求XSLT实现XML转换：跳过指定节点并保留结构与XML声明

问题 #

需要通过XSLT实现XML到XML的转换，具体需求：

• 转换后的输出需包含XML声明：<?xml version='1.0' encoding='utf-8'?>
• 跳过输入XML中<G_1>节点下的<ORDER_NUM>135115</ORDER_NUM>元素
• 其余内容（包括结构层次）保持原样输出

现有XSLT输出不符合要求，缺失XML声明和外层结构，相关代码如下：

输入XML #

<?xml version='1.0' encoding='utf-8'?>
<!---------input xml ------------------------------------------>
<DATA_DS>
    <G_1>
        <ORDER_NUM>135115</ORDER_NUM>
        <ACK_HEADER>
            <SENDER>9211111</SENDER>
            <RECEIVER>92511111</RECEIVER>
            <TRANSACTION_SET>CANCELED</TRANSACTION_SET>
            <ORDER_NUM>111115</ORDER_NUM>
            <ACK_LINE>
                <GL_COMPANY_ID>16881</GL_COMPANY_ID>
                <GL_DIVISION_ID>54880</GL_DIVISION_ID>
                <ITEM_DIVISION_ID>A</ITEM_DIVISION_ID>
            </ACK_LINE>
            <ACK_LINE>
                <GL_COMPANY_ID>161</GL_COMPANY_ID>
                <GL_DIVISION_ID>500</GL_DIVISION_ID>
                <ITEM_DIVISION_ID>G</ITEM_DIVISION_ID>
            </ACK_LINE>
        </ACK_HEADER>
    </G_1>
</DATA_DS>

期望输出XML #

<?xml version='1.0' encoding='utf-8'?>
<!--Desired output -->
<DATA_DS>
        <ACK_HEADER>
            <SENDER>9256510000</SENDER>
            <RECEIVER>9253070000</RECEIVER>
            <TRANSACTION_SET>CANCELED</TRANSACTION_SET>
            <ORDER_NUM>35115</ORDER_NUM>
            <ACK_LINE>
                <GL_COMPANY_ID>1601</GL_COMPANY_ID>
                <GL_DIVISION_ID>5400</GL_DIVISION_ID>
                <ITEM_DIVISION_ID>AG</ITEM_DIVISION_ID>
            </ACK_LINE>
            <ACK_LINE>
                <GL_COMPANY_ID>1601</GL_COMPANY_ID>
                <GL_DIVISION_ID>5400</GL_DIVISION_ID>
                <ITEM_DIVISION_ID>AG</ITEM_DIVISION_ID>
            </ACK_LINE>
        </ACK_HEADER>
</DATA_DS>

尝试的XSLT #

<?xml version='1.0' encoding='utf-8'?>
<!--Tried with this xslt -->
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml" encoding="utf-8" indent="yes"/>
    <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>
    <xsl:template match="/">
        <xsl:for-each select="DATA_DS">

    <xsl:for-each select="G_1">
            <xsl:for-each select="ACK_HEADER">
                
                <xsl:element name="Sender">
                    <xsl:value-of select="SENDER"/>
                </xsl:element>
                <xsl:element name="RECEIVER">
                    <xsl:value-of select="RECEIVER"/>
                </xsl:element>
        
<xsl:for-each select="ACK_LINE">
                    <SoHeader>Line start here</SoHeader>
                    <xsl:element name="GL_COMPANY_ID">
                        <xsl:value-of select="GL_COMPANY_ID"/>
                    </xsl:element>
                    <xsl:element name="GL_DIVISION_ID">
                        <xsl:value-of select="GL_DIVISION_ID"/>
                    </xsl:element>
                    </xsl:for-each>
                <!-- ACK_LINE -->
            </xsl:for-each>
            <!-- ACK_HEADER -->
        </xsl:for-each>
        <!-- DATA_DS -->
    
</xsl:for-each>
    </xsl:template>
</xsl:stylesheet>

当前错误输出 #

<!--got this output -->
<SENDER>9256510000</SENDER>
   <RECEIVER>9253070000</RECEIVER>
   <TRANSACTION_SET>CANCELED</TRANSACTION_SET>
   <PO_NUMBER>40X293825</PO_NUMBER>
   <PO_DATE>20220119</PO_DATE>
   <SO_NUMBER>35115</SO_NUMBER>
   <GL_COMPANY_ID>1601</GL_COMPANY_ID>
   <GL_DIVISION_ID>5400</GL_DIVISION_ID>
   <ITEM_DIVISION_ID>AG</ITEM_DIVISION_ID>
   <HEADER_ALLOWANCE_TYPE/>

正确XSLT方案 #

<?xml version='1.0' encoding='utf-8'?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <!-- 配置输出，确保包含XML声明、UTF-8编码及缩进 -->
    <xsl:output method="xml" encoding="utf-8" indent="yes" omit-xml-declaration="no"/>

    <!-- 身份模板：默认复制所有节点和属性 -->
    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <!-- 跳过G_1节点下值为135115的ORDER_NUM元素 -->
    <xsl:template match="G_1/ORDER_NUM[text()='135115']"/>

    <!-- 移除G_1外层标签，直接输出其子节点 -->
    <xsl:template match="G_1">
        <xsl:apply-templates select="@*|node()"/>
    </xsl:template>
</xsl:stylesheet>

方案说明 #

1. XML声明保障：通过<xsl:output>的omit-xml-declaration="no"参数，强制输出XML声明，同时指定编码和缩进格式。
2. 默认内容保留：身份模板实现了所有节点和属性的默认复制，确保大部分内容原样输出。
3. 精准跳过目标元素：通过匹配G_1/ORDER_NUM[text()='135115']，用空模板直接跳过该节点的输出。
4. 移除G_1标签：匹配G_1节点时，仅输出其子节点，实现期望输出中去掉<G_1>外层标签的效果。

内容的提问来源于stack exchange，提问作者murali b