log4j:WARN No appenders could be found for logger (running jar file, not web app) [duplicate]

Question

First up - yes, I have read the multiple questions & answers on this topic, and can't get any of the solutions within those to help me. I'm not running Tomcat or JBoss and I don't have a web.xml file to change. I'm using Java 6.0 and log4j-1.2.8.jar.

I am creating a runnable jar file with IDEA IntelliJ with jar libraries packaged separately and linked via the manifest. I am running my code on a Linux server thus:

me@server:/mydir> java -jar code/myjar.jar log4j:WARN No appenders could be found for logger (FactoredEventsForTrna). log4j:WARN Please initialize the log4j system properly. 

My log4j configuration file (which I've placed both in mydir and mydir/code, just in case) is:

## Logger configure file for myproject log.dir=log/ datestamp=yyyy-MM-dd/HH:mm:ss.SSS log4j.rootLogger=TRACE, file, proappender, console  log4j.appender.file=org.apache.log4j.RollingFileAppender log4j.appender.file.maxFileSize=1GB log4j.appender.file.maxBackupIndex=5 log4j.appender.file.File=log/mydebug.log log4j.appender.file.threshold=TRACE log4j.appender.file.layout=org.apache.log4j.PatternLayout log4j.appender.file.layout.ConversionPattern=%d{${datestamp}} %5p: %c{2} - %m%n  log4j.appender.proappender=org.apache.log4j.RollingFileAppender log4j.appender.proappender.maxFileSize=5GB log4j.appender.proappender.Threshold=INFO log4j.appender.proappender.File=log/myinfo.log log4j.appender.proappender.layout=org.apache.log4j.PatternLayout log4j.appender.proappender.layout.ConversionPattern=%d{${datestamp}} %5p: %c{2} - %m%n  log4j.appender.console=org.apache.log4j.ConsoleAppender log4j.appender.console.Threshold=DEBUG log4j.appender.console.layout=org.apache.log4j.PatternLayout log4j.appender.console.layout.ConversionPattern=%d{${datestamp}} %5p: %c{2} - %m%n 

And I have created the log/ directory in mydir and mydir/code, again, just in case.

Any ideas?

Answer 1

There are many possible options for specifying your log4j configuration. One is for the file to be named exactly "log4j.properties" and be in your classpath. Another is to name it however you want and add a System property to the command line when you start Java, like this:

-Dlog4j.configuration=file:///path/to/your/log4j.properties 

All of them are outlined here http://logging.apache.org/log4j/1.2/manual.html#defaultInit