[jetty-user] Usage of JUL-to-SLF4J

Hi,

I would like to jetty log using SLF4J. It works for direct logging through
SLF4J and for logging using apache logging commons but it doesn't work for
java.util.logging. I am starting jetty from maven plugin and I use the
plugin version 6.1.26. I have jul-to-slf4j in dependencies in a version
1.6.6. The JUL logging properties contains only definition of
org.slf4j.bridge.SLF4JBridgeHandler to be a handler. 

My problem is, that the Jetty still says, that 

Can't load log handler "org.slf4j.bridge.SLF4JBridgeHandler"
java.lang.ClassNotFoundException: org.slf4j.bridge.SLF4JBridgeHandler
java.lang.ClassNotFoundException: org.slf4j.bridge.SLF4JBridgeHandler
	at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
	at java.util.logging.LogManager$7.run(LogManager.java:910)
	at java.security.AccessController.doPrivileged(Native Method)
	at
java.util.logging.LogManager.initializeGlobalHandlers(LogManager.java:903)
	at java.util.logging.LogManager.access$900(LogManager.java:129)
	at
java.util.logging.LogManager$RootLogger.getHandlers(LogManager.java:1010)
	at java.util.logging.Logger.log(Logger.java:454)
	at java.util.logging.Logger.doLog(Logger.java:480)
	at java.util.logging.Logger.logp(Logger.java:596)
	at org.zkoss.util.logging.Log.log(Log.java:379)
	at org.zkoss.util.logging.Log.debug(Log.java:711)
	at org.zkoss.zk.ui.http.WebManager.<init>(WebManager.java:108)
	at
org.zkoss.zk.ui.http.HttpSessionListener23.contextInitialized(HttpSessionListener23.java:140)
	at
org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:549)
	at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
	at
org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282)
	at
org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518)
	at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499)
	at
org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:115)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at
org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at
org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at
org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at
org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
	at org.mortbay.jetty.Server.doStart(Server.java:224)
	at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
	at
org.mortbay.jetty.plugin.Jetty6PluginServer.start(Jetty6PluginServer.java:132)
	at
org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:454)
	at
org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:396)
	at
org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210)
	at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184)
	at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
	at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
	at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
	at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
	at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
	at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
	at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
	at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
	at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
	at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
	at org.codehaus.classworlds.Launcher.main(Launcher.java:375)






and I don't know why, because all necessary slf4j modules are defined in
dependencies.

I would like ask for any help that bring me to working bridged logging from
JUL to SLF4J. It seems to be a classloader problem.

Thanks a lot,
Karel



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