[Demo] Spring Bean Life Cycle – Callback Interface, Custom Method, Annotation, Aware Interface

http://javasampleapproach.com/spring-framework/spring-bean-life-cycle-callback-interface-custom-method-annotation-aware-interface

Spring Bean Life Cycle is very important because in many applications, we want to create some operations before initializing a Bean or make some operations before bean’s destruction.

This tutorial introduce four ways to control life cycle events of a Bean.

I. Demo

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

III. Overview
1. Bean Life Cycle
2. Goal
To build a simple application that expresses how we can provide post-initialization and pre-destroy methods in a Spring Bean Life Cycle.
3. Project Structure
4. Step to do

IV. Practice
1. Create Spring Boot project
2. Create Class for Bean
3. Create Services
4. Create Spring Bean Configuration Files
5. Add commands to SpringBootApplication Class
6. Run Spring Boot Application & Enjoy Result
– Config maven build:
clean install
– Run project with mode Spring Boot App
– Check results in Console Screen:
---------------------------------------
Call constructor for CustomerServiceImpCustomMethod
post-construct(): perform some initialization after all the setter methods have been called
afterPropertiesSet(): Bean initialization here
customInitBean()
Context has been initialized
Already retrieved Bean from context. Next, show Bean data.
Customer Name: Jack
pre-destroy()
destroy(): Bean destruction here
customDestroyBean()
-----new testing Context-----
-----Spring Aware Interface-----
Call constructor for CustomerServiceImpAwareInterface
setBeanName()
Current Bean Name: customerServiceAware
setBeanClassLoader()
Current ClassLoader Name: sun.misc.Launcher$AppClassLoader
setBeanFactory()
The BeanFactory contains Bean "customerServiceAware"? : true
The BeanFactory contains Bean "customer"? : true
The BeanFactory contains Bean "dummyBean"? : false
setEnvironment()
setResourceLoader()
Current Resource File Name:bean_imp_aware.xml
setApplicationEventPublisher()
setApplicationContext()
All Beans: [customer, customerServiceAware]

IV. Source Code

================related keywork===============
#spring ioc container #springioccontainer
#spring bean xml #springbeanxml
#spring beans tutorial #springbeanstutorial
#beans.xml example #beans.xmlexample
#@bean in spring example #@beaninspringexample
#spring mvc configuration file #springmvcconfigurationfile
#inheritance in spring annotation example #inheritanceinspringannotationexample
#inheritance in spring ioc #inheritanceinspringioc
#spring context inheritance #springcontextinheritance
#spring bean inheritance annotation #springbeaninheritanceannotation
#spring bean abstract class #springbeanabstractclass
#spring parent bean annotation #springparentbeanannotation
#spring abstract bean annotation #springabstractbeanannotation
#spring java configuration inheritance #springjavaconfigurationinheritance
#spring context inheritance #springcontextinheritance
#bean definition inheritance in spring #beandefinitioninheritanceinspring
#spring bean factory example #springbeanfactoryexample