Java 使用spring中方法返回的对象注入构造函数

在我的spring应用程序-config.xml中

<bean id=“shapeFactory" class="com.shapes.ShapeFactory" />

<bean id=“shapeHelper" class="com.shape.ShapeHelper">
    <constructor-arg value=“#{shapeFactory.createDefaultShape()}” />
</bean>

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我怎么能调用上面的任何一个方法并使返回的Shape成为shapeHelper构造函数的参数呢？

一种方法是使用工厂主体创建名为Shape的bean

        <bean id="shape " class="..Shape" factory-bean="shapeFactory" factory-method="createDefaultShape">
        <constructor-arg name="argNAme" type="java.lang.Long" value="1">
         <!--all args go here ? THEY WILL passed as  parameters to the method createDefaultShape -->
</constructor-arg>

然后在shapeHelper中，您可以简单地引用该bean

<bean id=“shapeHelper" class="com.shape.ShapeHelper">
    <constructor-arg ref="shape" />
</bean>

---

这取决于要在何处传递参数？在运行时，还是在xml配置时？
        <bean id="shape " class="..Shape" factory-bean="shapeFactory" factory-method="createDefaultShape">
        <constructor-arg name="argNAme" type="java.lang.Long" value="1">
         <!--all args go here ? THEY WILL passed as  parameters to the method createDefaultShape -->
</constructor-arg>

<bean id=“shapeHelper" class="com.shape.ShapeHelper">
    <constructor-arg ref="shape" />
</bean>