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From "Sergey Beryozkin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-7501) Cannot inject field in ContainerRequestFilter
Date Wed, 13 Sep 2017 11:07:00 GMT

    [ https://issues.apache.org/jira/browse/CXF-7501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16164496#comment-16164496
] 

Sergey Beryozkin commented on CXF-7501:
---------------------------------------

Can a Feature.register(Object) work at least as a short term solution: rather than have FeatureImpl
call back, via SPI, back to CDI, why can't the code calling the Feature instantiate the filter
with the help of CDI and then register it with the Feature  ? 

> Cannot inject field in ContainerRequestFilter
> ---------------------------------------------
>
>                 Key: CXF-7501
>                 URL: https://issues.apache.org/jira/browse/CXF-7501
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 3.1.10
>         Environment: Linux Mint 64 bit, TomEE Plus 7.0.3, JavaEE 7 application using
MVC specification and reference implementation(Libs Attached)
>            Reporter: Jeyvison Nascimento
>            Priority: Critical
>         Attachments: javax-mvc.jar, ozark.jar
>
>
> Hey folks.
> We found a weird behavior while running MVC specification(JSR 371) on TomEE witch CXF.
We have a *ContainerRequestFilter* defined called *JaxRsContextFilter* 
> {code:java}
> @PreMatching
> @Priority(0)
> public class JaxRsContextFilter implements ContainerRequestFilter {
>     @Inject
>     private JaxRsContextProducer jaxRsContextProducer;
>     @Context
>     private Configuration configuration;
>     @Context
>     private HttpServletRequest request;
>     @Context
>     private HttpServletResponse response;
>     public JaxRsContextFilter() {
>     }
>     public void filter(ContainerRequestContext requestContext) throws IOException {
>         this.jaxRsContextProducer.populate(this.configuration, this.request, this.response);
>     }
> }
> {code}
> You can see that we have a JaxRsContextProducer annotated to be injected as a field in
our object but when JAXRSUtils is called to run the the container filters it injects the fields
annotated as *@Context* , not the fields annotated with *@Inject*.
> {code:java}
>  for (ProviderInfo<ContainerRequestFilter> filter : containerFilters) {
>                 try {
>                     InjectionUtils.injectContexts(filter.getProvider(), filter, m);
>                     filter.getProvider().filter(context);
>                 } catch (IOException ex) {
>                     throw ExceptionUtils.toInternalServerErrorException(ex, null); 
>                 }
> {code}
> It causes our filter(*JaxRsContextFilter*) to throw a NullPointerException when filtering
the request because it uses the producer to perform some actions in  this operation.
> I believe this field should be injected as well, not only the *@Context* fields.



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