spring 需要了解@Bean 的“lite”模式

Question

Full @Configuration vs “lite” @Bean mode? In Spring documentation they have mentioned something about @Bean annotated method without @Configuration annotated class. Can anyone please help me to get perfect example and where can it useful(in which case)?

https://docs.spring.io/spring-framework/docs/current/reference/html/core.html#beans-standard-annotations (Concept: 1.12.1)

Answer 1

When a @Bean method is declared within a @Component annotated class or a plain class, it is not proxied and behaves as a normal java method - so it does not return an instance from the spring container but rather creates a new instance.

This article contains an explanation with examples - https://irena-sayv.medium.com/spring-bean-annotation-what-how-and-why-24f7abe20f83

Answer 2

It is not useful and should be avoided.