Is it possible to retrieve a Spring bean with prototype scope without using ApplicationContextAware

Question

Using Spring 3.1. If I want to retrieve a bean with prototype scope (i.e. I want a different instance of the class each time), is it possible to retrieve the bean without having to use an ApplicationContextaware class?

This is how I do it at present

@Component
@Qualifier("MyService")
public class MyServiceImpl implements MyService {

    @Override
    public void doSomething() {
        Blah blah = (Blah)ApplicationContextProvider.getContext().getBean("blah");
        blah.setThing("thing");
        blah.doSomething();
    }
}


@Component("blah")
@Scope("prototype")
public class Blah {
    ....
}

where ApplicationContextProvider implements ApplicationContextAware.

Is it possible to do this with annotations or simple Spring configuration without having to use an ApplicationContextAware class?

score 1 · Accepted Answer · answered Jan 04 '13 at 11:37

1

Spring has some fairly sophosticated methods for achieving what you're after...

See the spring documentation: http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/html/beans.html#beans-factory-scopes-other-injection

Searching for spring proxy scope on google also threw up some results...

answered Jan 04 '13 at 11:37

Michael Wiles

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2

Yep, think this is what I'm looking for. This SO question shows how to do it with annotations: http://stackoverflow.com/questions/4503606/annotation-equivalent-of-aopscoped-proxy – CodeClimber Jan 11 '13 at 10:15

score 0 · Answer 2 · answered Jan 04 '13 at 11:42

You don't really need a ApplicationContextAware. You just need a BeanFactory (ApplicationContextAware is just a convinient way to get it).

A bean with scope prototype just means that everytime ApplicationContext.getBean is called a new instance of the bean is created. If you try to inject a prototype bean in a singleton, your prototype bean will be injected once (and so is no more a prototype).

There is something called method injection that may help you if you really need it, but it is more complex than simply calling applicationContext.getBean().

Thanks for response. I'm trying to get away from writing any Spring specific Java be it implementing ApplicationContextAware or using a BeanFactory. — CodeClimber, Jan 11 '13 at 10:23

Is it possible to retrieve a Spring bean with prototype scope without using ApplicationContextAware

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