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Re: [Resteasy-users] Confused on handling response containing collections in json
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From: Mike M. <Mik...@jd...> - 2013-09-04 20:02:49
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Okay, thanks - so how do I do that? I see Chapter 21 (2.3.5) talks about Maven but we aren't using maven. Do I just need to include the jar or is there something in the web.xml that I need to add to include this 'provider?
Also could someone please address my last question:
"Are we using the Response object incorrectly? What's really the difference between returning List<Customer> vs Response with the List<Customer> in the generic entity?"
-----Original Message-----
From: Bill Burke [mailto:bb...@re...]
Sent: Wednesday, September 04, 2013 2:54 PM
To: res...@li...
Subject: Re: [Resteasy-users] Confused on handling response containing collections in json
Switch to Jackson on the server side. We will be deprecating Jettison in the near future as it is buggy and not being well maintained.
Jackson has all of what Jettison has and more...
But you are right, Jettison produces different JSON.
On 9/4/2013 3:27 PM, Mike Miller wrote:
> We are building a restful api, using 2.3.5 (although I don't think the
> release level matters) and I am a bit confused on response handling
> within RestEasy:
>
> Right or wrong, we made most of our resource methods return Response,
> using the GenericEntity when we wanted to return a collection of
> objects. Testing up to now was in Chrome Advanced Rest Client. We
> have our beans JAXB annotated and the resource 'produces' both
> application/xml and application/json. For example:
>
> @GET
>
> @Produces({"application/json", "application/xml"})
>
> *public*Response find(@ContextUriInfo uriInfo)
>
> {
>
> setupQueryParms(uriInfo.getQueryParameters());
>
> List<Customer> custList = *null*;
>
> *try*{
>
> custList = listAllPaginated();
>
> } *catch*(FinderException e) {
>
> Log./getInstance/().error("FinderException
> caught :", e );
>
> throwException(Response.Status./NOT_FOUND/,
> "Error searching customers");
>
> }
>
> GenericEntity<List<Customer>> entity =
> *new*GenericEntity<List<Customer>>(custList) {};
>
> *return*Response./ok/(entity).build();
>
> }
>
> Now, as part of writing JUnit test cases, I wanted to take the
> response I get back and put it back to object form so that I can then do a set of
> asserts against the object or list of objects returned. I downloaded
> Jackson version 1.9.11 and tried to serialize/marshal the json back to
> object form but keep getting the following error:
>
> Exception in thread "main"
> _org.codehaus.jackson.map.exc.UnrecognizedPropertyException_:
> Unrecognized field "Customer" (Class
> com.jda.portfolio.api.rest.base.Customer), not marked as ignorable
>
> at [Source: C:\PPOSDevelopment\Trunk\API\REST\Server\response.json;
> line: 1, column: 15] (through reference chain:
> com.jda.portfolio.api.rest.base.Customer["Customer"])
>
> Is there a difference between Jackson json and what RestEasy produces, from I think Jettison? I also took the example from User doc section 19.6.1 JSON and JAXB collections/arrays
>
>
>
> [{"foo":{"@test":"bill"}},{"foo":{"@test":"monica}"}}] and tried to marshal that back to object form - getting the same error.
>
>
>
> It seems like from Jackson, I would get something like:
>
> [{"@test":"bill"},{"@test":"monica}"}] for a List<Foo> - the difference being the {foo: } which looks like a wrapper for the object.
>
>
>
> I changed the code to return List<Customer> instead of the Response with GenericEntity including the List<Customer> but the json looks the same.
>
>
>
> What am I doing wrong?
>
>
>
> Are we using the Response object incorrectly? What's really the difference between returning List<Customer> vs Response with the List<Customer> in the generic entity?
>
>
>
> I hope this is clear, but I can provide more details if needed.
>
>
>
>
>
>
>
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> lktrk
>
>
>
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>
--
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com
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