Caused by: java.lang.NullPointerException
at
org.apache.catalina.connector.Request.getAttribute(Request.java:877)
at
org.apache.catalina.connector.RequestFacade.getAttribute(RequestFacade.java:263)
That's really showing that it's gone beyond the Tapestry code and back into
the Tomcat (catalina) code. Are you doing something tricky with threads,
like trying to do part of the render is a background thread?
You'll probably need to single-step down ingo the catalina code to see
what's exactly going on. Not enough information here to diagnose.
On Mon, Jun 7, 2010 at 1:13 PM, Radek Terber <lst....@post.cz> wrote:
> Hi
>
> I have such problem: I have quite simple T5 application - (T5 + hibernate),
> currently compiled under T 5.1.0.5. When I run it under Jetty (ver. 8.0.0),
> it runs fine.
> But when I try it to start under Tomcat, I get NullPointerException that
> (probably) indicates the underline request is null.
> I tested it under Tomcat 6.0.18, 6.0.20 and 6.0.26. Tomcats was "pure"
> installations - with no aditional libraries.
> It runs under Java 6.18 on Win7, the same problem in on Linux and Java
> 6.16.
> I could post application's war somewhere, but it is quite big (cca 28M
> including libraries), ant it requires our application server running
> anywhere in LAN to run.
>
> Here it the eception:
> -------------------
> [ERROR] TapestryModule.RequestExceptionHandler Processing of request failed
> with uncaught exception: Render queue error in AfterRender[Index
> :layout.loginform]:
> org.apache.tapestry5.ioc.internal.util.TapestryException
> org.apache.tapestry5.internal.services.RenderQueueException: Render queue
> error in AfterRender[Index:layout.loginform]: org.apache.tapestry5
> .ioc.internal.util.TapestryException [at
> classpath:cz/gapo/weby/jmenovky/components/layout/Layout.tml, line 25]
> at
> org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:86)
> at
> org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:121)
> ... (I deleted it) ...
> at java.lang.Thread.run(Thread.java:619)
> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException [at
> classpath:cz/gapo/weby/jmenovky/components/layout/Layout.tml, line 25]
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.invoke(ComponentPageElementImpl.java:948)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.access$400(ComponentPageElementImpl.java:49)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.callback(ComponentPageElementImpl.java:159)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AfterRenderPhase.render(ComponentPageElementImpl.java:374)
> at
> org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:74)
> ... 68 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.catalina.connector.Request.getAttribute(Request.java:877)
> at
> org.apache.catalina.connector.RequestFacade.getAttribute(RequestFacade.java:263)
> at
> cz.gapo.webapps.common.t5.components.LoginForm.afterRender(LoginForm.java:127)
> at
> cz.gapo.webapps.common.t5.components.LoginForm.afterRender(LoginForm.java)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AfterRenderPhase.invokeComponent(ComponentPageElementImpl.java:369)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl$AbstractPhase.run(ComponentPageElementImpl.java:164)
> at
> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.invoke(ComponentPageElementImpl.java:933)
> ... 72 more
>
>
> The code fragment cause it:
> -------------------------------------------------------
> @Inject
> private RenderSupport rsup;
>
> @Inject
> private Request request;
>
> @AfterRender
> public void afterRender(MarkupWriter wr) {
> boolean requireLogin =
> request.getAttribute(Constants.REQUIRED_LOGIN_RQATR) != null; // here
> the NPE is thrown, but the "request" is not null
> if (requireLogin) {
> rsup.addScript("$j(function() {");
> rsup.addScript("$j(\"#loginFormDialog\").dialog(\"option\",
> \"modal\", false);");
> rsup.addScript("$j(\"#loginFormDialog\").dialog(\"open\");");
> rsup.addScript("});");
> }
> }
>
> -------------------------------------------------------
>
> Thanks for any ideas.
> Radek
>
>
>
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>
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Creator of Apache Tapestry
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