[2.3.2] SLF4J: Class path contains multiple SLF4J bindings.

[Jeff Steinmetz]

I just switched my app from 2.3.0 to 2.3.2

I am now getting 

SLF4J: Class path contains multiple SLF4J bindings.

SLF4J: Found binding in [jar:file:/Users/jeff/.ivy2/cache/org.slf4j/slf4j-nop/jars/slf4j-nop-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in [jar:file:/Users/jeff/.ivy2/cache/org.slf4j/slf4j-jdk14/jars/slf4j-jdk14-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in [jar:file:/Users/jeff/.ivy2/cache/org.slf4j/slf4j-simple/jars/slf4j-simple-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.

SLF4J: Actual binding is of type [org.slf4j.helpers.NOPLoggerFactory]

I performed a clean / cleared .ivy2 cache, etc.

Still get this warning.

Thoughts?

[Ben McCann]

Hmm, it's because of a workaround we used to stop jdeb from completely blowing up the asset pipeline by pulling in an old version of slf4j.

I'll work on fixing jdeb so that we can use a new version of it and get this fixed in Play 2.3.3

https://github.com/tcurdt/jdeb/pull/174

-Ben

[Megazord]

Thanks, Ben.

It is amazing to see how play developers are even contributing to dependencies in order to fix reported problems. Congratulations, Ben.

Best,

[Ben McCann]

Filed a bug to track the progress of it

https://github.com/playframework/playframework/issues/3206

[Jinisha Patel]

@Ben it did not work for me, these are the errors i am receiving. 

[Ben McCann]

Hmmm. Maybe someone else can jump in here and be of more help. I'm not exactly sure how you would figure out what it is that's pulling in those two jars

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[Will Sargent]

You could look at https://github.com/gilt/sbt-dependency-graph-sugar for the dependencies.

Will Sargent

Consultant, Professional Services

Typesafe, the company behind Play Framework, Akka and Scala

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[Mustafa Dumlupinar]

I had have same problem when I use activemq library. I couldn't find any workaround. At the end: I open the activemq.jar and remove the slf4j package. Then problem is gone.

Sorry, My English is bad.

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İyi çalışmalar...

Mustafa DUMLUPINAR
http://mdpinar.blogspot.com/

[Jinisha Patel]

where is this Jar located?

[Mustafa Dumlupinar]

activemq.jar locates in app/lib folder.