在Spring3中注入applicationContext的最佳实践 [英] Best Practise of injecting applicationContext in Spring3

问题描述

就像上面的标题一样，我对通过直接@Autowired注释注入applicationContext或在单例spring bean中实现ApplicationContextAware接口之间的优缺点感到困惑.

As in the title above, I am confused about pros cons between injecting applicationContext by directly @Autowired annnotation or implementing ApplicationContextAware interface in a singleton spring bean.

在哪种情况下，您更喜欢哪种?为什么?谢谢.

Which one do you prefer in which cases and why? Thanks.

推荐答案

实际上，两者都是不好的.它们都将您的应用程序绑定到Spring框架，从而颠倒了整个控制反转概念.在理想的世界中，您的应用程序根本不应该知道该对象是由ApplicationContext管理的.

Actually, both are bad. Both of them tie your application to the Spring framework, thus inverting the whole inversion-of-control concept. In an ideal world, your application should not be aware of being managed by an ApplicationContext at all.

一旦您选择违反此原则，则如何执行并不重要. ApplicationContextAware是围绕至少从2.0版开始. @Autowired是一种较新的机制，但是它们的工作方式几乎相同.我可能会选择ApplicationContextAware，因为它在语义上清楚了它的含义.

Once you have chosen to violate this principle, it doesn't really matter how you do it. ApplicationContextAware is the legacy version that has been around at least since Version 2.0. @Autowired is a newer mechanism but they work in pretty much the same way. I'd probably go with ApplicationContextAware, because it semantically makes clear what it is about.

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