Is Spring annotation @Controller same as @Service?

Question

Is Spring annotation @Controller same as @Service?

I have idea about @Controller which can be used for URL mappin

Answer 1

No you can't they are different. When the app was deployed your controller mappings would be borked for example.

Why do you want to anyway, a controller is not a service, and vice versa.

Answer 2

From Spring In Action

As you can see, this class is annotated with @Controller. On its own, @Controller doesn’t do much. Its primary purpose is to identify this class as a component for component scanning. Because HomeController is annotated with @Controller, Spring’s component scanning automatically discovers it and creates an instance of HomeController as a bean in the Spring application context.

In fact, a handful of other annotations (including @Component, @Service, and @Repository) serve a purpose similar to @Controller. You could have just as effectively annotated HomeController with any of those other annotations, and it would have still worked the same. The choice of @Controller is, however, more descriptive of this component’s role in the application.

Answer 3

You can declare a @service as @Controller.

You can NOT declare an @Controller as @Service

@Service

It is regular. You are just declaring class as a Component.

@Controller

It is a little more special than Component. The dispatcher will search for @RequestMapping here. So a class annotated with @Controller, will be additionally empowered with declaring URLs through which APIs are called