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From "Lukasz Lenart (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (WW-4433) ConventionUnknownHandler change breaks exception handling in interceptors.
Date Wed, 08 Apr 2015 05:08:13 GMT

    [ https://issues.apache.org/jira/browse/WW-4433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14484722#comment-14484722
] 

Lukasz Lenart edited comment on WW-4433 at 4/8/15 5:07 AM:
-----------------------------------------------------------

Just implement {{com.opensymphony.xwork2.UnknownHandler}} interface and throw {{NoSuchMethodException}}
- that's all and now register the new handler like this http://struts.apache.org/docs/unknown-handlers.html

BTW. you can help testing 2.3.23 http://markmail.org/thread/oqtssgeesejrobko


was (Author: lukaszlenart):
Just implement {{com.opensymphony.xwork2.UnknownHandler}} interface and throws {{NoSuchMethodException}}
- that's all and now register the new handler like this http://struts.apache.org/docs/unknown-handlers.html

BTW. you can help testing 2.3.23 http://markmail.org/thread/oqtssgeesejrobko

> ConventionUnknownHandler change breaks exception handling in interceptors.
> --------------------------------------------------------------------------
>
>                 Key: WW-4433
>                 URL: https://issues.apache.org/jira/browse/WW-4433
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core Interceptors, Documentation, Plugin - Convention
>    Affects Versions: 2.3.20
>            Reporter: Joseph Wolschon
>            Assignee: Lukasz Lenart
>            Priority: Minor
>             Fix For: 2.3.23
>
>
> Struts 2.3.20 appears to have caused a regression that prevents exceptions thrown from
convention-plugin actions from reaching ExceptionMappingInterceptor. This breaks exception
handling when using the convention-plugin.
> To Reproduce: 
> * Generate a project struts2-archetype-convention archetype using 2.3.20
> * Throw exception in the action. With 2.3.20, a blank page is shown.
> * Change to 2.3.16.3 and you will get the standard struts2 error page.
> The breaking change appears to have been made in WW-4331. This causes error interceptor
code to break (showing a blank page when exceptions are thrown) as DefaultActionInvocation
does not catch an exception from the default UnknownHandler implementation execution, which
would previously re-throw the original exception back up for the interceptors to catch. 
> Workaround:
> We've created our own UnknownHandler implementation that just throws a new NoSuchMethodException,
allowing DefaultActionInvocation to re-throw the original exception so that our error interceptor
can again catch it.



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