[slf4j-dev] [Bug 138] Class path contains multiple SLF4J bindings

[bugzilla-daemon at pixie.qos.ch]

http://bugzilla.slf4j.org/show_bug.cgi?id=138

josh at kivasystems.com changed:

           What    |Removed                     |Added
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                 CC|                            |josh at kivasystems.com

--- Comment #21 from josh at kivasystems.com 2011-05-26 06:15:18 CEST ---
We have exactly this problem, however we are not using Weblogic, we have a
custom framework. 

In our case the problem appears to be because each of our project jar files
list the same slf4j binder in their own manifest class path. Although the
actual -classpath parameter we pass to the JVM lists the binder only once, each
of our jars list the binder in their manifest.

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in
[jar:file:/home/path-to-app/lib/slf4j-log4j12-1.5.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/home/path-to-app/lib/slf4j-log4j12-1.5.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/home/path-to-app/lib/slf4j-log4j12-1.5.10.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.

We are using Maven as our build system and it is creating the manifest
automatically. I'm sure we could tweak the dependencies in our build system to
work through this, but using a Set does seem like the semantically correct
thing to do in this situation anyway.

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