BeanFactory和ApplicationContext的区别（Bean工厂和应用上下文）

https://blog.****.net/qq_20757489/article/details/88543252

https://blog.****.net/pythias_/article/details/82752881

Spring中BeanFactory和ApplicationContext的生命周期及其区别详解

https://blog.****.net/qq_32651225/article/details/78323527

registerListeners();