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David,
On 10/8/18 14:27, David Filip wrote:
> Dear Tomcat Users,
>
> Apologies if this is more of a log4j question, but I thought that
> I'd start here, in case Tomcat has any easy remedies.
>
> I have a common webapp that I deploy to multiple, different
> contexts.
>
> In log4j.properties, I have a few different log files defined,
> e.g., for logins:
>
> log4j.appender.logins=org.apache.log4j.DailyRollingFileAppender
> log4j.appender.logins.file=${catalina.home}/logs/logins.log
> log4j.appender.logins.datePattern='.'yyyy-MM-dd
> log4j.appender.logins.append=true
> log4j.appender.logins.layout=org.apache.log4j.PatternLayout
> log4j.appender.logins.layout.ConversionPattern=[%d{MM/dd/yyyy
> HH:mm:ss}] [%p] [%C{1}]: %m%n
>
> log4j.logger.com.colornet.CAP.Actions.LoginAction=info, logins
> log4j.logger.com.colornet.CAP.Util.LoginTokenTag=info, logins
>
> However, as you may have guessed, if I have the same log4j
> configuration file for each context, the contexts tend to
> over-write each other.
>
> Is there any way to have the SAME log4j.properties deployed too
> multiple contexts play nicely and not overwrite each other, but
> merely append each other?
>
> Extra credit question (although sounds even more like a log4j
> question, so apologies): If not, is there any way to define the
> file path, e.g.:
>
> log4j.appender.logins.file=${catalina.home}/logs/logins.log
>
> to include the specific context? I have found a few references on
> the 'Net, e.g., ${contextPath}, ${servletName}, etc., which don't
> seem to work.
>
> My goal (desire?) is to have the same webapp and configuration and
> web.xml and log4j.properties, etc., deployed to every web context,
> but not have one context overwrite another content's entries.
>
> Of course, as the Mick once said, "You can't always have what you
> want".
>
> Please let me know if this is possible.
I'm not sure it's really a great idea to have all these separate
context logging to the same log file(s), but here is a way to do this:
1. Move (*move!*) your log4j.jar file from WEB-INF/lib to Tomcat's
lib/ directory
2. Move (*move!) your log4j.properties file from WEB-INF/classes to
Tomcat's lib/ directory. You may have to wrap it in a JAR file.
This ought to allow log4j to initialize a single time, and each
application will use that singly-initialized log4j instance.
- -chris
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