Primefaces <p:fileUpload> component stops working - file-upload

Question

I've been working on this for a while and I managed to make this component work perfectly like this:
<h:form enctype="multipart/form-data">
<p:panelGrid columns="2">
<p:outputLabel value="Nombre:" for="nombre"/>
<p:inputText id="nombre" value="# {controladorProducto.producto.nombre}"/>
<p:outputLabel value="Descripción" for="descripcion"/>
<p:inputText id="descripcion" value="#{controladorProducto.producto.descripcion}"/>
<p:outputLabel value="Precio" for="precio"/>
<p:inputText id="precio" value="#{controladorProducto.producto.precio}"/>
<p:fileUpload id="fileuploader" value="#{controladorProducto.uploadedFile}"
mode="simple" />
<p:commandButton id="boton_cargar" value="Cargar" actionListener="#{controladorProducto.handleProductImageUpload}"
update="fotoProducto" ajax="true"/>
<p:outputLabel value="Imagen:" for="fotoProducto"/>
<p:graphicImage id="fotoProducto" value="#{controladorProducto.producto.imageToShow}"/>
<p:commandButton value="Insertar" action="#{controladorProducto.insertarProducto()}"/>
</p:panelGrid>
</h:form>
So as soon as I add any UI Component (you know, templates) it stops working. Here is the form with the template codes:
<ui:define name="top">
<h1>Buscador Clientes</h1>
<h:form id="form_growl">
<p:growl showDetail="false" />
</h:form>
</ui:define>
<ui:define name="left">
<h:form>
<p:menubar>
<p:menuitem value="Clientes" action="#{controladorCliente.buscarTodosClientes}" />
<p:separator/>
<p:menuitem value="Productos" action="#{controladorProducto.buscarTodosProductos}"/>
<p:separator/>
<p:menuitem value="Pedidos" url="#"/>
</p:menubar>
</h:form>
</ui:define>
<ui:define name ="content">
<h:form enctype="multipart/form-data">
<p:panelGrid columns="2">
<p:outputLabel value="Nombre:" for="nombre"/>
<p:inputText id="nombre" value="#{controladorProducto.producto.nombre}"/>
<p:outputLabel value="Descripción" for="descripcion"/>
<p:inputText id="descripcion" value="#{controladorProducto.producto.descripcion}"/>
<p:outputLabel value="Precio" for="precio"/>
<p:inputText id="precio" value="#{controladorProducto.producto.precio}"/>
<p:fileUpload id="fileuploader" value="#{controladorProducto.uploadedFile}"
mode="simple" />
<p:commandButton id="boton_cargar" value="Cargar" actionListener="#{controladorProducto.handleProductImageUpload}"
update="fotoProducto" ajax="true"/>
<p:outputLabel value="Imagen:" for="fotoProducto"/>
<p:graphicImage id="fotoProducto" value="#{controladorProducto.producto.imageToShow}"/>
<p:commandButton value="Insertar" action="#{controladorProducto.insertarProducto()}"/>
</p:panelGrid>
</h:form>
</ui:define>
</ui:composition>
Is there any problem, I've used the same template in other places of my project and it worked fine, its just here where it crashes. I get a NullPointerException and when i Debug it It didnt even call the bean.
At this point I´ve been looking around the Internet and I've not found anything.
Does anybody has any idea of why it doesnt works?
By the way, Im using NetBeans 7.3, GlassFish 3.1.2, Primefaces 3.5, JSF 2.1....
I hope someone answers me, I'd appreciate any help or clue on this.
This is the Error trace I get:
SEVERE: Se ha recibido 'java.lang.NullPointerException' al invocar la escucha de acción '#{controladorProducto.handleProductImageUpload}' para el componente 'boton_cargar'
SEVERE: java.lang.NullPointerException
at Controlador.ControladorProducto.handleProductImageUpload(ControladorProducto.java:59)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.el.parser.AstValue.invoke(AstValue.java:254)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:153)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
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$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
SEVERE: JSF1073: se ha interceptado javax.faces.event.AbortProcessingException durante el procesamiento de INVOKE_APPLICATION 5 : UIComponent-ClientId=j_idt22:boton_cargar, Mensaje=java.lang.NullPointerException
SEVERE: java.lang.NullPointerException
javax.faces.event.AbortProcessingException: java.lang.NullPointerException
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:182)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
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 com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NullPointerException
at Controlador.ControladorProducto.handleProductImageUpload(ControladorProducto.java:59)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.sun.el.parser.AstValue.invoke(AstValue.java:254)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:153)
... 38 more