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Sergey Beryozkin commented on CXF-6902: --------------------------------------- It did not brake the backward compatibility, it fixed a spec compliance issue which is what I said in my previous comment, a TCK test exists which enforces that by default numbers are only supported if it is text/plain. Please also check a JAX-RS 2.0 spec (section on the default providers). If you think about it, the fact CXF 2.7 was 'supporting' numbers when application/json was expected by writing them as invalid JSON sequences (by simply converting them to String) was a genuine bug. Clearly you'd not want that repeated if you'd like a real application/json sequence be reported. However if you'd like you can register a custom MBW/MBR or may be Jackson which will convert these integers. But given the way it worked before for you, where integers were reported as non-JSON sequences, may be a simpler/better way to update Produces to text/plain Thanks for debugging though - it will help you in case you may want to check some other details in the future. Also as I said earlier - please do direct such queries to the users list. Cheers, Sergey > Problem with resource that returns Object with CXF version == 3.1.2 > ------------------------------------------------------------------- > > Key: CXF-6902 > URL: https://issues.apache.org/jira/browse/CXF-6902 > Project: CXF > Issue Type: Bug > Components: JAXB Databinding > Affects Versions: 3.1.2 > Reporter: Balarami Reddy > Assignee: Sergey Beryozkin > > Hello, > We have recently migrated from 2.7 to 3.1.2 and we see a behaviour change in > CXF which blocked us from making progress. > The sample code below gives "No message body writer has been found for > response class Integer" which used to work perfect in CXF 2.7 > This is just sample code only. We have in our product several rest calls > which return integer/long/Object etc based on some calculations. > @GET > @Produces(MediaType.APPLICATION_JSON) > @Path("/getinteger") > public Response getInteger() { > return Response.ok(4).build(); > } -- This message was sent by Atlassian JIRA (v6.3.4#6332)