On Tue, Oct 23, 2007 at 09:49:25AM -0700, Sasha O wrote:
> Hello Wicket people --
>
> Love the framework so far.
>
> Getting this message, have no idea how to deal with it:
>
> <<<
> Exception in thread "ModificationWatcher Task"
> java.lang.AbstractMethodError:
> org.slf4j.impl.Log4jLoggerAdapter.isTraceEnabled()Z
> at org.apache.wicket.util.thread.Task$1.run(Task.java:103)
> at java.lang.Thread.run(Thread.java:595)
> >>>
>
> Apparently it relates to slf4j which otherwise seems to be working fine.
>
> Thanks for your help,
> -- Sasha
>
Hi Sasha,
I recently had this problem when upgrading from beta2 to beta4. Check
your version of slf4j-log4j12 (assuming you're using log4j-1.2.*). The
version should match the version of slf4j-api that Wicket uses. For
beta4 it's 1.4.2. The following dependency in pom.xml did the trick for
me:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.4.2</version>
</dependency>
jk
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