@RestController,@Controller

1. The @RestController annotation in Spring MVC is nothing but a combination of@Controller and @ResponseBody annotation. .
2. The job of@Controller is to create a Map of model object and find a view but @RestControllersimply return the object and object data is directly written into HTTP response as JSON or XML.

@Controller
@ResponseBody
public class MVCController { 
   .. your logic
}

@RestController
public class RestFulController { 
  .... your logic
}

4. The @Controller is a common annotation which is used to mark a class as 

Spring MVC Controller while @RestController is a special controller used in 

RESTFul web services and the equivalent of @Controller + @ResponseBody.