Spring - 어디에서나 Spring 컨터이너 Bean 객체 얻어오기

https://bluexmas.tistory.com/497

출처: https://bluexmas.tistory.com/497 [파란크리스마스]

https://crazygui.wordpress.com/2011/09/28/get-to-spring-applicationcontext-from-everywhere-the-clean-way/

https://www.logicbig.com/tutorials/spring-framework/spring-core/javaconfig-methods-inter-dependency.html