[logback-user] Redeploying application on Tomcat 5.5 gives NullPointerException

Thorbjørn Ravn Andersen thunderaxiom at gmail.com
Tue Jun 9 10:00:45 CEST 2009

Thorbjørn Ravn Andersen skrev  den 09-06-2009 09:45:
> I just redeployed a WAR file on a Windows based Tomcat 5.5. server, 
> after which reloading the login jsp-page resulted in the following 
> stack trace:
> java.lang.NullPointerException
>    ch.qos.logback.classic.spi.LoggingEvent.<init>(LoggingEvent.java:121)
I forgot to say where this was, it is the indicated line below.

   LogbackMDCAdapter logbackMDCAdapter = (LogbackMDCAdapter) MDC
 >>>>   mdcPropertyMap = logbackMDCAdapter.getPropertyMap();

Apparently the MDC adapter was set to null?

  Thorbjørn Ravn Andersen  "...plus... Tubular Bells!"

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