Overview

Although #20615 introduced the use of @AliasFor for @Component(value) in stereotype annotations (@Service, @Controller, @Repository, @Configuration, @RestController), the framework does not actually rely on @AliasFor support when looking up a component name via stereotype annotations. Rather, the framework has custom annotation parsing logic in AnnotationBeanNameGenerator#determineBeanNameFromAnnotation() which effectively ignores explicit annotation attribute overrides configured via @AliasFor.

Thus, although we can introduce the use of @AliasFor in @ControllerAdvice and @RestControllerAdvice to create aliases for @Component(value) (see #21108), those aliases will not be honored unless we revise the algorithm in AnnotationBeanNameGenerator.

Related Issues

• 20615

• 21108

• 31093

Deliverables

• [x] Revise AnnotationBeanNameGenerator#determineBeanNameFromAnnotation() to look up @Component stereotype names using @AliasFor semantics.
• [x] Update documentation for @Component to inform users that custom stereotypes can make use of @AliasFor to create an alias for @Component(value).

Comment From: sbrannen

Current work on this feature can be viewed in the following feature branch: https://github.com/spring-projects/spring-framework/compare/main...sbrannen:spring-framework:issues/gh-31089-Component-stereotype-names-and-AliasFor

Comment From: sbrannen

Reopening to update the Annotations page in the wiki.

Comment From: sbrannen

Updated the wiki page.