[slf4j-user] SLF4J and OSGi : LoggerFactory could not be successfully initialized

[Hirt, Dominik]

Hi,

I try to use SLF4J together with LOGBACK within an OSGi Runtime Environment within Eclipse.
I use the 'official' OSGi bundle com.springsource.slf4j.api-1.5.6.jar from SpringSource and create two OSGi bundles with Eclipse for LogBack.core and Logback.classic for current 0.9.14 because there are only  0.9.9 bundle existing on SpringSource repository.
My application bundles requires all those bundles and I try to get the logger by 

final Logger logger = LoggerFactory.getLogger(Activator.class);

During runtime, nothing happens the application bundles remains in RESOLVED osgi state and if I try to start it manually  on the Eclipse OSGi console I've got the following Exception:

Caused by: java.lang.IllegalStateException: org.slf4j.LoggerFactory could not be successfully initialized. See also http://www.slf4j.org/codes.html#unsuccessfulInit
	at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:242)
	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:208)
	at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:221)
	at com.wincor.client.main.Activator.<init>(Activator.java:10)

Unfortunately, the mentioned URL doesn't exists...

Additionally, I create a fragment bundle for logback.core with the logback.xml config file, but with the same result....

What is the reason for the exception and how I can fix my setup ?

Kind regards
Dominik

--------------------------------------------
Dipl.-Inf. Dominik Hirt

Wincor Nixdorf International GmbH
BD PSD 7,
Hauptstraße 103
04416 Markkleeberg

Tel. : +49 341 35413 57
mailto:Dominik.Hirt at Wincor-Nixdorf.com

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