I'm traying to filter a property of a POJO when converting it to Json:

POJO:

public class City {
private Long id;
private String name;
private State state;


public Long getId()
{
return id;
}

public void setId(Long id)
{
this.id = id;
}

public String getName()
{
return name;
}

public void setName(String name)
{
this.name = name;
}

public State getState()
{
return state;
}

public void setState(State state)
{
this.state = state;
}
}

MixIn:

@JsonAutoDetect(value = JsonMethod.NONE)
public interface CityView
{
@JsonProperty("id")
Long getId();

@JsonProperty("name")
String getName();

@JsonIgnore
State getState();
}


Controller:

@RequestMapping(params = "viewCities", value = URLPaths.REGISTER, method = RequestMethod.POST)
public @ResponseBody
ModelAndView viewCitiesList(HttpServletRequest request)
{
String stateId = request.getParameter("stateCode");

List cities = new ArrayList();
ModelAndView modelAndView = new ModelAndView("jsonView");

try
{
cities = this.entityManagementLogic.getCitiesByStates(state Id);

ObjectMapper mapper = new ObjectMapper();
MappingJacksonJsonView view = new MappingJacksonJsonView();

mapper.getSerializationConfig().addMixInAnnotation s(City.class,
CityView.class);

view.setObjectMapper(mapper);

modelAndView.setView(view);

modelAndView.addObject(cities);

}
catch(Exception e)
{

}
return modelAndView;
}

xml:

<!-- json view, capable of converting any POJO to json format -->
<bean id="jsonView"
class="org.springframework.web.servlet.view.json.M appingJacksonJsonView" />

I always get the property state, somebody know why is this not working? Thank you so much