Log4j multiple pattern layout - log4j

Question

I'm pretty new with log4j. I want to display log messages with these infos: log timestamp, priority, fully qualified class name, the message, class name only.
I try to display twice the CATEGORY, once with a ConversionPattern, and once with an other ConversionPattern. Here is the piece of my log4j.properties:
log4j.appender.JDBC2.layoutPartsDelimiter=#-#
log4j.appender.B1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n #-#%-4r [%t] %-5p %c{1} %x %m%n
Sadly it does not work. How can I show full qualified class name and class name only in the same log message? TIA.
Francesco

Answer 1

log4j.appender.B1.layout.ConversionPattern is a key here and you can
associate it with only one value. So, if you write like this:
Log4j.appender.B1.layout.ConversionPattern=%some%value%here
Log4j.appender.B1.layout.ConversionPattern=%another%value%here
The later value would just override the previous one
You can define two different appenders and associate them with the
logger you want(the rootLogger as an example):
log4j.rootLogger=debug,console,console2
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.target=System.err
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern= %p %C (%F:%M(%L)) -
%m%n
log4j.appender.console2=org.apache.log4j.ConsoleAppender
log4j.appender.console2.target=System.err
log4j.appender.console2.layout=org.apache.log4j.PatternLayout
log4j.appender.console2.layout.ConversionPattern= %p %c{1}
(%F:%M(%L)) - %m%n
Note: the only difference between the two appenders are the
appenders' name and ConversionPattern property.
a more detailed discussion of log4j can be found Short introduction to log4j

Answer 2

It was my mistake. As you can see in my precedent post, Delimiter and PatternLayout refer to different appenders. I change
log4j.appender.JDBC2.layoutPartsDelimiter=#-#
log4j.appender.B1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n #-#%-4r [%t] %-5p %c{1} %x %m%n
into this:
log4j.appender.B1.layoutPartsDelimiter=#-#
log4j.appender.B1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n #-#%-4r [%t] %-5p %c{1} %x %m%n
and everything works fine, when I use #LAYOUT:1# I got the first ConversionPattern (left of delimiter #-#). When I use #LAYOUT:2# I got the second pattern. Thank you.
Francesco