Do you have multiple copies of log4j.jar in different classloaders? For
instance, let's say you run under Tomcat where webapps use child-first
classloading. You place log4j and slf4j in WEB-INF/lib and configure Log4j
for this classloader. But then you also have log4j/slf4j in a parent
classloader which didn't get configured and the code performing logging is
also part of the parent classloader, not the webapp classloader. In this
case, the "no appenders could be found" message makes sense.
I'm not saying the above is exactly your situation, but possibly some
derivation of it.
Jake
On Wed, 6 Jun 2012 18:26:51 -0400
Jeff Sawatzky <jeff.sawat...@locationary.com> wrote:
I have a project where I am using slf4j with the log4j binder, and I am
trying to configure log4j with the PropertyConfigurator. The project allows
for a common log4.properties file and a machine log4j.properties file, and at
start up I load the two files, combine them into a Properties object, and
then pass them to PropertyConfigurator.configure. But when I try to log using
slf4j I get a "log4j:WARN No appenders could be found for logger" error on
the class I am trying to log from.
In my app startup I have..
Properties props = //do work.......
LogManager.resetConfiguration();
PropertyConfigurator.configure(props);
but here is the output (with log4j.debug turned on)
log4j: Parsing for [root] with value=[INFO, stdout].
log4j: Level token is [INFO].
log4j: Category root set to INFO
log4j: Parsing appender named "stdout".
log4j: Parsing layout options for "stdout".
log4j: Setting property [conversionPattern] to [%-4r [%t] %-5p %c %x -
%m%n].
log4j: End of parsing for "stdout".
log4j: Parsed "stdout" options.
log4j: Finished configuring.
log4j: Parsing for [root] with value=[INFO].
log4j: Level token is [INFO].
log4j: Category root set to INFO
log4j: Finished configuring.
log4j:WARN No appenders could be found for logger
(com.loca.util.services.AppListener).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for
more info.
Shouldn't the logger for com.loca.util.services.AppListener use the root
appender that was configured?
Thanks!
---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org
For additional commands, e-mail: log4j-user-h...@logging.apache.org
