From: Ralf Edmund Stranzenbach <ralf_at_reswi.de>
Date: Sun, 1 Jun 2008 22:26:22 +0200

Am 01.06.2008 um 03:26 schrieb Marc Hadley:

> On May 31, 2008, at 8:34 AM, Ralf Edmund Stranzenbach wrote:
>>
>> 1) Content negotiation
>>
>> As far as i can see, the content negotiation based on url
>> extensions (such as .de.xml) does not work.
>> Is there anything - like Restlets TunnelFilter - that needs to be
>> enabled to activate this feature ?
>>
> Did you define the extension to media-type mappings in your
> ApplicationConfig instance ?
>
>>
>> 2) POST request method is *not* accepted by infrastructure
>>
>> The following fragment is part of my UsersResource class.
>>
>> @Path("/users")
>> public class UsersResource {
>> ...
>> @POST
>> @ConsumeMime("application/xml")
>> @ProduceMime("application/xml")
>> public Response createUser(User user) {
>> Session session = HibernateUtil.getSessionFactory().openSession();
>> Transaction tx = session.beginTransaction();
>>
>> user.setId(null);
>> session.save(user);
>> tx.commit();
>> session.close();
>> return Response.ok(user).build();
>> }
>> ...
>>
> Hmm, it looks OK at first glance. What does the
> de.reswi.jersey.domain.User class look like - is it a JAXB class ?

Yes, is is a nonspectacular JAXB and Hibernate annotated class
consisting of a Long identification property and some sample String
type properties. This class works pretty well with all those GET type
methods. That part of server and client application works like a charm.

>> Enclosed you may find the exception message raised by the container:
>>
>> 31.05.2008 14:21:53 com.sun.jersey.api.core.ClasspathResourceConfig
>> init
>> INFO: Root resource classes found:
>> class de.reswi.jersey.resources.UsersResource
>> class de.reswi.jersey.resources.HelloWorldResource
>> 31.05.2008 14:21:53 com.sun.jersey.api.core.ClasspathResourceConfig
>> init
>> INFO: Provider classes found:
>> 31.05.2008 14:21:54
>> com.sun.jersey.impl.application.ResourceMethodDispatcherFactory
>> getDispatcher
>> SCHWERWIEGEND: Error processing method, public
>> javax.ws.rs.core.Response
>> de
>> .reswi
>> .jersey
>> .resources.UsersResource.createUser(de.reswi.jersey.domain.User),
>> for WebResourceInvoker,
>> com
>> .sun
>> .jersey
>> .impl
>> .model
>> .method.dispatch.FormDispatchProvider.java.lang.NullPointerException
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .model
>> .method
>> .dispatch
>> .FormDispatchProvider.processParameters(FormDispatchProvider.java:
>> 178)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .model
>> .method
>> .dispatch.FormDispatchProvider.create(FormDispatchProvider.java:152)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .application
>> .ResourceMethodDispatcherFactory
>> .getDispatcher(ResourceMethodDispatcherFactory.java:60)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .model.method.ResourceHttpMethod.<init>(ResourceHttpMethod.java:48)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .model.method.ResourceHttpMethod.<init>(ResourceHttpMethod.java:41)
>> at
>> com
>> .sun
>> .jersey.impl.model.ResourceClass.processMethods(ResourceClass.java:
>> 231)
>> at
>> com.sun.jersey.impl.model.ResourceClass.<init>(ResourceClass.java:95)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .application
>> .WebApplicationImpl.newResourceClass(WebApplicationImpl.java:272)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .application
>> .WebApplicationImpl.getResourceClass(WebApplicationImpl.java:243)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .application
>> .WebApplicationImpl.processRootResources(WebApplicationImpl.java:675)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .application.WebApplicationImpl.initiate(WebApplicationImpl.java:562)
>> at
>> com
>> .sun
>> .jersey
>> .impl
>> .application.WebApplicationImpl.initiate(WebApplicationImpl.java:433)
>> at
>> com
>> .sun
>> .jersey
>> .spi
>> .container.servlet.ServletContainer.initiate(ServletContainer.java:
>> 385)
>> at
>> com
>> .sun
>> .jersey
>> .spi.container.servlet.ServletContainer.load(ServletContainer.java:
>> 313)
>> at
>> com
>> .sun
>> .jersey
>> .spi.container.servlet.ServletContainer.init(ServletContainer.java:
>> 121)
>>
>> This exception was raised during the discovery phase of the
>> resource classes.
>> Based on my very limited understanding of JAX-RS im confident, this
>> resources basic configuration should be correct.
>>
>> Is there anything i've missed ?
>>
> ---
> Marc Hadley <marc.hadley at sun.com>
> CTO Office, Sun Microsystems.
>
>
>
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