>
    </xsl:template>
</xsl:stylesheet>

关键逻辑说明 #

1. 默认模板：保留所有原有节点和属性，确保非目标节点不受影响
2. 修改逻辑：精准匹配IdentificationType为Type10且IdentificationValue长度≤5的节点，替换其值为所属<LogisticUnitLineItem>下的<serialShippingContainerCode>
3. 新增逻辑：匹配所有未包含Type10类型<Identification>节点的<containedItemIdentification>，在其末尾新增符合要求的Type10节点

内容的提问来源于stack exchange，提问作者CHAR