Spring原型bean与单例bean和依赖注入相结合。是否只有配置方法？ [英] Spring prototype beans in combination with singleton beans and dependency injection. Is there an approach that is configuration only?

问题描述

我有一个单例bean，每次调用函数都需要返回对不同（新）原型bean的引用。我能想到的唯一方法是通过调用其getBean（）方法以编程方式从BeanFactory / ApplicatioContext中检索新的原型bean实例。代码示例将跟随...

I have a singleton bean which needs for each call of a function to return a reference to a different (new) prototype bean. The only way that I can think of doing this is to programmatically retrieve a new prototype bean instance from the BeanFactory/ApplicatioContext by invoking its getBean() method. Code sample will follow...

有更好的方法吗？只有通过配置，希望？ （我个人怀疑有......）

Is there a better way to do this? Only via configuration, hopefully? (Personally, I doubt there is...)

<bean id="protoBean" scope="prototype"
        class="com.blahblah.ProtoBean" />

<bean id="singletonBean"
        class="com.blahblah.SingletonBean" />

public class ProtoBean {

    ....
}

public class SingletonBean {

    private BeanFactory factory;

    public ProtoBean dispense() {
        return (ProtoBean) factory.getBean("protoBean");
    }

    ....
}

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