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From Paulo Borges <>
Subject RE: ExceptionMapper and Media Types
Date Fri, 19 Aug 2011 13:03:21 GMT

This may seem like an over kill but here is how I do it.

 I have a String instance variable in my Exception classes with default set to Media type
json and before I throw the exception I set the value to the appropriate media type [if not
JSON]  and in my Exception Mapper the Response object uses the media type set for the exception.

Subject: Re: ExceptionMapper and Media Types
Date: Thu, 18 Aug 2011 12:20:06 -0500

Thanks Michael... That is actually what I started doing today. Still not working. Tracing
to the code and so far it seems there is something wrong picking the right produces method
in the entity I'm returning. Also, I had to set the type on the response in the mapper. It
just seem that winks forgets about media type when exception handling. 

Gino B.
On Aug 18, 2011, at 9:41 AM, Michael Elman <> wrote:

Why do you need a pair of ExceptionMappers?
ExceptionMapper returns Response, which can contain an entity.
The entity will be serialized based on the Accept header.

On Thu, Aug 18, 2011 at 5:24 PM, Gino Bustelo <> wrote:

I'm looking for a way to control the rendering of an exception based

on the media type. Basically, the same exception can yield an HTML

payload or a JSON structure based on Accept header. I tried to achieve

this with a pair of ExceptionMapper subclasses and the @Produces

annotation. The json mapper is getting call all the times. What am I

doing wrong? I'm think that I'm left with looking at the accept header

in the mapper an producing the different response entities.

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