Konstantin Pokrovsky created MCHECKSTYLE-309:
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Summary: 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
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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