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From "Daniel Le Berre (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (WW-3933) Provide web-fragment.xml for easier deployment on Servlet 3.0 compliant containers
Date Mon, 03 Dec 2012 10:23:58 GMT

    [ https://issues.apache.org/jira/browse/WW-3933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13508627#comment-13508627
] 

Daniel Le Berre commented on WW-3933:
-------------------------------------

The only reliable resource on the topic is I guess the Servlet 3.0 specification, chapter
8.2.1 "Modularity of web.xml" page 65.

The idea would be to have a default filter name for struts 2 default filter in the fragment
(e.g. org.apache.struts2.filter) with a default class and filter mapping.

The definition of another filter with the same name in the web.xml should take precedence
on the fragment:
"4. The web.xml of the web application has the highest precedence when resolving
conflicts between the web.xml, web-fragment.xml and annotations." page 73 of the Servlet 3.0
specification.
                
> Provide web-fragment.xml for easier deployment on Servlet 3.0 compliant containers
> ----------------------------------------------------------------------------------
>
>                 Key: WW-3933
>                 URL: https://issues.apache.org/jira/browse/WW-3933
>             Project: Struts 2
>          Issue Type: Improvement
>          Components: Dispatch Filter
>    Affects Versions: 2.3.7
>            Reporter: Daniel Le Berre
>            Priority: Minor
>             Fix For: 2.5.x
>
>
> Servlet 3.0 specification includes the possibility for libraries to ship web-fragment.xml
files in their META-INF directory to contribute some declarations to the main web.xml file.
> Struts 2 only requires the declaration of a filter in the web.xml file to work. When
building Servlet 3.0 webapp, the web.xml file is often not used at all.
> It would be nice to ship a web-fragment.xml file in struts 2 that declares the PrepareAndExecute
filter to simplify the use of the framework on a servlet 3.0 stack.

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