2013/4/20 Jerry Malcolm <[email protected]>:
> I have been searching for several hours for a basic JSTL answer with no
> luck. From what I can tell, JSTL is under the umbrella of Tomcat.
> Hopefully someone can help me out.
>
You are welcome.
> I simply want to use an existing already-parsed DOM (org.w3c.dom.Document
> variable) with JSTL XML tags. In other words, I want to skip the x:parse
> step and just tell x:out and all of the other x tags to pull data from my
> pre-existing pre-parsed DOM:
>
> Document myDOM; // already built by another part of the code
>
1. Have you exposed your Java variable as JspContext attribute?
I mean, pageContext.setAttribute("myDOM", myDOM)?
> I understand basic xpath stuff. But I'm not sure how to tell it to use a
> standard local java variable for the DOM.
>
> I've tried <x:out select="$myDOM/aaaaa/bbbbb"/> and <x:out
> select="${myDOM}/aaaaa/bbbbb"/>
>
2. The first should work.
The second in not valid, neither by JSTL spec, nor by XPath spec.
The latter says,
[36] VariableReference ::= '$' QName
I have not actually tried it, though.
JSTL spec says:
[quote]
An XPath expression must also treat variables that resolve to implementations of
standard DOM interfaces as representing nodes of the type bound to
that interface
by the DOM specification.
[/quote]
1) What is the structure of your document
2) Maybe: try to select a specific XML element and put it into
JspContext's attribute. Then try to output it via <x:out
select="$elem"/>.
> Both give me errors that seem to say it doesn't find a DOM.
>
How this error looks like, exactly, with a stacktrace?
> Every example I can find always assumes I want to start with a true
> non-parsed XML document.
>
> I'm sure I'm missing something obvious. But can someone please help me out
> with the correct syntax?
>
Best regards,
Konstantin Kolinko
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