In Xalan XSLT 1.0, how to pass a variable to a tem

问题:

We are using Xalan XSLT 1.0 in Java and we want to pass a variable to a template match to avoid hard-coding element names in the XSL file. The style sheet compiles, but the date returned is wrong. Are we using the correct syntax?

Possible XML inputs...

 <books>   
    <book/>
    <book/>
 </books>

 <dvds>
     <dvd/>
     <dvd/>
 </dvds>


<xsl:variable name="matchElement" select="'book'"/>
<!-- OR -->
<xsl:variable name="matchElement" select="'dvd'"/>

<xsl:template match="/*[local-name() = $matchElement]">  

回答1:

This xsl:template:

<xsl:template match="/*[local-name() = $matchElement]"> 

is matching from root.

Either remove the / from /* or change it to //* (depending on how the rest of your stylesheet is designed).

Also, if you use xsl:param instead of xsl:variable, you can set the value from the command line.

回答2:

Your variable syntax is correct, but note that it is technically illegal to use variable or parameter references in XSLT 1.0 match patterns. It is possible, however, that Xalan has implemented this behavior outside of the standard. (@DevNull's comment about your expression also applies.)