Getting binding error information for a JSON form in Spring MVC

I am using Spring MVC 3.2.4. I have a controller method that gets data from an HTML form. The method has the following signature:

@RequestMapping(...)
public String updateProduct(@Valid Product product, BindingResult bindingResult)

In the method, I can get information about data binding (for example, a non-integer value in an integer field) and verification (JSR-303) as follows:

if (bindingResult.hasErrors()) {
    List<FieldError> errors = bindingResult.getFieldErrors();

    for (FieldError error : errors) {
        System.out.println(error.getObjectName() + " - " + error.getCode());
    }
}

I want to change this method so that it can receive data in JSON format instead application/x-www-form-urlencoded. I added an annotation @RequestBodyto the method signature:

@RequestMapping(...)
public String updateProduct(@Valid @RequestBody Product product, BindingResult bindingResult)

. HttpMessageNotReadableException. , , , /. , JSR-303, JSR-303 .

, JSON?

UPDATE:

, , Product String, JSR-303. , . Product .