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log4j questions
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log4j questions


  • Subject: log4j questions
  • From: William Hatch <email@hidden>
  • Date: Fri, 10 Sep 2004 13:41:47 -0400

Hi, I'm just converting my logging to log4j and have a few questions.  I've
created a log4j.properties file and added it to the appserver target.  I get
console output as expected, but any changes I make to the properties file
during run (in development mode) don't seem to change anything;  I'm
starting simple and tried changing the levels from "info" to "debug" etc,
but it stays at info no matter what, which leads me to believe that the
properties file isn't be read.  Here's what I have in the Application class:

Logger appLogger;
Appender appAppender;
SimpleLayout appLayout;

In main of the Application class, I have:

PropertyConfigurator.configure(argv[0]);  //not at all sure about this here

And then in the Application constructor I have:

//instantiate logger, appender, and layout
appLayout = new SimpleLayout();
appAppender = new ConsoleAppender(appLayout);
AppLogger = Logger.getLogger("appLogger");
appLogger.addAppender(appAppender);


In the log4j.properties file I have (probably wrongly)

log4j.rootAppender=WARN, appAppender

So now the questions:

(1)  I feel like my properties is probably wrong.  If it is, what is wrong?

(2)  Getting past number 1, how do you change these properties at runtime?
Using the "Additional Arguments" in Monitor, directly editing the
.properties file, or some CLI way?

Sorry for the basic questions and thanks for any suggestions.
--
William Hatch
Eng. Visual Media Collection
Cornell Lab of Ornithology
Macaulay Library
Voice (607) 254-2116
Fax (607) 254-2439
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