slf4j error with Htmlunit Maven dependency

Question

With the following Maven dependency for Htmlunit,

<dependency>
    <groupId>net.sourceforge.htmlunit</groupId>
    <artifactId>htmlunit</artifactId>
    <version>2.18</version>
</dependency>

I am getting the following error,

SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/mnkb/.m2/repository/ch/qos/logback/logback-classic/1.1.3/logback-classic-1.1.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/mnkb/.m2/repository/org/apache/activemq/activemq-all/5.12.0/activemq-all-5.12.0.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 [ch.qos.logback.classic.util.ContextSelectorStaticBinder]

In my pom.xml, I have even commented out the following dependency,

<!-- <dependency>
            <groupId>com.mattbertolini</groupId>
            <artifactId>liquibase-slf4j</artifactId>
            <version>${liquibase-slf4j.version}</version>
        </dependency> -->

you can refere my pom.xml at the SO post, http://stackoverflow.com/questions/33581831/unable-to-run-htmlunit-application-using-maven-dependency/33603254#33603254. I am using that same pom.xml, but now I am getting slf4j error. — smart987, Nov 09 '15 at 18:42

score 0 · Answer 1 · answered Nov 10 '15 at 09:22

The activemq-all dependency seems to be an uberjar that contains slf4j. Some other dependency seems to pull in slf4j as well. That's why you get this error. If you can try to get rid of the activemq-all dependency, maybe by using activemq-core. Seems to be an issue with ActiveMQ's packaging (see https://issues.apache.org/jira/browse/AMQ-5009).

slf4j error with Htmlunit Maven dependency

1 Answers1