ViewScoped Bean cause NotSerializableException

Question

Hello I\'m using a ViewScoped Bean the Problem is that when call it I get the NotSerializableException.

This is the code of my Managed Bean :

@Manage         


        

Answer 1

I posted a solution for this problem on my own question about this same problem, that goes like this: instead of injecting the Spring beans via EL in a @ManagedProperty annotation (executed on the ManagedBean initialization), you obtain the beans evaluating the EL at runtime.

With this approach, your JSF bean should look like this:

@ManagedBean(name="demandesBean")
@ViewScoped
public class DemandesBean implements Serializable {
    private static final long serialVersionUID = 1L;

    private static DemandeService demandeService() {
        return SpringJSFUtil.getBean("demandeService");
    }

    // ... 
    public void doAjouterDemande(ActionListener event) {
        demandeService().createDemande(newDemande, loginBean.getUsername());
        newDemande = new DemandeVO();
    }
    // ...

And here it is the used utility class SpringJSFUtil.java:

import javax.faces.context.FacesContext;

public class SpringJSFUtil {

    public static  T getBean(String beanName) {
        if (beanName == null) {
            return null;
        }
        return getValue("#{" + beanName + "}");
    }

    @SuppressWarnings("unchecked")
    private static  T getValue(String expression) {
        FacesContext context = FacesContext.getCurrentInstance();
        return (T) context.getApplication().evaluateExpressionGet(context,
                expression, Object.class);
    }
}

This eliminates the Spring bean property (at the cost of doing a few more EL evaluations), thus avoiding the serialization issues of having the property in first place.