Spring Webflow + Spring MVC: Action Bean in Java Annotation

Question

I'm using Spring MVC + Spring Webflow 2.

I would like to define a @Bean for an action-state, but i don't know how to do this in Java Annotation, as i get this error:

Method call: Method execute() cannot be found on com.myapp.action.GaraAgenziaAction type

here an example of what i want to do: spring-webflow-no-actions-were-executed

My Bean:

import org.springframework.webflow.execution.Action;
import org.springframework.webflow.execution.Event;
import org.springframework.webflow.execution.RequestContext;

public class GaraAgenziaAction implements Action {

    @Override
    public Event execute(RequestContext rc) throws Exception {                
        return new Event(this, "success");
    }
}

Flow XML:

<transition on="fail" to="gara-agenzie"/>

<transition on="success" to="gara-conferma"/>

My webAppConfig:

@Bean
public Action GaraAgenziaAction()
{
    GaraAgenziaAction garaAgenziaAction = new GaraAgenziaAction();

    return garaAgenziaAction;

}

Thank you very much

UPDATE resolved thanks to @Prasad suggestions:

My Bean (added @Component):

import org.springframework.stereotype.Component;
import org.springframework.webflow.execution.Action;
import org.springframework.webflow.execution.Event;
import org.springframework.webflow.execution.RequestContext;

@Component
public class GaraAgenziaAction implements Action {

    @Override
    public Event execute(RequestContext rc) throws Exception {                
        return new Event(this, "success");
    }
}

My webAppConfig (changed name of the bean with lowercase):

@Bean
public Action garaAgenziaAction()
{
    GaraAgenziaAction beanAction = new GaraAgenziaAction();

    return beanAction;

}

Flow XMl configuration (changed bean name to lowercase and pass flowRequestContext as parameter):

<action-state id="action-agenzie">
    <evaluate expression="garaAgenziaAction.execute(flowRequestContext)"></evaluate>        

    <transition on="fail" to="gara-agenzie"/>

    <transition on="success" to="gara-conferma"/>
</action-state>

Now it's working fine!

Just define GaraAgenziaAction bean in 1) xml bean definitions file if xml is used or 2) use Component annotation on the action and call this in action-state. Also did you observe, you are using same class name for the one implementing interface and the one with Bean annotation? — Prasad
Check the example mentioned in this post:stackoverflow.com/questions/23342621/…, which mostly covers the configuration and access the methods in ClassForThisFlow class in action-state(for SWF 1)/evaluate-action(for SWF 2 and later). Though ClassForThisFlow does not implement action. You can define any method in ClassForThisFlow and access it. — Prasad

Prasad Prasad · Accepted Answer · 2014-07-10T14:09:50

Define the action class in your servlet xml file as:

    <!--Class which handles the flow related actions-->
    <bean id="garaAgenziaAction" class=" com.myapp.action.GaraAgenziaAction">
    </bean>

or annotate it with Component as:

    @Component
    public class GaraAgenziaAction implements Action{
            @Override
            public Event execute(RequestContext rc) throws Exception {                
            return new Event(this, "success");
            }
    }

In your flow xml access it as:

    <action-state id="action-agenzie">
        <evaluate expression="garaAgenziaAction.execute(flowRequestContext)"></evaluate>
        <transition on="fail" to="gara-agenzie"/>
        <transition on="success" to="gara-conferma"/>
    </action-state>

For configuration details you can find it in the answer in this link.

Spring Webflow + Spring MVC: Action Bean in Java Annotation

1 Answers