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https://issues.apache.org/jira/browse/MCHECKSTYLE-309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Osipov closed MCHECKSTYLE-309.
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Resolution: Incomplete
> Upgrade SLF4J dependency version
> --------------------------------
>
> Key: MCHECKSTYLE-309
> URL: https://issues.apache.org/jira/browse/MCHECKSTYLE-309
> Project: Maven Checkstyle Plugin
> Issue Type: Bug
> Reporter: Konstantin Pokrovsky
> Priority: Minor
> Labels: close-pending
>
> Checkstyle has dependencies on old SLF4J versions: slf4j-jdk14-1.5.6 and
> jcl-over-slf4j-1.5.6. Maven 3.3.3 provide SLF4J 1.7.5 in its libs. By default
> maven use simple provider for slf4j and it is backward compatible to API
> 1.5.6. But when I change the provier to logback API compatibility breaks:
> {noformat}
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check (default) on
> project rt: Execution default of goal
> org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check failed: An API
> incompatibility was encountered while executing
> org.apache.maven.plugins:maven-checkstyle-plugin:2.16:check:
> java.lang.NoSuchMethodError:
> org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;Ljava/lang/Throwable;)V
> [ERROR] -----------------------------------------------------
> [ERROR] realm =
> plugin>org.apache.maven.plugins:maven-checkstyle-plugin:2.16
> [ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
> [ERROR] urls[0] =
> file:/C:/Users/kpokrovsky/.m2/repository/org/apache/maven/plugins/maven-checkstyle-plugin/2.16/maven-checkstyle-plugin-2.16.jar
> [ERROR] urls[1] =
> file:/C:/Users/kpokrovsky/.m2/repository/org/slf4j/slf4j-jdk14/1.5.6/slf4j-jdk14-1.5.6.jar
> [ERROR] urls[2] =
> file:/C:/Users/kpokrovsky/.m2/repository/org/slf4j/jcl-over-slf4j/1.5.6/jcl-over-slf4j-1.5.6.jar
> [ERROR] urls[3] =
> file:/C:/Users/kpokrovsky/.m2/repository/junit/junit/3.8.1/junit-3.8.1.jar
> {noformat}
> Please refer to http://www.slf4j.org/faq.html#compatibility - while API is
> backward compatible, bindings are not. So checkstyle has to keep its SLF4J
> versions in sync with maven's SLF4J providers.
> For now problem can be fixed by overriding plugin's dependencies:
> {noformat}
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-checkstyle-plugin</artifactId>
> <version>2.16</version>
> <dependencies>
> <dependency>
> <groupId>org.slf4j</groupId>
> <artifactId>slf4j-jdk14</artifactId>
> <version>1.7.5</version>
> </dependency>
> <dependency>
> <groupId>org.slf4j</groupId>
> <artifactId>jcl-over-slf4j</artifactId>
> <version>1.7.5</version>
> </dependency>
> </dependencies>
> </plugin>
> {noformat}
> BTW, for some reason the issue does not appear on maven 3.2.3.
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