Deployment on Tomcat: Constraint violation when resolving method “org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;”

Question

I\'m deploying Shibboleth IdP 3.1.1 on Tomcat 8.0.22, but I receive this error:

SEVERE [http-nio-8080-exec-13] org.apache.catalina.core.StandardContext.listenerS         


        

Answer 1

This mean you probably have two different librairies of slf4j in your war

org/slf4j/impl/StaticLoggerBinder, have different Class objects for the type LoggerFactory; used in the signature

You can use that command to find slf4j dependencies injected in your application.

mvn dependency:tree -Dverbose -Dincludes=commons-collections

resolving conflicts using the dependency tree

And Exclude dependancies in Maven:

    
    [...]
    
        
            org.slf4j
            slf4j-api
        
    

You can also unzip your war file and look in WEB-INF/lib/ to find the different versions of slf4j that you have.