Spring 5 Design Patterns

The Initializer extension point

This special case of a bean post-processor causes init (@PostConstruct) methods to be called. Internally, Spring uses several BeanPostProcessors (BPPs) CommonAnnotationBeanPostProcessor to enable initialization. The following diagram illustrates the relationship between initializer and BPPs.

Now let's see the following example for the Initializer extension point in XML:

Namespace <context:annotation-config/> explicitly enables many post-processor, let see the following configuration file in XML:

 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ...