[logback-dev] [JIRA] Commented: (LBCLASSIC-74) NullPointerException in Logger after container restart

Manel Clos (JIRA) noreply-jira at qos.ch
Fri Oct 3 13:42:50 CEST 2008

    [ http://jira.qos.ch/browse/LBCLASSIC-74?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=10737#action_10737 ] 

Manel Clos commented on LBCLASSIC-74:


Though I switched from Log4j, in the code I'm really using commons-logging objects.

I modified the example to use commons-logging and it works with no problem.

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

//import org.slf4j.Logger;
//import org.slf4j.LoggerFactory;


//	private final Logger logger = LoggerFactory.getLogger(LogbackTest.class);
	private final Log logger = LogFactory.getLog(LogbackTest.class);

> NullPointerException in Logger after container restart
> ------------------------------------------------------
>                 Key: LBCLASSIC-74
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-74
>             Project: logback-classic
>          Issue Type: Bug
>    Affects Versions: 0.9.9
>         Environment: Eclipse 3.4, Java 5, Tomcat 5.5.26, plain JSP (no servlet)
>            Reporter: Manel Clos
>            Assignee: Logback dev list
>         Attachments: minimalwebapp.zip
> Hi,
> loggerContext in the Logger class is null after container restart. This will produce a NPE when trying to further use logback.
> java.lang.NullPointerException
> 	at ch.qos.logback.classic.Logger.callTurboFilters(Logger.java:775)
> 	at ch.qos.logback.classic.Logger.isDebugEnabled(Logger.java:630)
> 	at ch.qos.logback.classic.Logger.isDebugEnabled(Logger.java:613)
> 	at test.LogbackTest.testLogger(LogbackTest.java:15)

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