java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory

[wadijm]

Hi all!I'm facing some trouble running the wicket stuff examples because no
one start due to java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory

 exception.I'm using netbeans 6.5 and netbeans.

Thanks,

Wadi

[rmattler]

NoClassDefFoundError means that netbeans or the server can't find a file.

I'm guessing that it can't find the slf4j.jar  http://www.slf4j.org/faq.html

From the wicket site:

Important note about logging dependencies for 1.3.0 and later.

As of Wicket 1.3.0, Wicket uses the SLF4J project for logging. SLF4J is similar to commons-logging, in that it allows libraries/frameworks like Wicket to avoid forcing a choice of logging framework on their users.

You cannot use Wicket without adding an SLF4J logging implementation to your classpath. Most people use log4j. If you do, just include slf4j-log4j12.jar on your classpath to get Wicket to use log4j too. If you want to use commons-logging or JDK14 logging or something else, please see the SLF4J site for more information.

wadi wrote

Hi all!I'm facing some trouble running the wicket stuff examples because no
one start due to java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory

 exception.I'm using netbeans 6.5 and netbeans.

Thanks,

Wadi

[wadijm]

Thanks!

-----Mensaje original-----
De: rmattler [mailto:[hidden email]]
Enviado el: jueves, 29 de enero de 2009 11:55
Para: [hidden email]
Asunto: Re: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory


NoClassDefFoundError means that netbeans or the server can't find a file.

I'm guessing that it can't find the slf4j.jar  http://www.slf4j.org/faq.html

From the wicket site:

Important note about logging dependencies for 1.3.0 and later.

As of Wicket 1.3.0, Wicket uses the SLF4J project for logging. SLF4J is
similar to commons-logging, in that it allows libraries/frameworks like
Wicket to avoid forcing a choice of logging framework on their users.

You cannot use Wicket without adding an SLF4J logging implementation to your
classpath. Most people use log4j. If you do, just include slf4j-log4j12.jar
on your classpath to get Wicket to use log4j too. If you want to use
commons-logging or JDK14 logging or something else, please see the SLF4J
site for more information.



wadi wrote:

>
> Hi all!I'm facing some trouble running the wicket stuff examples because
> no
> one start due to java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
>
>  exception.I'm using netbeans 6.5 and netbeans.
>
> Thanks,
>
> Wadi
>
>
>

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