My guess: there are two log4j.jar, probably of different versions: one in the parent classlaoder and one in the child classloader. Therefore java regards these two as different classes. Heri
-----Ursprüngliche Nachricht----- Von: chrisgage [mailto:chrisg...@bellsouth.net] Gesendet: Mittwoch, 28. Oktober 2009 14:53 An: log4j-user@logging.apache.org Betreff: FileAppender is not assignable to Appender With an application we have been running in production, we recently added some jar files from another department's application in order to have the wto apps communicate. Since then we have been getting the following error in the log at application startup. It does not appear to cause log4j to stop working, it's just a worrying thing to see in the log. I am using log4j as a black box at the simplest possible level, so this message is completely incomprehensible to me, and it gives no stack trace or other indication where the problem is occurring. log4j:ERROR A "org.apache.log4j.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 [ com.ibm.ws.classloader.compoundclassloa...@d940d94 Local ClassPath: ... Delegation Mode: PARENT_FIRST] whereas object of type log4j:ERROR "org.apache.log4j.FileAppender" was loaded by [ com.ibm.ws.classloader.compoundclassloa...@8060806 Local ClassPath: ... Delegation Mode: PARENT_FIRST]. log4j:ERROR Could not instantiate appender named "SPRINGLOG". Actually this set of messages occurs twice, once for FileAppender and the repeated almost identically for ConsoleAppender. -- View this message in context: http://www.nabble.com/FileAppender-is-not-assignable-to-Appender-tp26095007p26095007.html Sent from the Log4j - Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-user-h...@logging.apache.org
