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https://issues.apache.org/struts/browse/WW-3168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=46614#action_46614
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Musachy Barroso commented on WW-3168:
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I think we should just document it. It is not the same thing catching an
exception from the action method and from the constructor. The constructor
might get called even if without an action request, it is up to the object
factory to instantiate the actions, and in the case of singletons, there is a
good chance they will be created before any request is made. I will document
this.
> Exceptions thrown by constructors are not mapped to actions as condfigured in
> struts.xml
> ----------------------------------------------------------------------------------------
>
> Key: WW-3168
> URL: https://issues.apache.org/struts/browse/WW-3168
> Project: Struts 2
> Issue Type: Improvement
> Components: Core Actions
> Affects Versions: 2.1.6
> Environment: Seen on Linux, with JBoss and JDK 1.6.0.13, but this
> should not matter.
> Reporter: Jan T. Kim
> Priority: Minor
> Fix For: 2.1.8
>
>
> Exception mappings configured as described in
> docs/exception-configuration.html do not seem to affect exceptions thrown by
> constructors but result in a "Unable to instantiate Action" exception.
> If this behaviour is intended I suggest to clarify that in the documentation
> and / or the FAQ.
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