Log4j automatic compression with FixedWindowRollingPolicy

[Jan Hoppmann]

Hey!

I tried to have my log files automatically compressed while using FixedWindowRollingPolicy and SizeBasedTriggeringPolicy, but all I get are .zip-files that are just plain text with a zip extension.

My log4j.xml logs like this:

<appender name="rolling" class="org.apache.log4j.rolling.RollingFileAppender">
	<rollingPolicy class="org.apache.log4j.rolling.FixedWindowRollingPolicy">
     		<param name="FileNamePattern" value="logfile.%i.log.zip"/>
     		<param name="MinIndex" value="1" />
     		<param name="MaxIndex" value="10" />
     	</rollingPolicy>
	<triggeringPolicy class="org.apache.log4j.rolling.SizeBasedTriggeringPolicy">
		<param name="MaxFileSize" value="15000000" />
	</triggeringPolicy>
     	
	<layout class="org.apache.log4j.PatternLayout">
		<param name="ConversionPattern" value="%d %X{username} %X{threadId} %-5p %-17c - %m%n" />
	</layout>
	
</appender>

Is there any way to do this using build in classes or do I have to write my own appender?