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

[Ceki Gulcu]

Hello Thorbjørn,

It may be related to LBCLASSIC-104 which was fixed in logback 0.9.15. So I would 
suggest that you upgrade.

HTH,

Thorbjørn Ravn Andersen wrote:
> 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)
>    
> ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:437)
>    ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:393)
>    ch.qos.logback.classic.Logger.log(Logger.java:812)
>    
> org.apache.commons.logging.impl.SLF4JLocationAwareLog.debug(SLF4JLocationAwareLog.java:120) 
> 
>    
> org.apache.catalina.connector.Request.getRequestDispatcher(Request.java:1219) 
> 
>    
> org.apache.catalina.connector.RequestFacade.getRequestDispatcher(RequestFacade.java:569) 
> 
>    
> org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:402) 
> 
>    
> org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234) 
> 
>    
> org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
>    javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
>    
> org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144) 
> 
>    
> com.foo.axsWHSweb.servlet.filters.LoggedInToAxsFreightFilter.doFilter(LoggedInToAxsFreightFilter.java:59) 
> 
> 
> There is jcl-over-slf4j-1.5.5.jar, slf4j-api1.5.6, logback-classic 
> 0.9.14 and logback-core-0.9.14 in the classpath.  Is this a known and 
> fixed issue (so I should upgrade all to the newest) or should I 
> investigate?
> 
> I believe there has been added an appender in logback.xml with a layout 
> based on a class not present in the previous version of the war.
> 

-- 
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch