Spring Bean Post Processors » grokonez

Spring Bean Post Processors » grokonez

The Bean Post Processor interface help us provide our own methods before the initialization of beans and likewise after the initialization of the bean.

https://grokonez.com/spring-framework/spring-bean-post-processors

Spring Bean Post Processors

The BeanPostProcessor interface helps us provide our own methods before the initialization of beans and likewise after the initialization of the bean.

BeanPostProcessor are common for all beans in the container where it is defined, so it is different from @PostConstruct, InitializingBean and custom init method which are defined on the bean itself.

Related Article: Spring Bean Life Cycle

I. Technology

- Java 1.8 - Maven 3.3.9 - Spring Tool Suite – Version 3.8.1.RELEASE - Spring Boot: 1.4.0.RELEASE

II. Overview

1. Where is it?

The IoC container calls BeanPostProcessor.postProcessBeforeInitialization() before @PostConstruct and InitializingBean.afterPropertiesSet() method, then calls BeanPostProcessor.postProcessAfterInitialization() (after custom init method). beanpostprocessor-overview

2. Goal

To build a simple application that expresses how we can use Bean Post Processor methods in a Spring Bean Life Cycle.

3. Project Structure

beanpostprocessor-project-structure

4. Step to do

- Create Spring Boot project - Create Class for Bean - Create Service - Create Spring Bean Configuration File - Add commands to SpringBootApplication Class - Run Spring Boot Application & Enjoy Result

III. Practice

1. Create Spring Boot project

Open Spring Tool Suite, on Menu, choose File -> New -> Spring Starter Project, then fill each fields: beanpostprocessor-startproject

Click Next and Finish. Spring Boot project will be created successfully.

https://grokonez.com/spring-framework/spring-bean-post-processors

Spring Bean Post Processors

springbean processor bean

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