<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="#all">
<xsl:template match="/">
<xsl:variable name="some-attribute">
<xsl:attribute name="test">value</xsl:attribute>
</xsl:variable>
<test>
<xsl:copy-of select="$some-attribute" />
</test>
</xsl:template>
</xsl:stylesheet>
解决方法
If a variable-binding element has no select attribute and has
non-empty content (that is,the variable-binding element has one or
more child nodes),and has no as attribute,then the content of the
variable-binding element specifies the supplied value. The content of
the variable-binding element is a sequence constructor; a new document
is constructed with a document node having as its children the
sequence of nodes that results from evaluating the sequence
constructor and then applying the rules given in 5.7.1 Constructing
Complex Content. The value of the variable is then a singleton
sequence containing this document node. For further information,see
9.4 Creating implicit document nodes.
实质上,没有select属性且没有as属性的变量的值是文档节点.
不可能在示例中修改变量以使用select,但可以将其更改为用作：
<xsl:variable name="some-attribute" as="item()*"> <xsl:attribute name="test">value</xsl:attribute> </xsl:variable>
