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From "Bruno Melloni" <Bruno.Mell...@akuratus.com>
Subject RE: log4j stops logging at console
Date Wed, 18 May 2005 15:26:42 GMT
This problem was fixed in (I believe) jBoss 4.0.2.   Of course in that
same versions they screwed up other stuff... (i.e.: Hibernate would no
longer work if you had it in your application) so you may or may not
want to use that version anyway.  But they are aware of the issues and I
hope they will eventually fix all these problems.

Good luck.

Bruno Melloni
Director of Software Architecture
Akuratus Corporation
1333 N. Stemmons Fwy, Suite 110
Dallas, Texas 75207
Phone: 469.227.0920
Fax: 469.227.0967

>>> womack@adobe.com 5/16/2005 11:38:55 AM >>>
JBoss, by current design, only provides for one logging context (ie
LoggerRepository).  On top of that, the JBoss log4j.xml also sets up a
special CONSOLE appender that maps the System.out and System.err

If you do any kind of configuration after JBoss starts up that affects
console appender OR affects loggers that have been defined in the
log4j.xml file, then it will affect the output to the log files. 
Console, do not mess with Console.  Also, if your log4j code ever
LoggerRepository.shutdown() during a redeploy, then logging will be
hosed as

JBoss really needs to provide a better mechanism to allowing web apps
ejb's to do their own logging.

Log4j does provide some "layering" of configuration where you can set
your own loggers and appenders as long as they are not references by
first/base configuration file.  Or you can just add your logging stuff
the JBoss log4j.xml file directly.

You may also find the following link useful, but I don't know if anyone
gotten to work correctly in JBoss or not.  Seems to me that to be
efficient, it would need to be supported pretty deep in the JBoss



> -----Original Message-----
> From: Clandes Tino [mailto:clandestino_bgd@yahoo.co.uk] 
> Sent: Monday, May 16, 2005 6:51 AM
> To: log4j-user@logging.apache.org 
> Subject: log4j stops logging at console
> Hello all.
> I am facing the problem with log4j usage in two
> separate applications.
> I am using CONSOLE appenders for both of them.
> Applications are started separately (in two shell
> windows). The first app (App1) is assembled as EAR and
> deployed under JBoss (it uses log4j.jar from
> JBoss/server/default/lib and initializes log4j through
> MBean, where appenders and loggers are configured).
> Here is the method in MBean that configures log4j in
> App1:
> -------------------------------------------------------
> private void initLog4j() throws ConfigurationException
> {
>     final Properties props = new Properties();
>     props.setProperty("log4j.category.com.myapp",
> er");
> nLayout")
> O8601}
>  %-5p [%c{1}] [%X{user}]  - %m%n");
> der");
> props.setProperty("log4j.appender.FILE.File",
> getConfigurationSetting(LOG_FILE));
> props.setProperty("log4j.appender.FILE.MaxFileSize",
> getConfigurationSetting(MAX_FILE_SIZE));
> props.setProperty("log4j.appender.FILE.MaxBackupIndex",
> getConfigurationSetting(MAX_BACKUP_FILE));
> yout");
> 01}
>  %-5p [%c{1}] [%X{user} %X{ip} %X{userAgent}] -
> %m%n");
>         PropertyConfigurator.configure(props);
>      }
> App1 uses A.jar and B.jar from App2 in compilation and
> runtime. Both jars are placed in sar archive and
> deployed in default/deploy folder under Jboss.
> The other (App2) is RMI Server application deployed
> separately (it uses another log4j-1.2.8.jar placed in
> its classpath). A.jar and B.jar are in its classpath.
> App2 configures log4j by log4j properties file:
> ------------------------------------------------
> log4j.category.CONSOLE = , aCONSOLE
> log4j.appender.aCONSOLE =
> org.apache.log4j.ConsoleAppender
> log4j.additivity.CONSOLE=false
> log4j.appender.aCONSOLE.ImmediateFlush=true
> log4j.appender.aCONSOLE.layout=org.apache.log4j.PatternLayout
> --------------------------------------------------
> Both applications are physically on the same machine.
> The problem occurs when some class from App1 invokes a
> class from B.jar. Then logging disappears from console
>  window of App1. No further message in log appears.
> However logging into file works OK.
> My question is:
> What can cause such behavior?
> Thanx for the hint in advance.
> Best regards
> Milan
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