If you are working on a Spring project where multiple beans of the same type exist, how would you manage the injection of the correct bean into the dependent object, considering best practices and design principles?

  • Let Spring automatically select and inject the bean based on the primary bean definition.
  • Use the @Autowired annotation with the name attribute to specify the bean name for injection.
  • Use the @Qualifier annotation along with the bean name to specify which bean to inject explicitly.
  • Use the @Resource annotation with the name attribute to specify the bean name for injection.
When multiple beans of the same type exist, the @Qualifier annotation along with the bean name can be used to specify which bean to inject explicitly. This approach adheres to best practices and design principles, providing clear control over bean injection. Using @Resource and @Autowired with name attributes is not the recommended approach, and automatic selection might lead to ambiguity.
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