如何合并两个XSLT文件实现节点过滤与空节点移除？

现有XML数据 #

<?xml version="1.0" encoding="UTF-8"?>
<root>
   <record>
      <Position>
         <Customer_Cost_EUR>13.218.400.000.000.000</Customer_Cost_EUR>
         t>
         <Charge_Type>cycleCharge</Charge_Type>
         <Customer_Company>GmbH + Co. KG</Customer_Company>
         <Customer_ID>98079</Customer_ID>
         <Kundennummer_customer />
      </Position>
      <Position>
         <Customer_Cost_EUR>23.510.400.000.000.000</Customer_Cost_EUR>
         <Charge_Type>addQuantity</Charge_Type>
         <Customer_ID>98079</Customer_ID>
         <Kundennummer_customer />
      </Position>
      <Position>
         <Customer_Cost_EUR>0</Customer_Cost_EUR>
         <Charge_Type>new</Charge_Type>
         <Customer_ID>98079</Customer_ID>
         <Kundennummer_customer />
      </Position>
   </record>
   <record>
      <Position>
         <Customer_Cost_EUR>23.510.400.000.000.000</Customer_Cost_EUR>
         <Charge_Type>addQuantity</Charge_Type>
         <Customer_ID>98079</Customer_ID>
         <Kundennummer_customer />
      </Position>
      <Position>
         <Customer_Cost_EUR>23.510.400.000.000.000</Customer_Cost_EUR>
         <Charge_Type>worktime</Charge_Type>
         <Customer_ID>98079</Customer_ID>
         <Kundennummer_customer />
      </Position>
   </record>
</root>

需求说明 #

• 移除所有Charge_Type值不为new、renew或cycleCharge的Position节点
• 若某个record节点下没有剩余的Position节点，则移除该record节点

目标XML效果 #

<root>
<record>
      <Position>
         <Customer_Cost_EUR>13.218.400.000.000.000</Customer_Cost_EUR>t>
         <Charge_Type>cycleCharge</Charge_Type>
         <Customer_Company>GmbH + Co. KG</Customer_Company>
         <Customer_ID>98079</Customer_ID>
         <Kundennummer_customer/>
      </Position>
      <Position>
         <Customer_Cost_EUR>0</Customer_Cost_EUR>
         <Charge_Type>new</Charge_Type>
         <Customer_ID>98079</Customer_ID>
         <Kundennummer_customer/>
      </Position>
   </record>
   <record>
      <Position>
         <Customer_Cost_EUR>10</Customer_Cost_EUR>
         <Charge_Type>renew</Charge_Type>
         <Customer_ID>98018</Customer_ID>
         <Kundennummer_customer/>
      </Position>
   </record>
 </root>

现有两个独立XSLT文件 #

第一个（过滤不符合条件的Position） #

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output indent="yes" />

    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>
<xsl:template match="Position[Charge_Type!='renew' and Charge_Type!='new'  and Charge_Type!='cycleCharge'  ]"/>
</xsl:stylesheet>

第二个（移除无有效Position的record） #

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output indent="yes" />

    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>
<xsl:template match="record[not(descendant::Customer_ID)]"/>
</xsl:stylesheet>

合并后的XSLT方案 #

将两个模板整合到同一个XSLT文件中，同时优化record节点的判断逻辑，确保直接检查是否存在符合要求的Position节点：

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output indent="yes" />

  <!-- 身份模板：复制所有未被特殊模板匹配的节点 -->
  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>

  <!-- 移除Charge_Type不符合要求的Position节点 -->
  <xsl:template match="Position[not(Charge_Type='renew' or Charge_Type='new' or Charge_Type='cycleCharge')]"/>

  <!-- 移除没有有效Position节点的record -->
  <xsl:template match="record[not(Position[Charge_Type='renew' or Charge_Type='new' or Charge_Type='cycleCharge'])]"/>

</xsl:stylesheet>

说明 #

• 保留核心身份模板，确保未被过滤的节点正常复制
• 一次处理即可完成Position过滤与空record清理两个需求
• 优化record节点的判断逻辑，直接检查是否存在符合要求的Position，避免原逻辑依赖Customer_ID可能出现的误差

内容的提问来源于stack exchange，提问作者Eminen