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关于getBean返回值的一个问题 #22

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gxhao opened this issue Aug 1, 2021 · 1 comment
Open

关于getBean返回值的一个问题 #22

gxhao opened this issue Aug 1, 2021 · 1 comment

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@gxhao
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gxhao commented Aug 1, 2021

如题，在Application-context分支下的AbstractApplicationContext的refresh方法会创建beanFactory并加载bean的属性，之后再实例化bean时执行preInstantiateSingletons方法。
这个方法我有一点看不懂，beanDefinitionMap中已经有四个对象（person、car、customBeanFactoryPostProcessor、customerBeanPostProcessor）。之后再引用getBean方法返回DefaultListableBeanFactory的意义是什么？
QQ图片20210801171145
@DerekYRC
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此处执行getBean方法是为了提前初始化bean实例哈

@DerekYRC DerekYRC reopened this Nov 24, 2022
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@DerekYRC @gxhao