How to Configure the Logging Factory and the Logging Class

One of the questions that popped up on the Turbine mailing list is, why there is no commons-logging.properties file for Turbine.

At this point I started wondering, whether one could use this to actually configure logging for Turbine applications . I looked at the docs and found the docs on how to configure the LogFactory buried three deep in the API docs.

In Turbine 2.3 we have used

//
// Set up Commons Logging to use the Log4J Logging
//
System.getProperties().setProperty(LogFactory.class.getName(),
                                   Log4jFactory.class.getName());

to set up the LogFactory class which is not exactly the most elegant thing to do.

If you know, where to look, you will find a page in the docs which describes the configuration process in detail. Look here.

Please note, that you must still configure the underlying logging layer. So configuring commons-logging does not give you automatically a fully configured Log4J Logger.

For a small application without many logging needs, I'd recommend to use the commons-logging.properties method. Put a file called commons-logging.properties in your class path with the following contents:

org.apache.commons.logging.Log = org.apache.commons.logging.impl.SimpleLog

This will use the default Factory class implementation and use the integrated simple Logger to send logging output to stderr.

SimpleLog can even be configured by a properties file called simplelog.properties on your class path.

Also see Log4JLogger

How_to_Configure_the_Logging_Factory_and_the_Logging_Class (last edited 2009-09-20 23:48:32 by localhost)