Question

I’m using log4j in an app I’m developing to eventually run inside Tomcat/JBoss, but right now I’m running it from inside Eclipse. I’ve configured it to write to a ConsoleAppender using a log4j.xml file and passed it as a system property, and all of my logging output works.

The problem is that log4j spits out a bunch of bootstrap/startup garbage that I really don’t need (or want) to see. For example:

log4j: Retreiving an instance of org.apache.log4j.Logger.
log4j: Setting [CoherenceMonitor] additivity to [false].
log4j: Level value for CoherenceMonitor is  [DEBUG].
log4j: Desired Level sub-class: [org.apache.log4j.Level]
log4j: CoherenceMonitor level set to DEBUG
log4j: Class name: [org.apache.log4j.ConsoleAppender]
log4j: Setting property [target] to [System.out].
log4j: Parsing layout of class: "org.apache.log4j.PatternLayout"
log4j: Setting property [conversionPattern] to [%-5p  %m%n].
log4j: Adding appender named [console] to category [CoherenceMonitor].

I get about 20 lines of this every time I run my program, and it’s just noise that obscures the log data I really care about. What I want to do is suppress this output (everything that starts with “log4j:“) and only include output from my own logging statements.

I’ve tried everything I could find via Google and my coworkers, including setting a priority value for the org.apache category as shown below. (Regardless of the priority I set, I still get the output.)

<category name="org.apache">
    <priority value="FATAL"/>
</category>

I’m pretty novice at log4j configuration, and mine is pretty simple. I have only one appender, one logger, and this one category. Any help on getting log4j to just keep its mouth shut while it’s doing setup would be much appreciated! 🙂

Answer 1

This looks like the debug from the logger itself. If you are using the XML config it looks like this:

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="true">

Turn the debug to false.