Okay, I was able to get a thread dump for when this mysterious exception
happens, see my prior message for the code the code that I am using to print
this out:
2009-07-01 16:42:59,155 ERROR Web [RequestCycle] :
java.lang.NullPointerException
2009-07-01 16:42:59,250 ERROR Web [MMRequestCycle] : The exception had a
length of 0, dumping Stack
2009-07-01 16:42:59,263 ERROR Web [STDERR] : java.lang.Exception: Stack
trace
2009-07-01 16:42:59,273 ERROR Web [STDERR] : at
java.lang.Thread.dumpStack(Thread.java:1206)
2009-07-01 16:42:59,280 ERROR Web [STDERR] : at
com.mdate.web.customcomponents.MMRequestCycle.logRuntimeException(MMRequestCycle.java:95)
2009-07-01 16:42:59,288 ERROR Web [STDERR] : at
org.apache.wicket.RequestCycle.step(RequestCycle.java:1339)
2009-07-01 16:42:59,297 ERROR Web [STDERR] : at
org.apache.wicket.RequestCycle.steps(RequestCycle.java:1399)
2009-07-01 16:42:59,307 ERROR Web [STDERR] : at
org.apache.wicket.RequestCycle.request(RequestCycle.java:529)
2009-07-01 16:42:59,317 ERROR Web [STDERR] : at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
2009-07-01 16:42:59,339 ERROR Web [STDERR] : at
org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:201)
2009-07-01 16:42:59,356 ERROR Web [STDERR] : at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
2009-07-01 16:42:59,363 ERROR Web [STDERR] : at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
2009-07-01 16:42:59,372 ERROR Web [STDERR] : at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
2009-07-01 16:42:59,380 ERROR Web [STDERR] : at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
2009-07-01 16:42:59,389 ERROR Web [STDERR] : at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
2009-07-01 16:42:59,398 ERROR Web [STDERR] : at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
2009-07-01 16:42:59,407 ERROR Web [STDERR] : at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
2009-07-01 16:42:59,414 ERROR Web [STDERR] : at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
2009-07-01 16:42:59,423 ERROR Web [STDERR] : at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
2009-07-01 16:42:59,429 ERROR Web [STDERR] : at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
2009-07-01 16:42:59,435 ERROR Web [STDERR] : at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
2009-07-01 16:42:59,442 ERROR Web [STDERR] : at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
2009-07-01 16:42:59,451 ERROR Web [STDERR] : at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
2009-07-01 16:42:59,464 ERROR Web [STDERR] : at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
2009-07-01 16:42:59,484 ERROR Web [STDERR] : at
org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)
2009-07-01 16:42:59,492 ERROR Web [STDERR] : at
org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:366)
2009-07-01 16:42:59,500 ERROR Web [STDERR] : at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
2009-07-01 16:42:59,507 ERROR Web [STDERR] : at
java.lang.Thread.run(Thread.java:619)
On Wed, Jul 1, 2009 at 12:41 PM, Jeremy Levy <jel...@gmail.com> wrote:
> I'm trying this, what do you think?
> if (e == null) {
> log.error("The exception was null, dumping Stack");
> Thread.dumpStack();
> }
>
> StackTraceElement[] out = e.getStackTrace();
> StringBuffer sb = new StringBuffer();
>
> for (StackTraceElement ex : out) {
> sb.append(ex.toString() + "\n");
> }
>
> if (out.length == 0) {
> log.error("The exception had a length of 0, dumping
> Stack");
> Thread.dumpStack();
> }
>
>
> What I have seen so far is that e.getStackTrace() has a length of 0, so I
> added the thread dump...
>
> Jeremy
>
> On Mon, Jun 29, 2009 at 4:26 PM, Igor Vaynberg <igor.vaynb...@gmail.com>wrote:
>
>> even if the exception was not being chained it should have still had
>> some sort of a stacktrace.
>>
>> -igor
>>
>> On Mon, Jun 29, 2009 at 11:39 AM, Martijn
>> Reuvers<martijn.reuv...@gmail.com> wrote:
>> > Likely the message or stacktrace(s) (the actual cause) is throwing the
>> > nullpointer, in which case that is all you can see when logging. You
>> > might wanna try: log.error("whatever here",e.getCause()), generally
>> > the latter is what you're interested in anyway. You might also try:
>> >
>> >
>> > @Override
>> > protected void logRuntimeException(RuntimeException e) {
>> > //super.logRuntimeException(e); // Turn this one off as
>> > somewhere the error seems to occur
>> > log.error("whatever, but NOT the message",e);
>> > }
>> >
>> > Finally, I'd personally attempt to write it all to a custom file to
>> > see if you can get anything useful into it.
>> >
>> > On Mon, Jun 29, 2009 at 6:49 PM, Igor Vaynberg<igor.vaynb...@gmail.com>
>> wrote:
>> >> log.runtimeexception is already doing log.error(e.getMessage(), e);
>> >> and he is still not seeing the stacktrace...
>> >>
>> >> -igor
>> >>
>> >> On Mon, Jun 29, 2009 at 9:41 AM, mbrictson<m...@55minutes.com> wrote:
>> >>>
>> >>> If you simply call log.error(e), your log will only contain
>> e.toString(),
>> >>> which does not include the stack trace. You need to use the 2-arg
>> version of
>> >>> log.error() if you want the full trace.
>> >>>
>> >>> Try this:
>> >>>
>> >>> log.error("An uncaught runtime exception occurred", e);
>> >>>
>> >>>
>> >>> jelevy wrote:
>> >>>>
>> >>>> Igor,
>> >>>> Can you give me some direction on how to go about getting the "e".
>> >>>>
>> >>>> In my own RequestCycle I've done the following:
>> >>>>
>> >>>> @Override
>> >>>> protected void logRuntimeException(RuntimeException e) {
>> >>>> super.logRuntimeException(e);
>> >>>> log.error(e);
>> >>>> }
>> >>>>
>> >>>>
>> >>> --
>> >>> View this message in context:
>> http://www.nabble.com/Mysterious-NullPointerException-tp24094116p24257631.html
>> >>> Sent from the Wicket - User mailing list archive at Nabble.com.
>> >>>
>> >>>
>> >>> ---------------------------------------------------------------------
>> >>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>> >>> For additional commands, e-mail: users-h...@wicket.apache.org
>> >>>
>> >>>
>> >>
>> >> ---------------------------------------------------------------------
>> >> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>> >> For additional commands, e-mail: users-h...@wicket.apache.org
>> >>
>> >>
>> >
>> > ---------------------------------------------------------------------
>> > To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>> > For additional commands, e-mail: users-h...@wicket.apache.org
>> >
>> >
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
>> For additional commands, e-mail: users-h...@wicket.apache.org
>>
>>
>
>
> --
> Jeremy Levy
>
> See my location in real-time:
> http://seemywhere.com/jeremy
>
--
Jeremy Levy
See my location in real-time:
http://seemywhere.com/jeremy
