<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="test.xsl"?>
<store>
<items>
<item>a</item>
<item>b</item>
<item>c</item>
</items>
<items>
<item>x</item>
<item>y</item>
<item>z</item>
</items>
</store>

test.xsl
========================================

<?xml version='1.0' encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >

<xsl:template match="items">
<h1>项目 : <xsl:number /></h1>
<xsl:apply-templates/>
</xsl:template>

<xsl:template match="item">
<h3>
<xsl:number level="multiple" format="[1.1] " count="items | item"/>
<xsl:value-of select="."/>
</h3>
</xsl:template>

</xsl:stylesheet>