[logback-user] breaking on startup

[Ceki Gulcu]

Could you post the whole stack trace please (including nested exceptions)? I 
thought that a few lines would be sufficient but that is not the case.

What does "mvn dependency:tree" give you?

Brian Moschel wrote:
> Here's more of the error:
> 
> java.lang.ClassCastException: org.slf4j.impl.SimpleLoggerFactory
>         at jupiter.messaging.EventSubscriber.<init>(EventSubscriber.java:40)
>         at developerworks.jetty6.CrudMessage.<clinit>(CrudMessage.java:91)
>         at 
> developerworks.jetty6.UserCountServlet.<clinit>(UserCountServlet.java
> :33)
>         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native 
> Method)
> 
>         at 
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct
> orAccessorImpl.java:39)
>         at 
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC
> onstructorAccessorImpl.java:27)
> 
> This is code that run at startup and breaks on (LoggerContext) 
> LoggerFactory.getILoggerFactory();
> 
> I am using Maven to keep track of dependencies, I have the following 
> included for logback:
>    
>       <dependency>
>         <groupId>ch.qos.logback</groupId>
>         <artifactId>logback-core</artifactId>
>         <version>0.9.15</version>
>       </dependency>
>      
>       <dependency>
>         <groupId>ch.qos.logback</groupId>
>         <artifactId>logback-classic</artifactId>
>         <version>0.9.15</version>
>       </dependency>
>      
>       <dependency>
>         <groupId>ch.qos.logback</groupId>
>         <artifactId>logback-access</artifactId>
>         <version>0.9.15</version>
>       </dependency>
>      
>       <dependency>
>         <groupId>org.slf4j</groupId>
>         <artifactId>slf4j-api</artifactId>
>         <version>1.5.6</version>
>       </dependency>
> 
> On Wed, May 13, 2009 at 6:43 AM, Ceki Gulcu <ceki at qos.ch> wrote:
> 
>     Hello Brian,
> 
>     Could you please post the two or three lines of the stack trace?
>     Which artifacts (jar files) have you placed on the class path?
> 
> 
>     Brian Moschel wrote:
> 
>         Hey guys,
> 
>         I am noticing an error on startup:
> 
>         java.lang.ClassCastException: org.slf4j.impl.SimpleLoggerFactory
> 
>         I am trying to run the following lines to load my config, which
>         I got from the startup guide:
> 
>         LoggerContext lc = (LoggerContext)
>         LoggerFactory.getILoggerFactory();
>         JoranConfigurator configurator = new JoranConfigurator();
>         lc.reset();
>         configurator.setContext(lc);
>         configurator.doConfigure(my_path);
>         StatusPrinter.printInCaseOfErrorsOrWarnings(lc);
> 
>         The error occurs at the first line in the above code.  I got
>         this working at some point, but somehow am back in a non-working
>         state.  This is a Jetty app.  Any tips?
> 
>         Thanks,
>         Brian
> 
>     -- 
>     Ceki Gülcü
>     Logback: The reliable, generic, fast and flexible logging framework
>     for Java.
>     http://logback.qos.ch
>     _______________________________________________
>     Logback-user mailing list
>     Logback-user at qos.ch
>     http://qos.ch/mailman/listinfo/logback-user
> 
> 
> 
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> 
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-- 
Ceki Gülcü
Logback: The reliable, generic, fast and flexible logging framework for Java.
http://logback.qos.ch