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https://issues.apache.org/jira/browse/LOG4J2-747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14094372#comment-14094372
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A B commented on LOG4J2-747:
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If I don't add the log4j-web jar file, then it does goes back to its default
configuration and prints ERROR and FATAL messages, but not other ones.
I checked for the classpath - this is a minimalist project with just the jars I
had shown you in the screen-shot, no other jars anywhere in the classpath.
I knew I didn't need the sources, Just have a habit of adding sources, if I
want to debug. I removed the web sources jar from the project and now it seems
to work.
So, it appears that when I add the sources for log4j-web, the web-fragment from
that source is probably scanned and considered a different web-fragment with
teh same name and that generates an error.
This maybe something you may want to look at - or outline a way where people
should add the sources if they want to debug...
I also tried by changing the name of the log4j config file - changing it from
log4j2.xml to log4j2_env.xml which exists and log4j2_env2.xml which doesn't
exist ( env is part of the name, not environment variable )
So, the observation is - if I define the log4jConfiguration and point it to an
existing config file, that is used. If log4jConfiguration is pointing to
non-existent file, the default is used.
Other observation is, using the sources jar along with the web jar ( or would
be the case for any jar containing the web-fragment, it would happen ) will
give duplicate web fragment error
I will now try using the actual environment variable sometime today and report
the outcome here.
Thanks for the suggestions and help you are providing
> Servlet Example of using different log4j2-{env:envValue}.xml
> ------------------------------------------------------------
>
> Key: LOG4J2-747
> URL: https://issues.apache.org/jira/browse/LOG4J2-747
> Project: Log4j 2
> Issue Type: Bug
> Components: Configurators
> Affects Versions: 2.0-beta9
> Environment: Websphere 8.5 Windows 7
> Reporter: A B
> Attachments: LOG4J2-747_Jira.war, LOG4J2747_Jira_Sample3.ear, log4j2
> location.jpg, log4j2-webapp-error.txt
>
>
> Based on my previous post / question on the log4j2 user list - Defining
> different log4j2.xml configurations based on environment -
> http://apache-logging.6191.n7.nabble.com/Defining-different-log4j2-xml-configurations-based-on-environment-tp40639p40662.html
> - I was attempting to create a Servlet Example of using different
> log4j2-\{env:envValue\}.xml.
> Based on the answers in this thread "Defining different log4j2.xml
> configurations based on environment", from log4j user list I tried to test
> using a different config for different environments. This is what I have done.
> * I defined a Windows env variable {{websphere_environment}} and set its
> value to "local"
> * I specify the config location as log4j2-\{env:envValue\}.xml. My web.xml
> context-param looks like below - servlet version is 3.0.
> {code}
> <context-param>
> <param-name>log4jConfigLocation</param-name>
> <param-value>/WEB-INF/config/log4j2-${env:websphere_environment}.xml
> </param-value>
> </context-param>
> {code}
> My relevant servlet method looks like below
> {code}
> protected void doGet(HttpServletRequest request, HttpServletResponse
> response) throws
> ServletException, IOException {
> Logger logger = Logger.getLogger(ServletLog4j2Test.class.getName());
> logger.fatal("Loaded:);
> // " + /WEB-INF/config/log4j2-${env:websphere_environment}.xml
> }
> {code}
> I do not have the lo4j2-local.xml defined in the WEB-INF/config ( it is
> defined as log4j-local.xml, not log4j2-local.xml and was expecting to get an
> error but it seems that the servlet is using a default configuration, because
> when I run the servlet, I get
> {code}
> "07/24/14 07:14:07:564:FATAL:WebContainer : 0: :
> :com.test.log4j2.ServletLog4j2Test: Loaded:"
> {code}
> How should my web-app and config files be set-up so that I can use different
> configs for different environments based on the environment?
>
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