null pointer while trying to ajaxify an <h:inputText>

[goutham.rao]

Good Evening,

I am a bit of a newbie to primefaces and here is a problem I am trying to solve. I have a simple input component that I'm trying to Ajaxify using p:ajax and below is my UI

Code: Select all

  <h:form id="simpleForm">
            Enter your name and Tab out <h:inputText id="nameInput" value="#{Person.firstName}" required="true" valueChangeListener="#{Person.validatePassword}">
                                                      <p:ajax process="nameInput" event="blur" update="msgs" />
                                                      </h:inputText>
                                                      <p:message for="nameInput" id="msgs" showDetail="true"/>
         
   </h:form>

This works if I change

<p:message> to <p:messages>

Code: Select all

  <h:form id="simpleForm">
            Enter your name and Tab out <h:inputText id="nameInput" value="#{Person.firstName}" required="true" valueChangeListener="#{Person.validatePassword}">
                                                       <p:ajax process="nameInput" event="blur" update="msgs" />
                                                       </h:inputText>
                                                       <p:messages id="msgs" showDetail="true"/>
         
        </h:form>

I have a simple backing bean method:

Code: Select all

@ManagedBean(name="Person")
@RequestScoped
public class Person {

    private String firstName;

    /** Creates a new instance of Person */
    public Person() {
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public void validatePassword(ValueChangeEvent evt)
    {
        FacesContext context = FacesContext.getCurrentInstance();
        
        context.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,this.firstName + " is valid", "Hello "+firstName));
        
    }
}

And the error message is :

SEVERE: Error Rendering View[/person.xhtml]
java.lang.NullPointerException
at org.primefaces.component.message.MessageRenderer.encodeEnd(MessageRenderer.java:65)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:878)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1617)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:848)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1610)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1613)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1613)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:379)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:126)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:127)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:311)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1522)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)

Dev Env:
Java 6, Primefaces 2.0 in Glassfish 6.8:
I have a feeling that I'm doing a very rookie mistake and hence I'm knocking your doors.Please can some one clarify.

Best Regards,
Goutham

[cagatay.civici]

Hi Goutham,

Welcome to forum and PrimeFaces.

This issue is fixed in current 2.0.1 snapshot builds, please try with a nightly build from;

http://repository.prime.com.tr/org/prim ... -SNAPSHOT/

[goutham.rao]

Hello Cagatay,

Thanks for taking the time out to reply , I just found the issue list on your wiki. Next time I shall have a peek before posting.

I would like to confirm that this works fine for me.

Regards,
Goutham

[cagatay.civici]

Thanks for confirming Goutham. Glad it works for you now.