[jboss-user] [Installation, Configuration & Deployment] - Re: Seperate log4j.xml for each application

[meissa]

the problem is not comming log4j. It's a jboss classloading problem.
In jboss4.3 sp1 version, you could have a log4j.jar version for each of you application.

But with jboss 4.2 version doing so, you may experience with exception below

  | log4j:ERROR A "org.jboss.logging.appender.FileAppender" object is not assignable to a "org.apache.log4j.Appender" variable.
  | log4j:ERROR The class "org.apache.log4j.Appender" was loaded by 
  | log4j:ERROR [WebappClassLoader
  |   delegate: false
  |   repositories:
  |     /WEB-INF/classes/
  | ----------> Parent Classloader:
  | java.net.FactoryURLClassLoader at 18c10af
  | ] whereas object of type 
  | log4j:ERROR "org.jboss.logging.appender.FileAppender" was loaded by [org.jboss.system.server.NoAnnotationURLClassLoader at 1a33d48].
  | log4j:ERROR Could not instantiate appender named "FILE".
  | 

It seem not possible to override jboss server librairies (log4j.jar is present in jboss server lib and has been customised).
Even if you try to isolate classloadiing, it's not working witk log4j.
Meissa

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