Re: [Resteasy-users] Register custom JSON deserializer

[Marcel O. <ma...@ov...>]

I can confirm this works, as I'm using it myself.

On Wed, Feb 22, 2012 at 1:54 PM, Bill Burke <bb...@re...> wrote:

> Yup, a contextresolver:
>
> http://wiki.fasterxml.com/JacksonFAQJaxRs
>
> Let me know if it works.
>
>
>
> On 2/22/12 7:43 AM, Bill Burke wrote:
> > I don't know whether Jackson's JAX-RS support allows you to plug in a
> > custom ObjectMapper.  It would be something we'd have to add if so.
> >
> > A solution would probably implement a JAX-RS ContextResolver.
> >
> > On 2/21/12 1:58 AM, Richard Kennard wrote:
> >> Hi guys,
> >>
> >> I'm confused as to the recommended approach to deserializing
> non-standard JSON types. In my case there's a Long embedded in the JSON
> tree but I want to
> >> deserialize it to a JPA entity (based on using the Long as an id into
> the database)
> >>
> >> I have looked a variety of documentation, none seem very appealing.
> Here is my thought process:
> >>
> >> 1. The current Exception I get is "JsonMappingException: Can not
> construct instance of ..., problem: no suitable creator method found". I
> guess I could add
> >> a constructor to my JPA entity that takes a Long , but I'd rather not
> have the entity itself accessing the EntityManager. I'd rather have an
> external DTO.
> >>
> >> 2. I can put @JsonSerialize on my JPA entity, and point it to a
> serializer class. But again I'd rather not tie my entity to its DTO.
> >>
> >> 3. I can use @Provider and a custom MessageBodyReader, but this appears
> to want to read the entire HTTP message, not just part of the JSON tree?
> >>
> >> 4. I can register a custom Jackson serializer as explained here
> http://wiki.fasterxml.com/JacksonHowToCustomSerializers. But to do that
> I'll need a custom
> >> ObjectMapper provider as explained here
> http://jersey.576304.n2.nabble.com/Customizing-ObjectMapper-td6234597.htmlAnd I'm very unsure what my 'new
> >> SimpleModule' should look like?
> >>
> >> Can anyone help with a 'best practice' recommendation?
> >>
> >> Regards,
> >>
> >> Richard.
> >>
> >>
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>
> --
> Bill Burke
> JBoss, a division of Red Hat
> http://bill.burkecentral.com
>
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