Alf*_*rio 30 spring dependency-injection spring-annotations
有没有办法使用注释使用查找方法注入?
鉴于以下课程:
@Service
public abstract class A {
protected abstract createB();
}
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为了使它工作,我必须在spring applicationContext.xml中声明以下内容:
<bean id="b" class="com.xyz.B">
</bean>
<bean id="a" class="com.xyz.A">
<lookup-method name="createB" bean="b"/>
</bean>
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即使我正在使用,<context:component-scan base>我也必须在XML中声明它.我认为这不是一个好方法.
如何用注释做到这一点?
And*_*ich 28
可以使用javax.inject.Provider.非常感谢Phil Webb.
public class MySingleton {
@Autowired
private Provider<MyPrototype> myPrototype;
public void operation() {
MyPrototype instance = myPrototype.get();
// do something with the instance
}
}
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小智 17
org.springframework.beans.factory.ObjectFactory如果您想跟上Spring API,也可以使用它
public class MySingleton {
@Autowired
private ObjectFactory<MyPrototype> myPrototypeFactory;
public void operation() {
MyPrototype instance = myPrototypeFactory.getObject();
// do something with the instance
}
}
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