在春季，如何定义两个具有相同名称和不同类的Bean

Question

I have a java project, using Spring. I have defined three classes: BaseClass, SubClass1 and SubClass2. Two SubClassx both extend BaseClass. Now, I need to define two beans, one is in a specific profile:

<bean id="newBean" class="SubClass1">

and

<beans profile="xxx">
    <bean id="newBean" class="SubClass2">
</beans>

they are in different xml files. I use lombok to inject SubClass2 newBean in a Class:

public class WarmUpAgent extends WarmUpAgent {
    @Setter(onMethod = @__(@Required))
    private SubClass2 subClass2;
...

<bean id="warmUpAgent" class="WarmUpAgent">
    <property name="subClass2" ref="newBean" />
</bean>

But when I run the project with profile "xxx", it throws:

IllegalStateException: Cannot convert value of type [SubClass1] to required type [SubClass2] for property 'subClass2'

It seems that fail to overwrite bean newBean with SubClass2, even though I have activated profile "xxx". Is there any way to use profile, to define two beans, with same name and different class?

Thank you very much.

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I put

<bean id="newBean" class="SubClass1">

and

<beans profile="xxx">
    <bean id="newBean" class="SubClass2">
</beans>

in one xml file, and it works. But I'd like to separate them into two xml files, according to the project organization. Any solutions to implement this?

Answer 1

Try using same name instead of id.

<bean name="newBean" class="SubClass1">
<beans profile="xxx">
    <bean name="newBean" class="SubClass2">
</beans>

Answer 2

Try restricting the first bean to the default profile

<beans profile="default">
  <bean id="newBean" class="SubClass1">
</beans>
<beans profile="xxx">
   <bean id="newBean" class="SubClass2">
</beans>