Sheesh, that works like a dream, thanks ...
Can't think how I missed that bit in the book.
Preparable, marvelous.
lyallex
On Wed, Jul 9, 2008 at 5:04 PM, Jim Kiley <[EMAIL PROTECTED]> wrote:
> I think in this situation I would have SomeAction implement Preparable, and
> put someComponent's initialization into the prepare() method, if I could get
> away with it. I realize that might not be possible in your situation, but
> not knowing more details it's my first suggestion.
>
> jk
>
> On Wed, Jul 9, 2008 at 12:00 PM, Lyallex <[EMAIL PROTECTED]> wrote:
>
>> Hi
>>
>> I have a question about handling Exceptions in Action constructors
>>
>> I have the following constructor in an Action
>>
>> public SomeAction() throws BusinessComponentException {
>> someComponent = new SomeBusinessComponent();
>> }
>>
>> Now when an instance of this Action is instantiated it may be the case
>> that the SomeBusinessComponent
>> constructor may throw a BusinessComponentException, the question is
>> how to handle this.
>>
>> As an aside It's also the case that the methods of this action may
>> also throw such an Exception
>> but I can manage that fine.
>>
>> The exception trace reveals the following
>>
>> Unable to instantiate Action, ...
>>
>>
>> com.opensymphony.xwork2.DefaultActionInvocation.createAction(DefaultActionInvocation.java:294)
>>
>> I tried to handle this by putting the following in struts.xml
>>
>> <global-results>
>> <result name="error">/friendlyError.jsp</result>
>> </global-results>
>>
>> <global-exception-mappings>
>> <exception-mapping exception="java.lang.Exception" result="error"/>
>> </global-exception-mappings>
>>
>> But no joy. I think this is because of the way the Exception
>> interceptor does it's thing.
>>
>> Here's what my book (Struts2 in Action) says
>>
>> ...When the exception interceptor executes during its postprocessing
>> phase ... Hmm, that would explain it, there is no post processing
>> phase because execution doesn't get that far. (I think).
>>
>> Does anyone have a pattern for handling exceptions in Action constructors ?
>>
>> many TsIA
>>
>> lyallex
>>
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>
>
> --
> Jim Kiley
> Technical Consultant | Summa
> [p] 412.258.3346 [m] 412.445.1729
> http://www.summa-tech.com
>
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