Unfortunately, it is still not logging my debug statements. I took your advice
and also read through some documents and created a log4j initialization servlet.
Here is the code and results:
#
# COmmon Logging servlet that starts once
#
public class CommonLogging extends HttpServlet {
public void init() {
String prefix = getServletContext().getRealPath("/");
String file = getInitParameter("log4j-init-file");
if(file != null) {
PropertyConfigurator.configure(prefix+file);
}
}
public void doGet(HttpServletRequest req, HttpServletResponse res) {}
public void doPost(HttpServletRequest req, HttpServletResponse res) {}
}
#
# In web.xml
#
<servlet>
<servlet-name>log4j-init</servlet-name>
<servlet-class>com.foo.CommonLogging</servlet-class>
<init-param>
<param-name>log4j-init-file</param-name>
<param-value>WEB-INF/classes/log4j.lcf</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
#
# log4j.lcf in WEB-INF/classes
#
log4j.rootCategory=DEBUG, A2
log4j.appender.A2=org.apache.log4j.DailyRollingFileAppender
log4j.appender.A2.file=logs/tomcat.log
log4j.appender.A2.datePattern='.'yyyy-MM-dd
log4j.appender.A2.append=true
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.layout.ConversionPattern=%-5p %d{ISO8601} [%t] - %m%n
#
# TestServlet
#
public class TestServlet extends HttpServlet {
private static Logger logger =
Logger.getLogger(GenerateChartServlet.class.getName());
public TestServlet() {
}
private void doPost(HttpServletRequest req, HttpServletResponse res)
throws IOException, ServletException
{
...
// This never gets outputted to log file
logger.debug("TestServlet: Debbuging");
...
}
}
#
# Output from tomcat.log
#
Dec 20, 2006 1:55:43 PM org.apache.catalina.core.AprLifecycleListener
lifecycleEvent
Dec 20, 2006 1:55:43 PM org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-80
Dec 20, 2006 1:55:43 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 751 ms
Dec 20, 2006 1:55:44 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Dec 20, 2006 1:55:44 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.20
Dec 20, 2006 1:55:44 PM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
log4j:WARN No appenders could be found for logger
(org.apache.commons.digester.Digester.sax).
log4j:WARN Please initialize the log4j system properly.
DEBUG JspRuntimeContext - Parent class loader is:
WebappClassLoader
delegate: false
repositories:
/WEB-INF/classes/
----------> Parent Classloader:
[EMAIL PROTECTED]
DEBUG JspServlet - Scratch dir for the JSP engine is:
DEBUG JspServlet - IMPORTANT: Do not modify the generated
servlets
Dec 20, 2006 1:55:45 PM org.apache.catalina.core.ApplicationContext log
INFO: org.apache.webapp.balancer.BalancerFilter: init(): ruleChain:
[org.apache.webapp.balancer.RuleChain:
[org.apache.webapp.balancer.rules.URLStringMatchRule: Target string: News /
Redirect URL: http://www.cnn.com],
[org.apache.webapp.balancer.rules.RequestParameterRule: Target param name:
paramName / Target param value: paramValue / Redirect URL:
http://www.yahoo.com], [org.apache.webapp.balancer.rules.AcceptEverythingRule:
Redirect URL: http://jakarta.apache.org]]
Dec 20, 2006 1:55:45 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Dec 20, 2006 1:55:45 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Dec 20, 2006 1:55:45 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextInitialized()
Dec 20, 2006 1:55:45 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextInitialized()
Dec 20, 2006 1:55:46 PM org.apache.coyote.http11.Http11BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-80
Dec 20, 2006 1:55:46 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Dec 20, 2006 1:55:46 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/27 config=null
Dec 20, 2006 1:55:46 PM org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
Dec 20, 2006 1:55:46 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 2322 ms
DEBUG ManagerBase - Start expire sessions StandardManager at
1166641005968 sessioncount 0
DEBUG ManagerBase - End expire sessions StandardManager
processingTime 0 expired sessions: 0
Any ideas? Thanks so much for your help!!
Quoting Jacob Kjome <[EMAIL PROTECTED]>:
>
> 1. Don't configure from the servlet. Either let Log4j autoconfigure
> itself by finding log4j.properties or log4j.xml in the classpath or
> configure from a class that's guaranteed to be called once (or has
> methods that are guaranteed to be called once) such as a servlet
> context listener.
>
> 2. Where do you expect Log4j to find log4j.properties? I bet you
> didn't expect that it would look in the directory from which the JVM
> started. The String version of the method takes a file path. If you
> give it a relative one, it will look relative to the directory from
> the JVM started. If you started Tomcat from it's script, it's
> looking in CATALINA_HOME/bin for the properties file. Avoid using a
> File. If you configure yourself, use a URL. You can load up a
> resource from the classloader as a URL and pass that to the
> configurator. I would avoid configuring yourself unless you have a
> really good reason to do it, though.
>
> 3. From the looks of it, you have Log4j in common/lib or shared/lib,
> right? You should avoid this too unless you know what you are
> doing. All your app that share this log4j.jar will log to the same
> logger repository. And each time you reconfigure an app, you
> reconfigure *all* apps. Do yourself a favor and put log4j.jar in
> WEB-INF/lib of each app you use and put the config file in
> WEB-INF/classes. Let Log4j autoconfigure itself and you will be golden.
>
>
> Jake
>
> At 09:33 PM 12/19/2006, you wrote:
> >I am trying to use log4j in my application under Tomcat 5.5. However, it is
> >producing mounds of debugging information but none of it lists the items I
> >specify. Here is a portion of my application, the config file, and
> a portion of
> >the output. Please note that logger.debug("TestServlet: Debugging) never
> gets
> >printed in the log file even though the function gets called!
> >
> >// TestServlet
> >public class TestServlet extends HttpServlet {
> > private static Logger logger =
> >Logger.getLogger(GenerateChartServlet.class.getName());
> >
> > public TestServlet() {
> > PropertyConfigurator.configure("log4j.properties");
> > }
> >
> > private void doPost(HttpServletRequest req, HttpServletResponse res)
> > throws IOException, ServletException
> > {
> > ...
> > // This never gets outputted to log file
> > logger.debug("TestServlet: Debbuging");
> > ...
> > }
> >}
> >
> >#
> ># Log4j configuration file.
> >#
> >log4j.rootCategory=DEBUG, A2
> >
> ># Available levels are DEBUG, INFO, WARN, ERROR, FATAL
> >#
> >#
> ># A2 is a DailyRollingFileAppender
> >#
> >
> >log4j.appender.A2=org.apache.log4j.DailyRollingFileAppender
> >log4j.appender.A2.file=logs/tomcat.log
> >log4j.appender.A2.datePattern='.'yyyy-MM-dd
> >log4j.appender.A2.append=true
> >log4j.appender.A2.layout=org.apache.log4j.PatternLayout
> >log4j.appender.A2.layout.ConversionPattern=%-5p %d{ISO8601} [%t] - %m%n
> >
> >#
> >#OUTPUT
> >#
> >DEBUG 2006-12-19 22:08:11,593 [main] - bodyText=''
> >DEBUG 2006-12-19 22:08:11,593 [main] - Fire body() for
> >ObjectCreateRule[className=org.apache.catalina.deploy.ContextResource,
> >attributeName=null]
> >DEBUG 2006-12-19 22:08:11,593 [main] - Fire body() for
> >SetNextRule[methodName=addResource,
> >paramType=org.apache.catalina.deploy.ContextResource]
> >DEBUG 2006-12-19 22:08:11,593 [main] - Popping body text ''
> >DEBUG 2006-12-19 22:08:11,593 [main] - Fire end() for
> >SetNextRule[methodName=addResource,
> >paramType=org.apache.catalina.deploy.ContextResource]
> >DEBUG 2006-12-19 22:08:11,593 [main] - Fire end() for
> >ObjectCreateRule[className=org.apache.catalina.deploy.ContextResource,
> >attributeName=null]
> >DEBUG 2006-12-19 22:08:11,593 [main] -
> [ObjectCreateRule]{web-app/resource-ref}
> >Pop org.apache.catalina.deploy.ContextResource
> >DEBUG 2006-12-19 22:08:11,593 [main] - ignorableWhitespace(
> >
> >)
> >DEBUG 2006-12-19 22:08:11,594 [main] - endElement(,,web-app)
> >DEBUG 2006-12-19 22:08:11,594 [main] - match='web-app'
> >DEBUG 2006-12-19 22:08:11,594 [main] - bodyText=''
> >DEBUG 2006-12-19 22:08:11,594 [main] - Fire body() for
> >[EMAIL PROTECTED]
> >DEBUG 2006-12-19 22:08:11,594 [main] - Popping body text ''
> >DEBUG 2006-12-19 22:08:11,594 [main] - Fire end() for
> >[EMAIL PROTECTED]
> >DEBUG 2006-12-19 22:08:11,594 [main] - endDocument()
> >DEBUG 2006-12-19 22:08:11,628 [main] - Opening /dev/urandom
> >DEBUG 2006-12-19 22:08:11,628 [main] - Registering
> >Catalina:type=Manager,path=/ftrade/graph,host=localhost
> >DEBUG 2006-12-19 22:08:11,628 [main] - Force random number initialization
> >starting
> >DEBUG 2006-12-19 22:08:11,628 [main] - Getting message digest component for
> >algorithm MD5
> >DEBUG 2006-12-19 22:08:11,628 [main] - Completed getting message digest
> >component
> >DEBUG 2006-12-19 22:08:11,628 [main] - getDigest() 0
> >DEBUG 2006-12-19 22:08:11,628 [main] - Force random number initialization
> >completed
> >DEBUG 2006-12-19 22:08:11,628 [main] - Start: Loading persisted sessions
> >DEBUG 2006-12-19 22:08:11,628 [main] - Loading persisted sessions from
> >SESSIONS.ser
> >DEBUG 2006-12-19 22:08:11,628 [main] - No persisted data file found
> >DEBUG 2006-12-19 22:08:11,628 [main] - Sending application start events
> >DEBUG 2006-12-19 22:08:11,628 [main] - Starting filters
> >DEBUG 2006-12-19 22:08:11,629 [main] - Parent class loader is:
> >WebappClassLoader
> >..
> >..
> >
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