Hi to all,
in order to have all debug-relevant settings in one place (web.xml) I tried to
set <debug-output> via EL.
Unfortunately this doesn't work.
I always get a NPE on the 1 request (login page) to my webapp.
Should this scenario be possible? Or, am I doing something wrong?
Thanks for your help.
Harald
web.xml:
<context-param>
<param-name>TRINIDAD_DEBUG_OUTPUT</param-name>
<param-value>true</param-value>
</context-param>
trinidad-config.xml:
<debug-output>#{initParam.TRINIDAD_DEBUG_OUTPUT}</debug-output>
Stack-Trace:
2008-01-28 11:43:16,687 ERROR
org.apache.catalina.core.ContainerBase.[Catalina].[xp-lmazf9p.lasg].[/aim].[faces]:
Servlet.service() for servlet faces threw exception
java.lang.NullPointerException
at
org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(FacesBeanImpl.java:68)
at
org.apache.myfaces.trinidadinternal.config.ConfigParser.parseConfigFile(ConfigParser.java:138)
at
org.apache.myfaces.trinidadinternal.context.RequestContextFactoryImpl._getBean(RequestContextFactoryImpl.java:71)
at
org.apache.myfaces.trinidadinternal.context.RequestContextFactoryImpl.createContext(RequestContextFactoryImpl.java:56)
at
org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl._attachRequestContext(GlobalConfiguratorImpl.java:422)
at
org.apache.myfaces.trinidadinternal.config.GlobalConfiguratorImpl.beginRequest(GlobalConfiguratorImpl.java:202)
at
org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:126)
at
org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.airplus.aim.webapp.filter.AIMFilter.doFilter(AIMFilter.java:135)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:209)
at
org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:347)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
2008-01-28 11:43:17,187 INFO
org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl: Apache
Trinidad is running with time-stamp checking enabled. This should not be used
in a production environment. See the
org.apache.myfaces.trinidad.CHECK_FILE_MODIFICATION property in WEB-INF/web.xml
2008-01-28 11:43:17,609 ERROR javax.faces.webapp._ErrorPageWriter: An
exception occurred
java.lang.NullPointerException
at
org.apache.myfaces.trinidadinternal.renderkit.core.CoreRenderingContext.<init>(CoreRenderingContext.java:77)
at
org.apache.myfaces.trinidadinternal.renderkit.core.CoreRenderKit.encodeBegin(CoreRenderKit.java:479)
at
org.apache.myfaces.trinidadinternal.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:166)
at
org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:654)
at
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:447)
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
at
org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:424)
at
org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:271)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at
org.apache.catalina.ha.session.JvmRouteBinderValve.invoke(JvmRouteBinderValve.java:209)
at
org.apache.catalina.ha.tcp.ReplicationValve.invoke(ReplicationValve.java:347)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)
Additional debugging reveilled that FacesContext is null while evaluating the
EL-expression.
The NPE occurs at
org.apache.myfaces.trinidad.bean.FacesBeanImpl.getProperty(PropertyKey key)
final public Object getProperty(PropertyKey key)
{
Object o = getLocalProperty(key);
if (o != null)
return o;
// Look for a binding if and only if the key supports bindings
if (key.getSupportsBinding())
{
ValueExpression expression = getValueExpression(key);
if (expression != null)
{
FacesContext context = FacesContext.getCurrentInstance(); // context is
null here !!!
return expression.getValue(context.getELContext());
}
}
return null;
}
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