spring-InitializingBean init-method postConstruct

最新推荐文章于 2025-04-01 03:16:04 发布

aBOUNTWINTER

最新推荐文章于 2025-04-01 03:16:04 发布

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本文深入探讨了Spring框架中InitializingBean、@PostConstruct和init-method三种初始化方式的区别及执行顺序，帮助开发者理解如何在bean实例化后进行有效的初始化工作。

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相同点：

InitializingBean,init-method,postConstruct三者都在bean实例化后调用。

不同点：

InitializingBean：

The org.springframework.beans.factory.InitializingBean interface allows a bean to perform initialization work after all necessary properties on the bean have been set by the container. The InitializingBean interface specifies a single method:

void afterPropertiesSet() throws Exception;

postConstruct：

The JSR-250 @PostConstruct Using this annotation means that your beans are not coupled to Spring specific interfaces

init-method：

In the case of XML-based configuration metadata, you use the init-method attribute to specify the name of the method that has a void no-argument signature.

如果三者都配置，执行顺序：

Constructor > @PostConstruct > InitializingBean > init-method