SpringBoot get the list of @RestController i.e List<@RestController> of the application-CodePudding

Small question regarding SpringBoot application, and how to get the list of classes annotated with @RestController please.

I have a simple SpringBoot application, where I have couple of my own @RestController, such as:

@RestController
public class PersonController {

@RestController
public class OrderController {

@RestController
public class PriceController {

But I am also having in my dependencies, in third party libraries I cannot control, some @RestController as well.

In my application, I would like to get the list of all the @RestController, i.e. all the classes annotated with the annotation @RestController. Something like List<@RestController>, please note the at sign @, it is not List<RestController>

What I have tried so far is to extend all my @RestController with a common interface, and get the List<MyAtRestController>, but this solution will only limit to the @RestController I have control over. Many are in the third party dependencies.

Question, how to get the List of @RestController List<@RestController> from SpringBoot please?

Thank you

CodePudding user response：

As @Andrey B. Panfilov has pointed out in the comment, you can inject ApplicationContext in any of your Beans and make use of the method getBeansWithAnnotation() to retrieve beans with a particular annotation registered in the context.

Example:

@Component          // or any other steriotype annotaion
@AllArgsConstructor // to make use of the constractor injection
public class MyBean {
    
    private ApplicationContext context;

    public Collection<Object> getRestControllers() {
    
        Collection<Object> controllers = context
            .getBeansWithAnnotation(RestController.class)
            .values();
        
        return controllers
    }
}