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Implementación de la inyección de dependencias en Spring Framework: Funcionamiento detallado
- Creado 01/03/2024
- Modificado 01/03/2024
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With annotation @Autowired, as long as getBean is called in the runtime, the returned HelloWorld instance will automatically have user attribute injected with User instance.
How is this behavior implemented by Spring framework?
1. in Spring container implementation's refresh method, all singleton beans will be initialized by default.
When the HelloWorld bean is initialized:
Since it has the following source code:
@Autowired
private User user;In the runtime, this annotation is available in metadata via reflection. In metadata structure below, the targetClass points to HelloWorld bean, and injectedElements points to the User class to be injected.
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