MappingJacksonJsonView return top-level json object

Question

I converted to controller to use ContentNegotiatingViewResolver instead of MessageConverters to support multiple output types. With json, I am using MappingJacksonJsonView:

Answer 1

What's happening is Spring MVC is taking the ModelAndView and serializing it to JSON. Since a ModelAndView just looks like a map, and in this case, you only have one entry in the map with a key name of myObject, that's what the JSON response looks at. In order to get just your object, you need to return just your object instead of a ModelAndView and let Jackson serialize your object to JSON.

Rather than returning a ModelAndView, return a MyObject and annotate the method with @ResponseBody, so your controller method becomes

@RequestMapping(value="/id/{id}", method=RequestMethod.GET, produces="application/json")
public @ResponeBody MyObject getById(@PathVariable (value="id") String id) {
    return doGetById(id);
}