@SpringBootApplication
@Slf4j
public class Application {
    @Entity
    @Data
    static class MyEntity {
        @Id
        @GeneratedValue
        private String id;
    }

    @Repository
    interface MyDao extends JpaRepository<MyEntity, String> {

    }

    @RequiredArgsConstructor
    @Component
    class MyService {
        private final MyDao dao;
        public void someMethod(){}
    }

    @RequiredArgsConstructor
    @Transactional
    @Component
    static class MyTransactedService {
        private final MyDao dao;
        public void someMethod(){}
    }

    @Controller
    @RequiredArgsConstructor
    @Getter
    static class MyController {
        private final MyService myService;
        private final MyTransactedService myTransactedService;
    }

    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(Application.class, args);
        MyController myController = context.getBean(MyController.class);
        MyService myService = myController.getMyService();
        MyTransactedService myTransactedService = myController.getMyTransactedService();
        log.info("myController bean class: {}", myController.getClass());
        log.info("myService bean class: {}", myService.getClass());
        log.info("myTransactedService bean class: {}", myTransactedService.getClass());
    }
}