primeFaces : fileUpload to byte[]

I am trying to get the uploaded image of <p:fileUpload> as byte[] and persist it in DB by JPA. But I'm facing a problem and I'm not even sure if I'm coding it the right way.

This is the entity:

@Entity
class Object { 
  @Lob
  @Column(name = "image")
  private byte[] image;
  //... 
}

Managed bean:

@ManagedBean
class MyBean {

   private Object ob = new Object();

   @EJB 
   private ObjectFacadeLocal of;

   public void handleFileUpload(FileUploadEvent event) {
      byte[] content = event.getFile().getContents();
      ob.setImage(content);
   }

   public String submit() {
      //...
      of.create(ob);
      return "anotherpage"
   }

The ObjectFacade persists Object in database.

This is the JSF page called form.xhtml:

<h:form id = "upi" enctype = "multipart/form-data"> 
    <p:fileUpload fileUploadListener="#{MyBean.handleFileUpload}"   
          allowTypes="*.jpg;*.png;*.gif;" description="Images"/>  
    <h:commandButton value = "Submit" action = "#{MyBean.create()}">
    </h:commandButton>
</h:form>

First of all, I'm getting a warning in form.xhtml that it cannot find the handleFileUpload method, but I can still run it. When I press the submit button, then nothing happens, the page just refreshes. If I remove the enctype attribute then the object gets persisted, but not with the image.

Any ideas?

Update:

This is my web.xml file:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee /web-app_3_0.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/blog.xhtml</welcome-file>
    </welcome-file-list>
    <filter>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
    </filter-mapping>
</web-app>

You forgot to read the PrimeFaces User Guide. Here's an extract of <p:fileUpload> chapter:

Getting started with FileUpload

First thing to do is to configure the fileupload filter which parses the multipart request. FileUpload filter should map to Faces Servlet.
<filter>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>PrimeFaces FileUpload Filter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>

Without that filter, no one action method inside a <h:form enctype="multipart/form-data"> can be invoked nor will the submitted data be properly parsed.

As to the warning that the method cannot be found, this is related to the IDE which you're using which is pretending to be smarter than it is. Disable EL validation in that IDE to avoid those confusing warnings and look if you can't upgrade the IDE.