Hi Dave
On 24/01/12 17:06, hdave wrote:
Thank you Sergey, I'll try that.
I think part of my problem is that I am confused about the Spring bean
configuration of the CXF server. I don't really understand what
<jaxrs:server> is doing inside. Is it setting up an instance of
JAXRSServerFactoryBean?
Also what is supposed to go into<jaxrs:providers>? Anything with an
"@Provider" annotation or anything that implements
ContextResolver<JAXBContext> ?
@Provider is the annotation introduced by JAX-RS to facilitate the
scanning of class resources for custom providers be loaded automatically.
I've never implemented that in CXF because it's kind of non-practical
IMHO. It can not work well in complex environments and is too
coarse-grained (ex, not possible to register multiple instances
configured differently) and it can not be customized. Narrowing down the
class path to scan for the providers is usually more of an effort than
registering a provider from Spring or CXFNonSpringJAXRSServlet :-)
But having said it's something CXF (JAX-RS) lacks even though I do not
see using this feature myself (at the moment at least :-))...
I ask because, looking into it, I am now surprised my Jackson JSON provider
ever worked. It does NOT implement ContextResolver<JAXBContext>. Here is
the class definition:
Custom (JAXB) providers may want to check custom JAXBContexts and
ContextResolver is something that can be used. They need to be
registered as providers and in CXF case this means they have to be
referenced from jaxrs:providers (alongside with other providers)
CXF JAXBElementProvider and JSONProvider will check custom ContextResolver
-----------------------------------------------------------------
@Provider
@Consumes({MediaType.APPLICATION_JSON, "text/json"})
@Produces({MediaType.APPLICATION_JSON, "text/json"})
public class JacksonJsonProvider
implements
MessageBodyReader,
MessageBodyWriter,
Versioned // since 1.6
.....
-----------------------------------------------------------------
How did this work? What is the requirements for being placed into the
<jaxrs:providers> configuration stanza?
Just placing it there tells the runtime it must be a provider :-)
But I've no idea if JacksonJSONProvider checks ContextResolver or not
Cheers, Sergey
Thanks,
Dave
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