我问了一个常见的Spring问题:自动转换Spring bean，很多人回答说应该尽可能避免调用Spring的ApplicationContext.getBean()。为什么呢?
我还应该如何访问我配置Spring创建的bean呢?
我在一个非web应用程序中使用Spring，并计划访问LiorH所描述的共享ApplicationContext对象。
修正案
我接受下面的答案，但这里有Martin Fowler的另一种观点，他讨论了依赖注入与使用服务定位器(本质上与调用包装的ApplicationContext.getBean()相同)的优点。
In part, Fowler states, "With service locator the application class asks for it [the service] explicitly by a message to the locator. With injection there is no explicit request, the service appears in the application class - hence the inversion of control. Inversion of control is a common feature of frameworks, but it's something that comes at a price. It tends to be hard to understand and leads to problems when you are trying to debug. So on the whole I prefer to avoid it [Inversion of Control] unless I need it. This isn't to say it's a bad thing, just that I think it needs to justify itself over the more straightforward alternative."
