JSF/CDI Criar bean com escopo de aplicação durante inicialização do sistema / Eager Application Scope Bean

Fonte: http://stackoverflow.com/questions/315073/jsf-initialize-application-scope-bean-when-context-initialized

If your code calls FacesContext, it will not work outside a thread associated with a JSF request lifecycle. A FacesContext object is created for every request and disposed at the end of the request. The reason you can fetch it via a static call is because it is set to a ThreadLocal at the start of the request. The lifecycle of a FacesContext bears no relation to that of a ServletContext.

Maybe this isn't enough (it sounds like you've already been down this route), but you should be able to use a ServletContextListener to do what you want. Just make sure that any calls to the FacesContext are kept in the JSP's request thread.

web.xml:

<listener>
    <listener-class>appobj.MyApplicationContextListener</listener-class>
</listener>

Implementation:

public class MyApplicationContextListener implements ServletContextListener {

    private static final String FOO = "foo";

    public void contextInitialized(ServletContextEvent event) {
     MyObject myObject = new MyObject();
     event.getServletContext().setAttribute(FOO, myObject);
    }

    public void contextDestroyed(ServletContextEvent event) {
     MyObject myObject = (MyObject) event.getServletContext().getAttribute(
       FOO);
     try {
      event.getServletContext().removeAttribute(FOO);
     } finally {
      myObject.dispose();
     }
    }

}

You can address this object via the JSF application scope (or just directly if no other variable exists with the same name):

<f:view>
    <h:outputText value="#{applicationScope.foo.value}" />
    <h:outputText value="#{foo.value}" />
</f:view>

If you wish to retrieve the object in a JSF managed bean, you can get it from the ExternalContext:

FacesContext.getCurrentInstance()
            .getExternalContext().getApplicationMap().get("foo");