NullPointerException In Tomcat Log

[Ashik Uzzaman]

I have created a few WAR files and tried deploying in Tomcat. After deployment I can use the applications fine. But when I check the Tomcat log file, I find a NullPointerException stack trace for each of the applications. I would like to know whether there is any known issue about it. The Log4J I am using is log4j-1.2.12.jar and dont know if it has something to do with that. I would appreciate any response from you.

Jan 10, 2007 11:04:07 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deploying web application archive admin_ui.war
Jan 10, 2007 11:04:07 AM org.apache.catalina.core.StandardContext processTlds
SEVERE: Error reading tld listeners java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.log4j.spi.LocationInfo.<init>(LocationInfo.java:104)
at org.apache.log4j.spi.LoggingEvent.getLocationInformation(LoggingEvent.java:191)
at org.apache.log4j.helpers.PatternParser$LocationPatternConverter.convert(PatternParser.java:483)
at org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:64)
at org.apache.log4j.PatternLayout.format(PatternLayout.java:503)
at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:301)
at org.apache.log4j.DailyRollingFileAppender.subAppend(DailyRollingFileAppender.java:358)
at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65)
at org.apache.log4j.Category.callAppenders(Category.java:203)
at org.apache.log4j.Category.forcedLog(Category.java:388)
at org.apache.log4j.Category.log(Category.java:853)
at org.apache.commons.logging.impl.Log4JLogger.debug(Log4JLogger.java:171)
at org.apache.catalina.startup.TldConfig.tldScanResourcePaths(TldConfig.java:575)
at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:282)
at org.apache.catalina.core.StandardContext.processTlds(StandardContext.java:4278)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4115)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:809)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:698)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1122)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1021)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)