如何在XSLT中删除文档内属性值仅为数字的@id属性

Here's a clean solution to strip out any @id attributes where the value is purely numeric, while leaving all other @id attributes (and the rest of your XML) untouched.

XSLT 2.0+ Version #

This uses regular expressions for a concise check:

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <!-- Identity template: copies everything by default -->
    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <!-- Match and discard @id attributes that are only digits -->
    <xsl:template match="@id[matches(., '^\d+$')]"/>
</xsl:stylesheet>

Breakdown: #

• The identity template is the backbone here—it copies every node and attribute unless we explicitly say otherwise.
• The second template targets @id attributes where the entire value matches ^\d+$ (one or more digits, nothing else). Since we don't output anything in this template, those attributes get dropped from the final XML.

XSLT 1.0 Version #

If you're stuck with XSLT 1.0 (no regex support), use the translate() function to check for numeric-only values:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <!-- Identity template -->
    <xsl:template match="@*|node()">
        <xsl:copy>
            <xsl:apply-templates select="@*|node()"/>
        </xsl:copy>
    </xsl:template>

    <!-- Remove @id attributes with only digits (XSLT 1.0 compatible) -->
    <xsl:template match="@id[translate(., '0123456789', '') = '']"/>
</xsl:stylesheet>

Breakdown: #

• translate(., '0123456789', '') removes all digits from the attribute value. If the result is an empty string, that means the original value was nothing but digits—so we exclude that @id attribute.

Example Result #

Given your input XML:

<?xml-stylesheet type="text/xsl" href="recursion2.xsl" ?>
<list>
  <book id="B1">
    <label>1</label>
    <title id="1">A Good Story</title>
    <author>James Soul</author>
  </book>
  <book id="B2">
    <label>...</label>
  </book>
</list>

The output will be:

<list>
  <book id="B1">
    <label>1</label>
    <title>A Good Story</title>
    <author>James Soul</author>
  </book>
  <book id="B2">
    <label>...</label>
  </book>
</list>

The <title> element loses its numeric id attribute, while the non-numeric ids on the <book> elements stay exactly as they are.

内容的提问来源于stack exchange，提问作者LearnAWK