What is the most appropriate way of injecting daos in services, services in controllers in Spring?

Service and Repository are just "sub-annotations" for Component to specify the bean a bit more (to separete Services from Repositories for more sophisticated stuff). From the point of injection this three are equal.

Service and @Repository are just "sub-annotations" for @Component to specify the bean a bit more (to separete Services from Repositories for more sophisticated stuff). From the point of injection this three are equal. For injection, there are 3: @Resource @Inject @Autowired @Autowired is the most powerful annotation, but @Resource (JSR-250) and @Inject (JSR-330) are standardized.

€” Anyway if you not plan to reuse your application in a non-Spring environment, then I would not pay to many attention to this concern.

See Annotation based configuration in Spring, best Spring Annotation tutorial for me.

I prefer to avoid annotations, especially if they start getting confusing. Nothing wrong with good old getter and setters in this case. Just gotta wire the bean on your own, which isn't so difficult that annotations are necessary.

I have been using this old approach for years with getters and setters and the xml files. But with new version of spring I would like to try the annotations. – Ashish May 16 at 6:16.

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