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From "Zsolt" <zkoppanyl...@intland.com>
Subject I get Exception if tomcat reloads a class
Date Wed, 23 Aug 2006 17:57:53 GMT
Hi,

I use tomcat-5.5.17 with log4j-1.2.13 and 1.5.0_08-b03.

How can I fix that?

Zsolt

log4j:ERROR Error occured while converting date.
java.lang.NullPointerException
	at
java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:488)
	at java.lang.StringBuffer.append(StringBuffer.java:302)
	at
org.apache.log4j.helpers.ISO8601DateFormat.format(ISO8601DateFormat.java:132
)
	at java.text.DateFormat.format(DateFormat.java:314)
	at
org.apache.log4j.helpers.PatternParser$DatePatternConverter.convert(PatternP
arser.java:444)
	at
org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:64)
	at org.apache.log4j.PatternLayout.format(PatternLayout.java:503)
	at
org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:301)
	at
org.apache.log4j.DailyRollingFileAppender.subAppend(DailyRollingFileAppender
.java:358)
	at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)
	at
org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
	at
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(Append
erAttachableImpl.java:65)
	at org.apache.log4j.Category.callAppenders(Category.java:203)
	at org.apache.log4j.Category.forcedLog(Category.java:388)
	at org.apache.log4j.Category.log(Category.java:853)
	at
org.apache.commons.logging.impl.Log4JLogger.error(Log4JLogger.java:193)
	at
org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:411)
	at
org.apache.catalina.session.StandardManager.load(StandardManager.java:320)
	at
org.apache.catalina.session.StandardManager.start(StandardManager.java:636)
	at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4137)
	at
org.apache.catalina.core.StandardContext.reload(StandardContext.java:2990)
	at
org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:
403)
	at
org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:
1277)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1569)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1578)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1578)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(Cont
ainerBase.java:1558)
	at java.lang.Thread.run(Thread.java:595)
log4j:ERROR Error occured while converting date.
java.lang.NullPointerException
	at
java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:488)
	at java.lang.StringBuffer.append(StringBuffer.java:302)
	at
org.apache.log4j.helpers.ISO8601DateFormat.format(ISO8601DateFormat.java:132
)
	at java.text.DateFormat.format(DateFormat.java:314)
	at
org.apache.log4j.helpers.PatternParser$DatePatternConverter.convert(PatternP
arser.java:444)
	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(Append
erAttachableImpl.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.error(Log4JLogger.java:193)
	at
org.apache.catalina.session.StandardManager.start(StandardManager.java:638)
	at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4137)
	at
org.apache.catalina.core.StandardContext.reload(StandardContext.java:2990)
	at
org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:
403)
	at
org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:
1277)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1569)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1578)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1578)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(Cont
ainerBase.java:1558)
	at java.lang.Thread.run(Thread.java:595)
23.08.2006 19:55:00 org.apache.commons.modeler.Registry registerComponent
SEVERE: Null component
Catalina:type=JspMonitor,name=jsp,WebModule=//localhost/cb,J2EEApplication=n
one,J2EEServer=none
23.08.2006 19:55:00 org.apache.catalina.core.ContainerBase backgroundProcess
WARNING: Exception processing loader WebappLoader[/cb] background process
java.lang.NullPointerException
	at org.apache.log4j.NDC.get(NDC.java:209)
	at org.apache.log4j.spi.LoggingEvent.getNDC(LoggingEvent.java:238)
	at
org.apache.log4j.helpers.PatternParser$BasicPatternConverter.convert(Pattern
Parser.java:401)
	at
org.apache.log4j.helpers.PatternConverter.format(PatternConverter.java:64)
	at org.apache.log4j.PatternLayout.format(PatternLayout.java:503)
	at
org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:301)
	at
org.apache.log4j.DailyRollingFileAppender.subAppend(DailyRollingFileAppender
.java:358)
	at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)
	at
org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
	at
org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(Append
erAttachableImpl.java:65)
	at org.apache.log4j.Category.callAppenders(Category.java:203)
	at org.apache.log4j.Category.forcedLog(Category.java:388)
	at org.apache.log4j.Category.log(Category.java:853)
	at
org.apache.commons.logging.impl.Log4JLogger.error(Log4JLogger.java:193)
	at
org.apache.catalina.session.StandardManager.start(StandardManager.java:638)
	at
org.apache.catalina.core.StandardContext.start(StandardContext.java:4137)
	at
org.apache.catalina.core.StandardContext.reload(StandardContext.java:2990)
	at
org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:
403)
	at
org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:
1277)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1569)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1578)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processC
hildren(ContainerBase.java:1578)
	at
org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(Cont
ainerBase.java:1558)
	at java.lang.Thread.run(Thread.java:595)


Zsolt Koppany
Phone: +49-711-722 1874
--
Intland Software, Wankelstrasse 3
D-70563 Stuttgart, Germany
Phone: +49-711-722 1873, e-mail:zsolt.koppany@intland.com
Fax: +49-711-722 1835
 



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