Script to convert log4j.properties to log4j.xml

Question

I need to use custom filters, so I need to convert some long log4j.properties files to log4j.xml.

Is anyone aware of a tool to do this, or willing to contribute one

Answer 1

Here is something that may help you. Ceki Gülcü, the creator of log4j, started another logger project named logback, and he provides an online translator for log4j.properties files to xml config files for logback. It looks like the configuration file schemas of log4j.xml and logback.xml are pretty close.

At least it should produce something that can easily be converted to the log4j.xml format.

For your convenience: here's a sample log4j.properties file from the log4j documentation. Just paste it into the translator and check the output:

log4j.rootLogger=debug, stdout, R

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout

# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n

log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log

log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=1

log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n