On Fri, 5 Dec 2003, Pedro Salgado wrote:
>
> Do you have the log4j jar on the WEB-INF/lib?
> Do you have the log4j.properties on the WEB-INF/classes?
>
> You have:
> String str = new String(LogonAction.class.getName());
> Logger logger = Logger.getLogger(str);
>
> Shouldn't it be:
> Logger logger = Logger.getLogger(LogonAction.class);
Not sure if this was mentioned, but you should configure your app to use
commons-logging and then specify in its configuration to use Log4j. That
way you can swap out logging implementations by simple configuration and
library addtions/removal (no recompile necessary).
What I do it this:
under /WEB-INF/classes
- commons-logging.properties
#
# Directly selects log4j logging implementation class.
org.apache.commons.logging.LogFactory=org.apache.commons.logging.impl.Log4jFactory
# Maps to a Log4J category (uses log4j.properties)
# note: org.apache.log4j.Category is deprecated in favor of
org.apache.log4j.Logger
# and requests for a Category object will return a Logger object.
org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JCategoryLog
- log4j.properties
# Set the root logger level to DEBUG and its only appender to rolling
log4j.rootLogger=WARN, rolling, stdout
# Set the logger level for everything under "org.apache" to WARN
log4j.logger.org.apache=WARN
log4j.logger.com.company.framework.common.util.ApplicationConfig=WARN
# Set the logger level for "org.apache.commons.validator.ValidatorUtil" to
# FATAL because we know that errors will be generated here that we want to
# ignore (due to the fact that it is unknown whether a consumer is
personal
# or business and the validation.xml file is not set up to accomodate the
# differences)
log4j.logger.org.apache.commons.validator.ValidatorUtil=FATAL
log4j.logger.org.apache.log4j.TextLogger=INFO
# Configure the stdout appender to be a ConsoleAppender
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
# Configure the stdout appender to use the PatternLayout
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# Configure the conversion pattern for the stdout appender
log4j.appender.stdout.layout.ConversionPattern=%d - %p %c - %m%n
# Configure the rolling appender to be a RollingFileAppender
log4j.appender.rolling=org.apache.log4j.RollingFileAppender
# Configure the name of the log file for the rolling appender
log4j.appender.rolling.File=/path/to/log/files/ldapAdminWeb.log
# Configure the maximum size of the log file for the rolling appender
#log4j.appender.rolling.MaxFileSize=4MB
# Keep one backup file of the rolling appender
#log4j.appender.rolling.MaxBackupIndex=5
# Configure the rolling appender to use the PatternLayout
log4j.appender.rolling.layout=org.apache.log4j.PatternLayout
# Configure the conversion pattern for the rolling appender
log4j.appender.rolling.layout.ConversionPattern=%d - %p %c - %m%n
then, in every classes that needs logging I do this:
public class SomeAction
extends MyBaseAction
private static Log log = LogFactory.getLog(SomeAction.class);
...
public ActionForward execute (..etc, etc...)
throws Exception{
...
...
log.debug("Delete Item:" + item.getId() +
"from Catalog:" + cat.getId());
...
...
}
Hope that helps you (or anyone following this thread)
>
>
> Pedro Salgado
>
> On 05/12/2003 06:56, "Rahul Mohan" <[EMAIL PROTECTED]> wrote:
>
> > hi nick,
> >
> > thanks for responding...its the logger class thats missing ithink...
> > this is the exception i get when i try to view the page:
> >
> > java.lang.NoClassDefFoundError: org/apache/log4j/Logger
> > at app.LogonAction.perform(Unknown Source)
> > ........
> >
> > what could be the problem? please excuse my novice level...
> >
> > thanks again..
> >
> >
> > ----- Original Message -----
> > From: "Nick Faiz" <[EMAIL PROTECTED]>
> > To: "'Struts Users Mailing List'" <[EMAIL PROTECTED]>
> > Sent: Friday, December 05, 2003 12:22 PM
> > Subject: RE: Log4j with Struts
> >
> >
> >> Well, what class can't it find, the Logger or the LogonAction.class ?
> >>
> >> I use it with Struts, without a hassle, on WebLogic 7.2.
> >>
> >> Nick
> >>
> >> -----Original Message-----
> >> From: Rahul Mohan [mailto:[EMAIL PROTECTED]
> >> Sent: Friday, 5 December 2003 5:46 PM
> >> To: struts
> >> Subject: Log4j with Struts
> >>
> >> Hi,
> >>
> >> has anybody tried using Log4j with struts? I tried the following code
> >> and its giving a ClassDefNotFoundException during runtime..
> >>
> >> this is inside the perform method:
> >> String str = new String(LogonAction.class.getName()); //LogonAction
> > is
> >> an Action Class
> >> logger = Logger.getLogger(str); //this line is throwing the
> > exception -
> >> apparently str is not having a classdef
> >>
> >> somebody please help me with this.....or is there any other method to
> >> perform logging?
> >>
> >> i am using tomcat4.1 ...
> >>
> >> Thanks in advance.
> >>
> >> Rahul Mohan
> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >> MasterCraft Group
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> >> Pune - 411 013
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> >
> >
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--
James Mitchell
Software Developer / Struts Evangelist
http://www.struts-atlanta.org
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