Prevent Flyway Maven Plugin from downloading old slf4j jars - maven

Question

When I run the flyway maven plugin it initially downloads the slf4j jars with a version of 1.5.6:
[INFO] ------------------------------------------------------------------------
Downloading: http://repo1.maven.org/maven2/org/slf4j/slf4j-jdk14/1.5.6/slf4j-jdk14-1.5.6.pom
Downloaded: http://repo1.maven.org/maven2/org/slf4j/slf4j-jdk14/1.5.6/slf4j-jdk14-1.5.6.pom (2 KB at 21.3 KB/sec)
Downloading: http://repo1.maven.org/maven2/org/slf4j/slf4j-parent/1.5.6/slf4j-parent-1.5.6.pom
Downloaded: http://repo1.maven.org/maven2/org/slf4j/slf4j-parent/1.5.6/slf4j-parent-1.5.6.pom (8 KB at 154.7 KB/sec)
This plays havoc with my Spring web app as I'm using version 1.7.2 of slf4j there and it gets confused when I restart it.
How can I prevent this? I've tried adding exclusions to my pom.xml:
<groupId>com.googlecode.flyway</groupId>
<artifactId>flyway-maven-plugin</artifactId>
<version>2.0.3</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
</exclusion>
</exclusions>
but this still happens.
UPDATE: what this is causing is the following error when I build with Intellij 12:
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/Users/tom/Library/Caches/IntelliJIdea12/tomcat/Unnamed_incrowdnow/work/Catalina/localhost/_/WEB-INF/lib/slf4j-jdk14-1.5.6.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/Users/tom/Library/Caches/IntelliJIdea12/tomcat/Unnamed_incrowdnow/work/Catalina/localhost/_/WEB-INF/lib/slf4j-simple-1.7.2.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.impl.JDK14LoggerFactory]
SLF4J: The requested version 1.5.6 by your slf4j binding is not compatible with [1.6, 1.7]
SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details.
UPDATE: output of
mvn dependency:tree -Dverbose -Dincludes=org.slf4j
[INFO] \- com.googlecode.flyway:flyway-maven-plugin:jar:2.0.3:compile
[INFO] \- org.apache.maven:maven-core:jar:2.2.1:compile
[INFO] +- org.apache.maven.wagon:wagon-webdav-jackrabbit:jar:1.0-beta-6:runtime
[INFO] | +- org.apache.jackrabbit:jackrabbit-webdav:jar:1.5.0:runtime
[INFO] | | \- (org.slf4j:slf4j-api:jar:1.5.3:runtime - omitted for conflict with 1.7.2)
[INFO] | \- org.slf4j:slf4j-nop:jar:1.5.3:runtime
[INFO] | \- (org.slf4j:slf4j-api:jar:1.5.3:runtime - omitted for conflict with 1.7.2)
[INFO] +- org.slf4j:slf4j-jdk14:jar:1.5.6:runtime
[INFO] | \- (org.slf4j:slf4j-api:jar:1.5.6:runtime - omitted for conflict with 1.7.2)
[INFO] \- (org.slf4j:jcl-over-slf4j:jar:1.5.6:runtime - omitted for conflict with 1.7.2)
TIA,
Tom

Answer 1

Neither the Flyway Maven plugin 2.0.3, nor Flyway Core 2.0.3 depend on slf4j. Check your dependencies. The problem must be coming from somewhere else.

Answer 2

I had similar problem and solved it by using flyway-core dependency instead of flyway-maven-plugin dependency.

Answer 3

FLyway downloads slf4j dependencies, if your application uses 1.7.x or 1.6.x versions, then you will encounter this issue, since flyway downloads slf4j-nop of 1.5.3 version and slf4j-jdk14 of 1.5.6 version. In eclipse, you can see this under Dependency hierarchy of pom.xml
In order to get rid of this, add all the following exclusiions and you are done
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
</exclusion>
</exclusions>