如何使用XSLT复制子节点并添加额外节点？附XML示例

Here's how to finish your XSLT to achieve the desired result. The key is using the identity transform to preserve all existing content, then adding a targeted template for <employee> elements where we insert the extra node.

Complete XSLT Code #

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
    <!-- Identity transform: copies all nodes and attributes exactly as they are -->
    <xsl:template match="@* | node()">
        <xsl:copy>
            <xsl:apply-templates select="@* | node()"/>
        </xsl:copy>
    </xsl:template>

    <!-- Custom template for <employee> elements: copy existing content + add extra node -->
    <xsl:template match="employee">
        <xsl:copy>
            <!-- Copy all original child nodes (Name, Dept, Designation) -->
            <xsl:apply-templates select="@* | node()"/>
            <!-- Add your custom extra node here; adjust name and value as needed -->
            <Status>Active</Status>
        </xsl:copy>
    </xsl:template>
</xsl:stylesheet>

How It Works #

• Identity Transform: This template acts as a default rule, copying every node and attribute in your input XML. It ensures all existing structure is preserved unless we explicitly override it with another template.
• Employee Template: This template targets only <employee> elements. We first copy the <employee> wrapper, then apply the identity transform to its existing children (so Name, Dept, Designation stay intact). Finally, we insert the new <Status> node—you can rename this or add multiple nodes by including more elements here.

Resulting XML #

When applied to your input XML, the output will look like this:

<root>
    <employees>
        <employee>
            <Name>ABC</Name>
            <Dept>CS</Dept>
            <Designation>sse</Designation>
            <Status>Active</Status>
        </employee>
    </employees>
</root>

内容的提问来源于stack exchange，提问作者pshemek