Nested tags rock, as you have to deal with only one
level in the heirarchy at a time. I have been running
into some problems using nested tag for recursion,
though. I thought you might help me out while we are
on same subject.
My questions are :
1. Does the nested tag lib require struts to be used ?
I have nested-tag.jar and struts.jar in the
WEB-INF/lib but the application is not based on struts
framework. It is an MVC app but with our own
controller servlet and mapping(like struts-config).
When I tried, I got this dreaded error :
Cannot find message resources under key
org.apache.struts.action.MESSAGE'
javax.servlet.ServletException: Cannot find message
resources under key org.apache.struts.action.MESSAGE
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:494)
This makes me wonder if struts framework is actually
needed for nested tags. Any help would be
appreciated..
2. I can't do a <nested:define> in my included JSP as
I get a null pointer exception.
Main jsp :
<nested:root name="docs">
<nested:nest property="treeNode">
<nested:iterate property="childCollection">
<jsp:include page="docnode.jsp" />
</nested:iterate>
</nested:nest>
</nested:root>
docnode.jsp (this recurses):
<nested:root>
<nested:equal property="showChildren"
value="true">
<nested:define id="imgState"
value="open18x16.gif" />
</nested:equal>
<!-- restof html code-->
<nested:iterate property="childCollection">
<jsp:include page="docnode.jsp" />
</nested:iterate>
</nested:equal>
</nested:root>
What am i doing wrong?
thanks
arvind
--- Jeff Kyser <[EMAIL PROTECTED]> wrote:
> Nested tags rock whereas logic tags, while perhaps
> doing
> the same thing are more cumbersome.
>
> Scoping is much more intuitive - instead of having
> to talk
> about 'myForm.myContainer.myObject, you can just
> use nested:iterate and nested:nest to make your code
> much easier to read. And, since you can write
> snippets
> to the more localized scope, they can be reused on
> multiple
> pages.
>
> And, if that wasn't enough, you can do recursion
> with nested.
>
> See the www.keyboardmonkey.com site for examples,
> etc.
>
> -jeff
>
> On Monday, June 9, 2003, at 08:56 PM, Frances Aleah
> Z. de Guzman wrote:
>
> > what is the difference between nested tags and
> html tags?
> > --
> > Frances Aleah Z. De Guzman
> > SA/Programmer
> > Ingenium Technology, Inc.
> > http://www.ingenium.com.ph
> >
> > Disclaimer :
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