Primefaces Menu --Erro implementar Exemplo : java.lang.NullPointerException

Programação Java
#1

Pessoal, estou tentando implementar um exemplo do primafaces Menu

e esta dando o erro :

ava.lang.NullPointerException
at org.primefaces.renderkit.OutcomeTargetRenderer.getTargetURL(OutcomeTargetRenderer.java:95)
at org.primefaces.component.menu.BaseMenuRenderer.encodeMenuItem(BaseMenuRenderer.java:77)
at org.primefaces.component.menu.MenuRenderer.encodeContent(MenuRenderer.java:92)
at org.primefaces.component.menu.MenuRenderer.encodeSubmenu(MenuRenderer.java:127)
at org.primefaces.component.menu.MenuRenderer.encodeContent(MenuRenderer.java:96)
at org.primefaces.component.menu.MenuRenderer.encodeMarkup(MenuRenderer.java:73)
at org.primefaces.component.menu.BaseMenuRenderer.encodeEnd(BaseMenuRenderer.java:38)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1764)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:168)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1760)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:402)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121)
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:594)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at c

segue abaixo meu codigo :

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package br.uniplan.controle;

import javax.faces.application.FacesMessage;  
import javax.faces.context.FacesContext;  
import org.primefaces.component.menuitem.MenuItem;  
import org.primefaces.component.submenu.Submenu;  
import org.primefaces.model.DefaultMenuModel;  
import org.primefaces.model.MenuModel;  
  
public class MenuBean {  
  
    private MenuModel model;  
  
    public MenuBean() {  
        model = new DefaultMenuModel();  
          
        //First submenu  
        Submenu submenu = new Submenu();  
        submenu.setLabel("Dynamic Submenu 1");  
          
        MenuItem item = new MenuItem();  
        item.setValue("Dynamic Menuitem 1.1");  
        item.setUrl("#");  
        submenu.getChildren().add(item);  
          
        model.addSubmenu(submenu);  
          
        //Second submenu  
        submenu = new Submenu();  
        submenu.setLabel("Dynamic Submenu 2");  
          
        item = new MenuItem();  
        item.setValue("Dynamic Menuitem 2.1");  
        item.setUrl("#");  
        submenu.getChildren().add(item);  
          
        item = new MenuItem();  
        item.setValue("Dynamic Menuitem 2.2");  
        item.setUrl("#");  
        submenu.getChildren().add(item);  
          
        model.addSubmenu(submenu);  
    }  
  
    public MenuModel getModel() {  
        return model;  
    }     
      
    public void save() {  
        addMessage("Data saved");  
    }  
      
    public void update() {  
        addMessage("Data updated");  
    }  
      
    public void delete() {  
        addMessage("Data deleted");  
    }  
      
    public void addMessage(String summary) {  
        FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, summary,  null);  
        FacesContext.getCurrentInstance().addMessage(null, message);  
    }  
}  


<?xml version="1.0" encoding="UTF-8"?>
<!--
To change this template, choose Tools | Templates
and open the template in the editor.
-->
<!DOCTYPE html>
<html 
      xmlns:ui="http://java.sun.com/jsf/facelets"
                xmlns="http://www.w3.org/1999/xhtml"
                xmlns:h="http://java.sun.com/jsf/html"
                xmlns:p="http://primefaces.org/ui"
                xmlns:f="http://java.sun.com/jsf/core"
      
      >
    <head>
        <title>bem vindo</title>
    </head>
    <body>
        <div>bem vindo </div>
<h:form>  
  
    <p:growl id="messages"/>  
  
    <h3>Plain Menu</h3>  
    <p:menu>  
        <p:submenu label="Ajax Menuitems">  
            <p:menuitem value="Save" actionListener="#{menuBean.save}" update="messages" icon="ui-icon-disk" />  
            <p:menuitem value="Update" actionListener="#{menuBean.update}" update="messages" icon="ui-icon-arrowrefresh-1-w"/>  
        </p:submenu>  
        <p:submenu label="Non-Ajax Menuitem">  
            <p:menuitem value="Delete" actionListener="#{menuBean.delete}" update="messages" ajax="false" icon="ui-icon-close"/>  
        </p:submenu>  
        <p:submenu label="Navigations">  
            <p:menuitem value="External" url="http://www.primefaces.org" icon="ui-icon-home"/>  
            <p:menuitem value="Internal" outcome="/mobile/index" icon="ui-icon-star"/>  
        </p:submenu>  
    </p:menu>  
  
    <h3>Overlay</h3>  
    <p:commandButton id="dynaButton" value="Show" type="button"/>  
    <p:menu overlay="true" trigger="dynaButton" my="left top" at="left bottom">  
        <p:submenu label="Ajax Menuitems">  
            <p:menuitem value="Save" actionListener="#{menuBean.save}" update="messages" icon="ui-icon-disk"/>  
            <p:menuitem value="Update" actionListener="#{menuBean.update}" update="messages" icon="ui-icon-arrowrefresh-1-w"/>  
        </p:submenu>  
        <p:submenu label="Non-Ajax Menuitem">  
            <p:menuitem value="Delete" actionListener="#{menuBean.delete}" update="messages" ajax="false" icon="ui-icon-close"/>  
        </p:submenu>  
        <p:submenu label="Navigations">  
            <p:menuitem value="External" url="http://www.primefaces.org" icon="ui-icon-home"/>  
            <p:menuitem value="Internal" outcome="/mobile/index" icon="ui-icon-star"/>  
        </p:submenu>  
    </p:menu>  
  
    <h3>Programmatic Menu</h3>  
    <p:menu model="#{menuBean.model}"/>  
  
</h:form> 
        
        
    </body>
</html>
#2

Troca head por h:head e depois troque body por h:body…

#3

Tentei fazer isso : mas continua o mesmo problema

<html 
      xmlns:ui="http://java.sun.com/jsf/facelets"
                xmlns="http://www.w3.org/1999/xhtml"
                xmlns:h="http://java.sun.com/jsf/html"
                xmlns:p="http://primefaces.org/ui"
                xmlns:f="http://java.sun.com/jsf/core"
      
      >
    <h:head>
        <title>bem vindo</title>
    </h:head>
    <h:body>
        <div>bem vindo </div>
                <h:form>  

                    <p:growl id="messages"/>  

                    <h3>Plain Menu</h3>  
                    <p:menu>  
                        <p:submenu label="Ajax Menuitems">  
                            <p:menuitem value="Save" actionListener="#{menuBean.save}" update="messages" icon="ui-icon-disk" />  
                            <p:menuitem value="Update" actionListener="#{menuBean.update}" update="messages" icon="ui-icon-arrowrefresh-1-w"/>  
                        </p:submenu>  
                        <p:submenu label="Non-Ajax Menuitem">  
                            <p:menuitem value="Delete" actionListener="#{menuBean.delete}" update="messages" ajax="false" icon="ui-icon-close"/>  
                        </p:submenu>  
                        <p:submenu label="Navigations">  
                            <p:menuitem value="External" url="http://www.primefaces.org" icon="ui-icon-home"/>  
                            <p:menuitem value="Internal" outcome="/mobile/index" icon="ui-icon-star"/>  
                        </p:submenu>  
                    </p:menu>  

                    <h3>Overlay</h3>  
                    <p:commandButton id="dynaButton" value="Show" type="button"/>  
                    <p:menu overlay="true" trigger="dynaButton" my="left top" at="left bottom">  
                        <p:submenu label="Ajax Menuitems">  
                            <p:menuitem value="Save" actionListener="#{menuBean.save}" update="messages" icon="ui-icon-disk"/>  
                            <p:menuitem value="Update" actionListener="#{menuBean.update}" update="messages" icon="ui-icon-arrowrefresh-1-w"/>  
                        </p:submenu>  
                        <p:submenu label="Non-Ajax Menuitem">  
                            <p:menuitem value="Delete" actionListener="#{menuBean.delete}" update="messages" ajax="false" icon="ui-icon-close"/>  
                        </p:submenu>  
                        <p:submenu label="Navigations">  
                            <p:menuitem value="External" url="http://www.primefaces.org" icon="ui-icon-home"/>  
                            <p:menuitem value="Internal" outcome="/mobile/index" icon="ui-icon-star"/>  
                        </p:submenu>  
                    </p:menu>  

                    <h3>Programmatic Menu</h3>  
                    <p:menu model="#{menuBean.model}"/>  

                </h:form>         
    </h:body>
</html>
#4

[quote=evandro_araujo]Tentei fazer isso : mas continua o mesmo problema

[code]

<html xmlns:ui="http://java.sun.com/jsf/facelets" xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:p="http://primefaces.org/ui" xmlns:f="http://java.sun.com/jsf/core" 
  >
<h:head>
    <title>bem vindo</title>
</h:head>
<h:body>
    <div>bem vindo </div>
            <h:form>  

                <p:growl id="messages"/>  

                <h3>Plain Menu</h3>  
                <p:menu>  
                    <p:submenu label="Ajax Menuitems">  
                        <p:menuitem value="Save" actionListener="#{menuBean.save}" update="messages" icon="ui-icon-disk" />  
                        <p:menuitem value="Update" actionListener="#{menuBean.update}" update="messages" icon="ui-icon-arrowrefresh-1-w"/>  
                    </p:submenu>  
                    <p:submenu label="Non-Ajax Menuitem">  
                        <p:menuitem value="Delete" actionListener="#{menuBean.delete}" update="messages" ajax="false" icon="ui-icon-close"/>  
                    </p:submenu>  
                    <p:submenu label="Navigations">  
                        <p:menuitem value="External" url="http://www.primefaces.org" icon="ui-icon-home"/>  
                        <p:menuitem value="Internal" outcome="/mobile/index" icon="ui-icon-star"/>  
                    </p:submenu>  
                </p:menu>  

                <h3>Overlay</h3>  
                <p:commandButton id="dynaButton" value="Show" type="button"/>  
                <p:menu overlay="true" trigger="dynaButton" my="left top" at="left bottom">  
                    <p:submenu label="Ajax Menuitems">  
                        <p:menuitem value="Save" actionListener="#{menuBean.save}" update="messages" icon="ui-icon-disk"/>  
                        <p:menuitem value="Update" actionListener="#{menuBean.update}" update="messages" icon="ui-icon-arrowrefresh-1-w"/>  
                    </p:submenu>  
                    <p:submenu label="Non-Ajax Menuitem">  
                        <p:menuitem value="Delete" actionListener="#{menuBean.delete}" update="messages" ajax="false" icon="ui-icon-close"/>  
                    </p:submenu>  
                    <p:submenu label="Navigations">  
                        <p:menuitem value="External" url="http://www.primefaces.org" icon="ui-icon-home"/>  
                        <p:menuitem value="Internal" outcome="/mobile/index" icon="ui-icon-star"/>  
                    </p:submenu>  
                </p:menu>  

                <h3>Programmatic Menu</h3>  
                <p:menu model="#{menuBean.model}"/>  

            </h:form>         
</h:body>

[/code][/quote]

Primeiramente boa tarde evandro_araujo !!!

Na sua primeira linha de erro:
at org.primefaces.renderkit.OutcomeTargetRenderer.getTargetURL(OutcomeTargetRenderer.java:95)
Está mostrando que não está conseguindo encontrar o caminho especificado na propriedade “outcome”, assim impedindo a renderização do componente.

Faça o seguinte … nesse trecho de código aqui:

<p:submenu label="Navigations"> <p:menuitem value="External" url="http://www.primefaces.org" icon="ui-icon-home"/> <p:menuitem value="Internal" outcome="/mobile/index" icon="ui-icon-star"/> </p:submenu>

tire a propriedade que eu citei, “outcome”, e faça isso pros dois exemplos, Plain menu e Overlay, ou teste um de cada vez. Em fim, tire para que possa funcionar, assim evitando a tentativa de acesso a algum diretório que não exista. Não se preocupe que irá funcionar normalmente o componente, sem essa propriedade. “outcome” serve para especificar uma página de saída, um resultado.
Faça isso !!!

Att,

Ericson de Castro

#5