Hi,
I am using log4j 1.2.13 in a web app deployed on SJAS 9. The logging
is initialised in a ServletContextListener subclass in the
contextInitialised method.
String configFile = context.getInitParameter("log4j.config_file");
try {
DOMConfigurator.configureAndWatch(configFile, 30000L);
}
catch (Exception ex) {
throw new RuntimeException("unable to initialise log4j", ex);
}
This all works fine until I actually change the log4j config file, and
then I see
[#|2006-11-07T12:28:24.284-0800|WARNING|sun-appserver-pe9.0|javax.enterprise.system.stream.err|_ThreadID=49;_ThreadName=Thread-54;_RequestID=8b96aeb3-efe4-4c1b-8b6c-4222c1d99332;|
java.lang.NullPointerException
at org.apache.log4j.LogManager.getLoggerRepository(LogManager.java:168)
at org.apache.log4j.xml.XMLWatchdog.doOnChange(DOMConfigurator.java:861)
at
org.apache.log4j.helpers.FileWatchdog.checkAndConfigure(FileWatchdog.java:88)
at org.apache.log4j.helpers.FileWatchdog.run(FileWatchdog.java:107)
|#]
in the server log, one of these for each appender in the log file.
Logging is subsequently broken and any further attempts yield errors
stating that I am trying to write to a closed appender and I have to
redeploy the web app for it to work again.
How do I fix this?
Thanks
Chris
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