org.springframework.beans.factory.support.DefaultSingletonBeanRegistry#earlySingletonObjects
找了个项目跑了一遍，没看到里面写入东西过~ 0==modCount
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Supplement 1 Nov 20, 2019
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和它有关吗？
DefaultListableBeanFactory#getBeansOfType(Class<T>, boolean, boolean)allowEagerInit whether to initialize lazy-init singletons and objects created by FactoryBeans (or by factory methods with a "factory-bean" reference) for the type check. Note that FactoryBeans need to be eagerly initialized to determine their type: So be aware that passing in "true" for this flag will initialize FactoryBeans and "factory-bean" references.
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两者有关系吗？
Supplement 2 Nov 20, 2019
不好意思，看错了！既然提到了也索性问下 allowEagerInit 这个拿来干嘛的？
 | 1 skypyb Nov 20, 2019 这玩意我没记错的话是解决循环依赖的。 你搞几个 Bean 互相依赖试试 |
 | 2 lxk11153 OP see docs.spring.io 1. `Setter-based Dependency Injection` 和 `Annotation-based Container Configuration`(@Resource ...) ---- earlySingletonObjects 就是解决它俩的循环依赖的 2. `Constructor-based Dependency Injection` ---- 它的循环依赖得调整自己的代码 3. allowEagerInit ---- 不知道 |
| 3 lxk11153 OP allowEagerInit ? 还是不知道区别在哪 https://blog.csdn.net/zknxx/article/details/80822352 |
| 4 lxk11153 OP 2. `Constructor-based Dependency Injection` ---- 它的循环依赖得调整自己的代码 see: blog.csdn.net/Revivedsun/article/details/84642316 |
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