Question

Here is the error message –

log4j:WARN No appenders could be found for logger (SerialPortUtil).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

Here is the invocation in the SerialPortUtil class –

private static final Logger log = Logger.getLogger(SerialPortUtil.class.getSimpleName());
.
.
.
log.info("Serial port " + port.getName() + " is available");

Here is the content of my log4j.properties file –

log4j.rootLogger=DebugAppender

#Debug logging
log4j.appender.DebugAppender=org.apache.log4j.RollingFileAppender
log4j.appender.DebugAppender.Threshold=DEBUG
log4j.appender.DebugAppender.File=activityLog.log
log4j.appender.DebugAppender.MaxFileSize=200KB
log4j.appender.DebugAppender.MaxBackupIndex=5
log4j.appender.DebugAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.DebugAppender.layout.ConversionPattern=%d{DATE} %t - %m%n

And the property file is on the classpath.

Everything looks right to me, so what’s going on? Shouldn’t the DEBUG threshold also capture INFO logging?

Answer 1

Alright, so I got it working by changing this

log4j.rootLogger=DebugAppender

to this

log4j.rootLogger=DEBUG, DebugAppender

Apparently you have to specify the logging level to the rootLogger first? I apologize if I wasted anyone’s time.

Also, I decided to answer my own question because this wasn’t a classpath issue.