JSONDoc will extract as much as possible from Spring's annotations like @Controller, @RestController, @RequestMapping, @PathVariable and so on. No additional JSONDoc annotation is needed to document your rest services. It is still needed to annotate objects' classes with JSONDoc's @ApiObject annotation to document them. If you want to produce a richer documentation, you can annotate your controllers and methods with JSONDoc's annotations, that will integrate Spring's ones. Example:
Integrated with JSONDoc annotations
Here is an example on how to use JSONDoc annotations on your Spring MVC controller classes: