Java – annotation based configuration hierarchy

We use the @ configuration class for Java - based spring configuration I'm trying to set the hierarchy of annotationconfigapplicationcontext

It seems to work Because I can automatically use beans from the parent context as members of beans created from one of the child contexts

But I didn't manage the auto - assembled bean from the parent context to the @ configuration class file, which is very convenient They are all empty

// parent context config
@Configuration
public class ParentContextConfig{
  @Bean parentBeanOne...
  @Bean parentBeanTwo...
}

// child context config
@Configuration
public class ChildContextConfig{
  @Autowired parentBeanOne

  @Bean childBeanOne...
}

// a sample bean
@Component
public class ChildBeanOne{
  @Autowired parentBeanTwo
}

In this example, what I get is that parentbeantwo is created correctly, while parentbeanone is not automatically assembled (null) to the configuration file

What did I miss?

Solution

I think spring wants you to use standard Java hierarchy rules to parent and child configuration objects That is, let the child configuration class extend the parent configuration class