I'm not sure I understand your question, but here is my full example - I'm not calling processEvent() directly, but I'm registering the listener in my xhtml page:
<ui:composition template="/template.xhtml"
xmlns:ui="
http://java.sun.com/jsf/facelets"
xmlns:h="
http://java.sun.com/jsf/html"
xmlns:f="
http://java.sun.com/jsf/core"
xmlns:ice="
http://www.icesoft.com/icefaces/component">
<ui:param name="pageTitle" value="Text Clustering Home Page"/>
<ui:define name="metadata">
<f:metadata>
<f:event type="preRenderView" listener="#{permissionBean.preRender}"/>
</f:metadata>
</ui:define>
<ui:define name="body">
Text Clustering Home Page
<h:form>
<h:panelGrid columns="1">
<ice:outputText rendered="#{loginService.loggedIn}" value="Logged in User: #{loginService.currentUser.username}"/>
<h:link rendered="#{!loginService.loggedIn}" value="Register" outcome="Register"/>
<h:commandLink value="Logout" rendered="#{loginService.loggedIn}" action="#{loginService.logout}"/>
<h:link value="Login" rendered="#{!loginService.loggedIn}" outcome="Login"/>
</h:panelGrid>
</h:form>
</ui:define>
</ui:composition>
Here is my bean that contains the listener method:
@Named
@RequestScoped
public class PermissionBean implements java.io.Serializable {
public void preRender(ComponentSystemEvent event) {
HttpServletRequest request = (HttpServletRequest)FacesContext.getCurrentInstance().getExternalContext().getRequest();
HttpServletResponse response = (HttpServletResponse)FacesContext.getCurrentInstance().getExternalContext().getResponse();
try {
if (!request.authenticate(response)) {
System.out.println("After authenticate, context = " +FacesContext.getCurrentInstance());
if (FacesContext.getCurrentInstance()!=null) {
FacesContext.getCurrentInstance().responseComplete();
}
}
} catch (Exception e) { // may throw ServletException or IOException
System.out.println("EXCEPTION calling authenticate");
e.printStackTrace();
}
}
}
On Aug 11, 2011, at 6:41 PM, Roger Kitain wrote:
> Where is your processEvent(SystemEvent event) method?
>
> On 8/11/11 5:48 PM, ekraffmiller_at_hmdc.harvard.edu wrote:
>> Hi,
>> I'm getting an error when I call authenticate() within a preRenderView
>> listener in a managed bean. It looks like a bug in Mojarra, but I just
>> wanted to ask here before creating an Issue in Jira.
>>
>> Here is my code:
>> public void preRender(ComponentSystemEvent event) {
>> HttpServletRequest request =
>> (HttpServletRequest)FacesContext.getCurrentInstance().getExternalContex
>> t().getRequest();
>> HttpServletResponse response =
>> (HttpServletResponse)FacesContext.getCurrentInstance().getExternalConte
>> xt().getResponse();
>> try {
>> if (!request.authenticate(response)) {
>> // can't call responseComplete() here, because
>> FacesContext.getCurrentInstance() == null.
>> // FacesContext.getCurrentInstance().responseComplete();
>>
>> }
>>
>> } catch (Exception e) { // may throw ServletException or
>> IOException
>> System.out.println("EXCEPTION calling authenticate");
>>
>> e.printStackTrace();
>> }
>>
>>
>> When the method is called I get this error:
>>
>> javax.enterprise.resource.webcontainer.jsf.context|_ThreadID=23;_Thread
>> Name=Thread-3;|Exception when handling error trying to reset the
>> response.
>> java.lang.NullPointerException
>> at
>> com.sun.faces.facelets.tag.jsf.core.DeclarativeSystemEventListener.proc
>> essEvent(EventHandler.java:126)
>>
>> I tried calling responseComplete() to fix the error, but after the call
>> to authenticate(), the FacesContext.getCurrentInstance() returns null
>>
>> Is this a bug in Mojarra, or am I calling authenticate incorrectly?
>>
>> Thanks,
>> Ellen
>
>
> --
> roger.kitain_at_oracle.com
> https://twitter.com/rogerk09
> http://www.java.net/blogs/rogerk
>