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From Jeromy Evans <>
Subject Re: Unable to make Type Conversion work in Struts2
Date Tue, 19 Feb 2008 12:22:58 GMT
Hi Maxx,

Yeah, I've had no success with Enum's either for the same reason, 
however that's definitely fixed in Struts 2.1.1 (XWork 2.1)
In theory, EnumMap should work in 2.1 as well, although I'm not sure 
what can be done about the constructor.

 Jeromy Evans

Maxx wrote:
> Thanks for your answer.
> I partially fixed this, noticing the square brackets notation is the
> same for Lists and Maps, which is not so clear on the related doc page
> (I posted a comment about this, having had a conversion with Dave
> Newton about this in a more recent thread on the mailing-list), as
> well as fixed the getter method which had a bad copy/paste issue.
> But I found another problem that might need some better formulation
> from me, and eventually a Jira: it seems Struts2 isn't able to fully
> support the java.lang.EnumMap object (e.g. using a EnumMap<YourEnum,
> String>), given that it's a particular Map (i.e. all keys are known,
> and they are NOT Strings) without any no-arg constructor - thus
> resulting in some cases in an InstanciationException.
> I tried some work-around with the introduction of an
> "EnumTypeConverter" (extending StrutsTypeConverter), which seemed to
> work fine at first sight, but unfortunately there's a buggy side
> effect: Struts2 then tried to convert the input value (which has to be
> the "value" of the map of type java.lang.String, if referring to the
> above example) ... in the corresponding Enum type of the key!!!
> Even if its declared in the <youraction> with:
> Element_xxx=java.lang.String
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