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Spring trying to understanding BeanPostProcessor

 
Ranch Hand
Posts: 53
Android C++ Java
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I'm newbie to Spring and i'm trying to understand the BeanPostProcessor - postProcessBeforeInitialization and postProcessAfterInitialization.

In short:

1) spring.xml

2) TrianglePostProcessor.java

3) DisplayBeanNamePostProcessor.java

4) DrawingApp.java

Now when i run the DrawingApp, i got the following messages:


In postProcessBeforeInitialization bean = org.tutorial.spring.Point#5f0101fb
In postProcessAfterInitialization bean = org.tutorial.spring.Point#5f0101fb
setPointA
In postProcessBeforeInitialization bean = triangle1
In postProcessAfterInitialization bean = triangle1

The `postProcessBeforeInitialization` as its word says should be before initialization but as you can see from the log, the setPointA is executed first and then the `postProcessBeforeInitialization` ..

Did I miss something?
 
Rancher
Posts: 2759
32
Eclipse IDE Spring Tomcat Server
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The properties of the bean are set right after the bean is created. The BeanPostProcessor.processBeforeInitialization is called before calling the init method of the bean
 
Kim Ming Yap
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Posts: 53
Android C++ Java
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So the BeanPostProcessor and InitializingBean is pretty much the same except that the former can be done for a large group of beans instead of per bean.
Also i noticed that BeanPostProcessor is done before the initializingBean if both of this exists.
But in theory they are the same.
am i right?
 
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