How to configure json format when using jaxb annotations with jersey - jaxb

Question

I am using jersey to expose a service which uses jaxb annotated classes to configure the look of the json.
I am trying to include the type directive in each json element. I do this by providing a Provider as such:
import org.codehaus.jackson.JsonParser.Feature;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.ObjectMapper.DefaultTyping;
#Provider
#Produces(MediaType.APPLICATION_JSON)
public class CmsContextResolver implements ContextResolver<ObjectMapper> {
ObjectMapper mapper;
public CmsContextResolver() {
mapper = new ObjectMapper();
// #JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include =
// JsonTypeInfo.As.WRAPPER_OBJECT, property = "#type")
mapper.configure(Feature.INTERN_FIELD_NAMES, true);
mapper.enableDefaultTypingAsProperty(DefaultTyping.NON_FINAL, "#type");
}
#Override
public ObjectMapper getContext(Class<?> arg0) {
return mapper;
}
}
And this provider is definitely being picked up.
10 May 2011 3:53:18 PM com.sun.jersey.api.core.ScanningResourceConfig logClasses
INFO: Provider classes found:
class com.afrozaar.cms.service.CmsContextResolver
But it is making no difference. The format of the json is unaffected.
As far as I can tell the problem stems from the fact that jersey is not using jackson to serialize? or that jersey is ignoring my jackson configuration overrides...

Answer 1

I don't know why your code isn't working, but this is what I use:
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.Provider;
import org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider;
#Provider
#Produces(MediaType.APPLICATION_JSON)
public class JsonProvider extends JacksonJaxbJsonProvider {
public JsonProvider() {
super();
setMapper( myConfiguredObjectMapper );
}