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

9 Jun 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
        .getMDCAdapter();
...
...
...
...
mdcPropertyMap = logbackMDCAdapter.getPropertyMap();
Apparently the MDC adapter was set to null?

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