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From "Sergey Beryozkin (JIRA)" <>
Subject [jira] [Commented] (CXF-6437) @Produces has no effect if the annotated method returns void when using ClientProxy
Date Fri, 05 Jun 2015 11:25:00 GMT


Sergey Beryozkin commented on CXF-6437:

Thanks for the update, good you've found a workaround. My general concern was that checking
Produces in void cases would likely cause some side-effects, and given many viable alternatives
are available for proxies I thought it was reasonable to avoid checking it. Cheers

> @Produces has no effect if the annotated method returns void when using ClientProxy
> -----------------------------------------------------------------------------------
>                 Key: CXF-6437
>                 URL:
>             Project: CXF
>          Issue Type: Wish
>          Components: JAX-RS
>    Affects Versions: 2.7.16
>            Reporter: Serhiy Yakovyn
>            Assignee: Sergey Beryozkin
>             Fix For: Invalid
> @Produces has no effect on CXF if the annotated method returns void. The "accept" is
set to default "\*/\*".
> Though it looks right for successful calls of the method, it starts causing issues when
there are different type of responses in case of an error.
> For example:
> {code}
>  @PUT
>  @Path("{id}/info")
>  @Consumes(MediaType.APPLICATION_JSON)
>  @Produces(MediaType.APPLICATION_JSON)
>  void setInfo(@PathParam("id") String documentId, StorageObject newInfo);
> {code}
> No response is expected on success.
> However when the passed StorageObject contains some invalid data the server responds
with "HTTP/1.1 400 Bad Request" and the body contains detailed information about which fields
contain invalid values.
> That information can be send either as JSON or as XML data, but I cannot make CXF to
specify which format I want the error to be sent in.
> The issue is in
> org.apache.cxf.jaxrs.client.ClientProxyImpl.setRequestHeaders(MultivaluedMap<String,
String>, OperationResourceInfo, boolean, Class<?>, Class<?>)
> method, namely in lines 359-360 (cxf-rt-frontend-jaxrs-2.7.16.jar):
> {code}
>             } else if (responseClass == Void.class || responseClass == Void.TYPE) {
>                 accepts = Collections.singletonList(MediaType.WILDCARD_TYPE);
> {code}
> which I would like to remove.
> As a workaround I'm using my own Void class not to satisfy the above part of the if statement

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