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springpost-processing

Spring setter dependency injection after all beans have been created

I have a set of Spring beans created using constructor injection. Since there are (by design) circular references to other beans, I'd like to post-process the beans once they are all created to inject the references to other beans.

Initial attempts at using BeanPostProcessor show that the BeanPostProcessor is running after EACH bean is instantiated, not waiting until all have been instantiated.

Does Spring provide a mechanism for post-processing as set of beans after all have been created?

Solution

  • If you're creating the beans in an ApplicationContext, the ApplicationContext fires ApplicationEvents to any registered ApplicationListener callbacks. One of those should tell you when all the beans in the context are wired together via Spring.