On Wed, 6 Nov 2002, Joel Carklin wrote:
> I'm looking for a tag that will take a hashmap as a attribute, like
> the jstl iterator tag, but instead of iterating over the tag I want to
> be able to display the value by giving it the key. The idea is that a
> user fills in a form and a servlet generates a hashmap of validation
> errors. the key in the hashmap corresponds to the name of the invalid
> form field, and the value that goes with that key is a description of
> the error...
You can do this with JSTL; just don't use the iterator (c:forEach) tag you
mention. Instead, you could use expressions in tags like
<c:out value="${myMap.key}"/>
This will print the value for myMap.get("key"), assuming of course that
the scoped 'myMap' variable is a Map. (Whether it's a HashMap or not
isn't relevant; it's useful to think in terms of interfaces provided by
the Collections framework, not in terms of their implementations.)
--
Shawn Bayern
"JSTL in Action" http://www.manning.com/bayern
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