Hi,
I get a random error like 1 out of every 1000 calls to a jsf buttons
action. The jsf button code:
<h:commandButton id="certify_button" tabindex="3" disabled="true" action="#{
plateForm.delegate.certify}" value="#{messages['verify_button_certify']}"
styleClass="defaultButton certifyRejectButton" />
I have logged numerous debug statements trying to trace the following error,
yet I can not explain why it happens so randomly. Our user report that when
it first happens other users will get the error and then it will stop
occuring for hours:
11:17:07,094 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces
Servlet threw exception
javax.faces.el.EvaluationException: Expression: #{plateForm.delegate.certify
}
at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java
:164)
at org.apache.myfaces.application.ActionListenerImpl.processAction(
ActionListenerImpl.java:62)
at javax.faces.component.UICommand.broadcast(UICommand.java:106)
at javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:110)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:184)
at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(
LifecycleImpl.java:271)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java
:102)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
at com.transcore.lattice.measure.profiler.ProfilingFilter.doFilter(
ProfilingFilter.java:60)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
at com.transcore.lattice.measure.logger.LoggingFilter.doFilter(
LoggingFilter.java:57)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
at com.transcore.lattice.security.LoginFilter.doFilter(LoginFilter.java:97)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
at com.transcore.lattice.security.ExternalLoginFilter.doFilter(
ExternalLoginFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(
ReplyHeaderFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(
StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(
StandardContextValve.java:178)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(
CustomPrincipalValve.java:39)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(
SecurityAssociationValve.java:159)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(
JaccContextValve.java:59)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java
:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java
:105)
at org.apache.catalina.core.StandardEngineValve.invoke(
StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java
:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:856)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection
(Http11Protocol.java:744)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(
PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(
MasterSlaveWorkerThread.java:112)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
