[jboss-jira] [JBoss JIRA] (WFLY-8693) @Resource not working on Dynamic Servlets

[Matej Novotny (JIRA)]

    [ https://issues.jboss.org/browse/WFLY-8693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13401838#comment-13401838 ] 

Matej Novotny commented on WFLY-8693:
-------------------------------------

I took a glance at this and I think it would make sense if it behaved equally to static servlets in this regard - e.g. if the injection should work.
The specification (3.1 servlet spec, section 4.4.3.5) mentions something along these lines, although it's blurred as they use inappropriate wording - from CDI standpoints, servlet cannot be a managed bean, instead it's non contextual instance.

Implementation-wise, I did some digging as well, but came up empty handed. All I know is that Weld subsystem does *not* provide the injection for static servlets as can be seen in [{{InjectionTargets}}|https://github.com/wildfly/wildfly/blob/master/weld/subsystem/src/main/java/org/jboss/as/weld/injection/InjectionTargets.java#L81]. It in fact skips it on purpose (btw it can be set here which will make it work, but finding out if the class is a dynamic servlet is messy at best).

Perhaps [~swd847] can provide some directions.

> @Resource not working on Dynamic Servlets
> -----------------------------------------
>
>                 Key: WFLY-8693
>                 URL: https://issues.jboss.org/browse/WFLY-8693
>             Project: WildFly
>          Issue Type: Bug
>          Components: Web (Undertow)
>    Affects Versions: 10.1.0.Final
>            Reporter: Dan Siviter
>
> When a dynamic servlet is used then {{@Resource}} does not work. When using {{@WebServlet}} it does inject fine and only appears to be associated with dynamic ones. Test used {{ManagedExecutorService}} but it may apply to more.



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