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copied!<p>This seems to be a timing problem. This listener method is invoked during the <code>preRenderView</code> event. According to the source code of <code>ELFlash</code> (Mojarra's <a href="http://docs.oracle.com/javaee/6/api/javax/faces/context/Flash.html" rel="nofollow noreferrer"><code>Flash</code></a> implementation as returned by <code>ExternalContext#getFlash()</code>) it turns out that it won't set the flash cookie when you're currently sitting in the render response phase and the flash cookie hasn't been set yet for the current request:</p> <p>Here are the relevant lines from <code>ELFlash</code>:</p> <pre><code>if (currentPhase.getOrdinal() < PhaseId.RENDER_RESPONSE.getOrdinal()) { flashInfo = flashManager.getPreviousRequestFlashInfo(); } else { flashInfo = flashManager.getNextRequestFlashInfo(this, true); maybeWriteCookie(context, flashManager); } </code></pre> <p>The <code>maybeWriteCookie</code> would only set the cookie when the flash cookie needs to be passed through for the second time (i.e. when the redirected page in turn redirects to another page).</p> <p>This is an unfortunate corner case. This <code>ELFlash</code> logic makes sense, but this isn't what you actually want. <em>Basically</em> you need to add the message during <code>INVOKE_APPLICATION</code> phase instead. There is however no such event as <code>postInvokeAction</code>. With the new JSF 2.2 <code><f:viewAction></code> tag it should be possible as it really runs during invoke application phase.</p> <pre><code><f:viewAction action="#{bean.onload}" /> </code></pre> <p>As long as you're not on JSF 2.2 yet, you'd need to look for alternate ways. The easiest way would be to create a custom <a href="http://docs.oracle.com/javaee/6/api/javax/faces/event/ComponentSystemEvent.html" rel="nofollow noreferrer"><code>ComponentSystemEvent</code></a>.</p> <pre><code>@NamedEvent(shortName="postInvokeAction") public class PostInvokeActionEvent extends ComponentSystemEvent { public PostInvokeActionEvent(UIComponent component) { super(component); } } </code></pre> <p>Now you need somewhere a hook to publish this event. The most sensible place is a <a href="http://docs.oracle.com/javaee/6/api/javax/faces/event/PhaseListener.html" rel="nofollow noreferrer"><code>PhaseListener</code></a> listening on after phase of <code>INVOKE_APPLICATION</code>.</p> <pre><code>public class PostInvokeActionListener implements PhaseListener { @Override public PhaseId getPhaseId() { return PhaseId.INVOKE_APPLICATION; } @Override public void beforePhase(PhaseEvent event) { // NOOP. } @Override public void afterPhase(PhaseEvent event) { FacesContext context = FacesContext.getCurrentInstance(); context.getApplication().publishEvent(context, PostInvokeActionEvent.class, context.getViewRoot()); } } </code></pre> <p>If you register it as follows in <code>faces-config.xml</code></p> <pre><code><lifecycle> <phase-listener>com.example.PostInvokeActionListener</phase-listener> </lifecycle> </code></pre> <p>then you'll be able to use the new event as follows</p> <pre><code><f:event type="postInvokeAction" listener="#{bean.onload}" /> </code></pre> <hr> <p><strong>Update</strong> this is also available in the JSF utility library <a href="http://omnifaces.org" rel="nofollow noreferrer">OmniFaces</a>, so you don't need to homebrew the one and other. See also the <a href="http://showcase.omnifaces.org/eventlisteners/InvokeActionEventListener" rel="nofollow noreferrer"><code>InvokeActionEventListener</code> showcase example</a>.</p>

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