Hello,
usually in flat plain text log4j.config files global system properties can
be defined, which may be referenced in the configuration of different
appenders, e. g.
log4j.logdir=C:/Data/logfiles
...
log4j.appender.MyAppender1.File=${log4j.logdir}/MyAppender1.log
...
log4j.appender.MyAppender2.File=${log4j.logdir}/MyAppender2.log
I found this is a very convenient way to define (and to administer) such
parameters only once globally for the entire log configuration and to use it
on several references as here in the appenders configuration.
How can such global system properties be defined in xml-based configuration
files (log4j.xml)?
Where is it documented? I'd found no hint about it.
Thomas Wiedmann
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