Re: [logback-user] breaking on startup

13 May 2009

      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@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
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