如何动态注入spring bean（原型作用域）

Question

I'm using Spring 3.1.1 and in my business logic, I have a loop which requires a new instance of a spring bean (prototype scope) for each iteration.

What is the best method to do this? Must I create my own BeanFactory class which I can inject once into my class, and call upon it every time to produce the bean upon request? When looking at the Spring 3 docs , it seems to imply that I should use ApplicationContext instead. However, using ApplicationContext makes my code Spring dependent.

What is the best method for something like this? Does Spring already provide a factory of sorts that I can leverage?

Answer 1

ApplicationContext is the factory. You don't have to inject it into your class; you instantiate one and use it to create the beans and wire up their dependencies.

I don't understand the comment "using ApplicationContext makes my code Spring dependent." Yes, it does. Do you think DI is worth it or not?

Answer 2

I think you should go with spring. Spring facilitates your need. You can use a method to lookup bean of specific type from application context. So if you make that bean to be prototype. then when you call this special method, you will be returned with a new instance of the bean you want.

You will find it indetails here!

Answer 3

您可以使用自定义范围并使注入Bean代理，并在自定义范围Bean上侦听一些可以注入基础代理Bean的动态事件。