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## org.springframework.beans.factory.config
Interface BeanFactoryPostProcessor

All Known Subinterfaces:
  BeanDefinitionRegistryPostProcessor

All Known Implementing Classes:
  AspectJWeavingEnabler, ConfigurationClassPostProcessor, CustomAutowireConfigurer, CustomEditorConfigurer, CustomScopeConfigurer, DeprecatedBeanWarner, PlaceholderConfigurerSupport, PreferencesPlaceholderConfigurer, PropertyOverrideConfigurer, PropertyPlaceholderConfigurer, PropertyResourceConfigurer, PropertySourcesPlaceholderConfigurer, ServletContextPropertyPlaceholderConfigurer

    public interface BeanFactoryPostProcessor

Allows for custom modification of an application context's bean definitions, adapting the bean property values of the context's underlying bean factory.

Application contexts can auto-detect BeanFactoryPostProcessor beans in their bean definitions and apply them before any other beans get created.

Useful for custom config files targeted at system administrators that override bean properties configured in the application context.

See PropertyResourceConfigurer and its concrete implementations for out-of-the-box solutions that address such configuration needs.

A BeanFactoryPostProcessor may interact with and modify bean definitions, but never bean instances. Doing so may cause premature bean instantiation, violating the container and causing unintended side-effects. If bean instance interaction is required, consider implementing `BeanPostProcessor` instead.

Since:
  06.07.2003
Author:
  Juergen Hoeller
See Also:
  `BeanPostProcessor`, `PropertyResourceConfigurer`

Method Summary
`void` | `postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)` Modify the application context's internal bean factory after its standard initialization.

Method Detail

### postProcessBeanFactory

    void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory)
                                throws BeansException

  Modify the application context's internal bean factory after its standard initialization. All bean definitions will have been loaded, but no beans will have been instantiated yet. This allows for overriding or adding properties even to eager-initializing beans.

  Parameters:
    `beanFactory` - the bean factory used by the application context
  Throws:
    `BeansException` - in case of errors

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