在 Spring 启动时执行方法 [英] Execute method on startup in Spring

问题描述

应用程序第一次启动时，有没有Spring 3的特性来执行一些方法?我知道我可以使用 @Scheduled 注释来设置方法，它会在启动后立即执行，但随后会定期执行.

Is there any Spring 3 feature to execute some methods when the application starts for the first time? I know that I can do the trick of setting a method with @Scheduled annotation and it executes just after the startup, but then it will execute periodically.

推荐答案

如果应用程序启动"是指应用程序上下文启动"，那么是的，有 很多方法可以做到这一点，最简单的(对于单例 bean，无论如何)使用 @PostConstruct 注释您的方法.查看链接以查看其他选项，但总的来说它们是:

If by "application startup" you mean "application context startup", then yes, there are many ways to do this, the easiest (for singletons beans, anyway) being to annotate your method with @PostConstruct. Take a look at the link to see the other options, but in summary they are:

• 用 @PostConstruct 注释的方法
• afterPropertiesSet() 由 InitializingBean 回调接口定义
• 自定义配置的 init() 方法

• Methods annotated with @PostConstruct
• afterPropertiesSet() as defined by the InitializingBean callback interface
• A custom configured init() method

从技术上讲，这些是 bean 生命周期的钩子，而不是上下文生命周期，但在 99% 的情况下，两者是等效的.

Technically, these are hooks into the bean lifecycle, rather than the context lifecycle, but in 99% of cases, the two are equivalent.

如果您需要专门挂钩上下文启动/关闭，那么您可以实现 Lifecycle 接口，但这可能是不必要的.

If you need to hook specifically into the context startup/shutdown, then you can implement the Lifecycle interface instead, but that's probably unnecessary.

这篇关于在 Spring 启动时执行方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！