PropertyNotFoundException: Can't set managed bean property

[Edward Chen]

I try to seperate JSF view and controller. But I got error message.

I set up a controller class which has page code. And button action will go to controller method.

// controller   
    Index indexPage; // match to Index.jsp
    Detail detailPage;   // match to Detail.jsp 
    
    public void doAction(){           
        //indexPage.getRequestScope().put("customer",c);
        //detailPage.setCustomer(c);       
        indexPage.gotoPage("/detail.jsp"); // using IBM RAD 6.0        
    }

Faces-config.xml

<managed-bean>
<managed-bean-name>pc_Index</managed-bean-name>
<managed-bean-class>pagecode.Index</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
    <managed-bean>
    <managed-bean-name>pc_Detail</managed-bean-name>
    <managed-bean-class>pagecode.Detail</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>
    </managed-bean>    
 
    <managed-bean>
<managed-bean-name>pc_AppController</managed-bean-name>
<managed-bean-class>me.AppController</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>        
        <managed-property>
            <property-name>indexPage</property-name >
            <value>#{pc_Index}</value>
        </managed-property>
        <managed-property>
            <property-name>detailPage</property-name >
            <value>#{pc_Detail}</value>
        </managed-property>
</managed-bean>

the error message is

[5/11/06 9:51:22:781 EDT] 0000002b ServletWrappe E   SRVE0014E: Uncaught service() exception root cause Faces Servlet: javax.faces.FacesException: #{pc_AppController.doAction}: javax.faces.el.PropertyNotFoundException: Can't set managed bean property: 'detailPage'.
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:79)

Caused by: javax.faces.el.PropertyNotFoundException: Can't set managed bean property: 'detailPage'.
at com.sun.faces.application.ApplicationImpl.createAndMaybeStoreManagedBeans(ApplicationImpl.java:911)

Caused by: javax.faces.FacesException: Can't set managed bean property: 'detailPage'.
at com.sun.faces.config.ManagedBeanFactory.setPropertiesIntoBean(ManagedBeanFactory.java:582)

Caused by: java.lang.NullPointerException
at com.sun.faces.config.ManagedBeanFactory.getScopeForSingleExpression(ManagedBeanFactory.java:988)

 

I read this error, I guess it related to the bean scope. But interesting thing is, in the faces-config xml above, if I take out "detailPage" <managed-property>, it will work.

Any advice? Thanks. BTW, I am using RAD6.0 and WAS 6.0 in this project.