Why does Spring's @Configurable sometimes work and sometimes not?

Question

I\'m trying to use automatic dependency injection via Spring\'s @Configurable annotation w/ @Resource on the fields needing injection. This involved some setup, like passing

Answer 1

I found the reason; because custom beans register without order. If your bean was used before the Spring bean org.springframework.context.config.internalBeanConfigurerAspect was loaded, then @Configurable autowire will not work. And my solution is like below:

@Configuration
@EnableTransactionManagement(mode = AdviceMode.ASPECTJ)
@EnableLoadTimeWeaving(aspectjWeaving = AspectJWeaving.ENABLED)
@EnableSpringConfigured
@ComponentScan(basePackages = "zhibo")
public class AppConfig extends WebMvcConfigurationSupport {

    @Bean
    public DemoProcessor demoProcessor() {
        return new DemoProcessor();
    }
}


public class DemoProcessor implements BeanPostProcessor,BeanDefinitionRegistryPostProcessor {

@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
    return BeanPostProcessor.super.postProcessAfterInitialization(bean, beanName);
}
@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
    String[] beanDefinitionNames = beanFactory.getBeanDefinitionNames();
    Stream.of(beanDefinitionNames).forEach(System.err::println);
}
@Override
public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
    String[] beanDefinitionNames = registry.getBeanDefinitionNames();
    Map zhiboBeans = new LinkedHashMap<>();
    //1. remove your beans. let spring's beans go ahead
    Stream.of(beanDefinitionNames).forEach(beanName->{
        BeanDefinition bd = registry.getBeanDefinition(beanName);
        if(bd.getBeanClassName()!=null && bd.getBeanClassName().startsWith("zhibo.")) {
            registry.removeBeanDefinition(beanName);
            zhiboBeans.put(beanName, bd);
        }
    });
    //2. register your beans again
    zhiboBeans.forEach((k,v)->registry.registerBeanDefinition(k, v));
    }
}