[jax-rs-spec users] [jsr339-experts] Re: Error responses with entities and the media types

From: Sergey Beryozkin <>
Date: Wed, 13 Mar 2013 21:16:00 +0000

On 13/03/13 20:20, Bill Burke wrote:
> Accept is a suggestion by the client. The server doesn't have to honor it.

This is a bit theoretical :-). JAX-RS servers are supposed to honor it,
though users can bypass that

Cheers, Sergey

> On 3/13/2013 10:20 AM, Sergey Beryozkin wrote:
>> Hi
>> We've talked about it before, in context of the exception mappers
>> mapping the exceptions to Responses with non empty entities,
>> example, the client Accepts application/xml, the server throws an
>> exception, the mapper maps it to
>> Response.status(400).type("text/plain").entity("Bad response").build().
>> and this is exactly what the client should get back despite expecting
>> only XML.
>> However, consider that either the application code or even the exception
>> mapper does
>> Response.status(200).type("application/json").entity(someEntityBean).build().
>> This is clearly an error that is better be detected by the server
>> runtime, before the client code like "client.get(StreamSource.class)"
>> reports something like "{" is not allowed in XML, etc.
>> Should the spec say that if Response status is >=400 and the entity is
>> not null then this Response media type whatever it is, is used;
>> otherwise, if Response is 200, the entity is not null, then the runtime
>> should treat its media type the same way it treats @Produces ?
>> Sergey

Sergey Beryozkin
Talend Community Coders