Quck and dirty, since my first Tapestry project was also the first time I worked with log4j:
This warning is gonna show up until you declare a log4j.properties file. Put it here: http://wiki.apache.org/tapestry/Tapestry5WhereToStoreConfigurationResources The file can be simple or even blank I think. You can just use this to stop it from complaining: log4j.rootCategory=debug, A1 # A1 is set to be a ConsoleAppender. log4j.appender.A1=org.apache.log4j.ConsoleAppender # A1 uses PatternLayout. log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=[%p] %c{1} %m%n #comment out like this #log4j.category.org.apache.tapestry=error #log4j.category.tapestry=error log4j.category.com.mycompany.myapp.somepackage=debug log4j.category.com.mycompany.myapp.somepackage.specificclass=info log4j.category.org.thirdparty.theirapp.somepackage=error Overall, using the logging ability here is a cheap way to improve your code! No more System.out.println() ! I think you can inject the logger, but I am doing it like this in my code: public class MyClass { private static Logger logger = Logger.getLogger(MyClass.class); public someMethod(){ logger.debug("Here's a debug statement (Most verbose level)"); logger.info("Here's some info (use for information) "); logger.error("Here's an error (only use for errors)"); } .... } On 10/5/07, jblier <[EMAIL PROTECTED]> wrote: > > Is log4j needed to build Tapestry projects? What does is stand for? > > With 5.0.6-SNAPSHOT I get this error when running the application: > > log4j:WARN No appenders could be found for logger > (org.mortbay.util.Container). > log4j:WARN Please initialize the log4j system properly. > > With 5.0.5 No errors are flagged. > -- > View this message in context: > http://www.nabble.com/T5%3A-Newbie-question---what-is-log4j--tf4577247.html#a13066138 > Sent from the Tapestry - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
