Spring Multiple Implementation of same interface

Question

I have an Interface and multiple implementation classes, around 10, of this interface.

I have a naming convention like prefix + name + suffix so during runtime, I can add @Autowired private Map<String, MyInterface> myImplementations; and then access the implementation class with myImplementations.get() method.

Is there a better way of accessing those implementations? I only know which impl. I needed during runtime, changes depends on the message I received.

Mikhail · Accepted Answer · 2015-07-14 08:06:12Z

3

You can implement BeanFactoryAware interface in your class and then use injected bean factory to get needed implementation:

Interface impl = beanFactory.getBean("interfaceimpl");

or

Interface impl = beanFactory.getBean(InterfaceImpl.class);

answered Jul 14, 2015 at 8:06

Mikhail

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3 Comments

Gokhan Oner Over a year ago

Is is somehow better than my current approach ? Because I need to implement another interface in your case ?

Mikhail Over a year ago

It is more in the "Spring way" of doing things. Moreover, if it happens that you add new implementations and reload context at runtime, you won't need to reconfigure anything, because Spring will do it for you.

Gokhan Oner Over a year ago

Ok, I got your point. I just need to implement BeanFactoryAware once, on the class that I'm doing the job, or a separate one, not all implementations. That's very nice, thanks.

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