Content type for Viewable can be wrong

[michal-trnka]

I am using Viewable in ExceptionMapper. I cannot specify the correct content-type as it always gets overridden by */*.

The ExceptionMapper

 public Response toResponse(NotFoundException e) {
        if (headers.getAcceptableMediaTypes().contains(MediaType.TEXT_HTML_TYPE)) {
            return Response
                    .status(Response.Status.NOT_FOUND)
                    .type(MediaType.TEXT_HTML)
                    .entity(new Viewable("/errors/error_404.ftl", new HashMap<String, Object>()))
                    .build();
        }
        return Response.status(Response.Status.NOT_FOUND).entity("Not found").build();
    }

I have dug into the source code and I found that content type defined on the resource is used and if not found, */* is default one. It completely ignores the type set on the Response object.
Link to the place, where */* is set:

jersey/ext/mvc/src/main/java/org/glassfish/jersey/server/mvc/internal/TemplateHelper.java

Line 108 in 7421515

return Arrays.asList(MediaType.WILDCARD_TYPE);

[michalhabala]

I have the exact same issue and really would appreciate a fix or some workaround. Thanks