InitializingBean的作用

InitializingBean是一个接口，它定义了bean的初始化逻辑。当一个bean实现了InitializingBean接口并被Spring容器创建时，Spring容器会在该bean的属性设置完成后调用它的afterPropertiesSet()方法来初始化该bean。 InitializingBean的作用可以是执行一些初始化操作，例如数据的预加载、资源的初始化等。通过实现InitializingBean接口，可以确保bean在被创建之后进行必要的初始化工作，从而保证该bean在使用之前处于正确的状态。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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