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From "Michael Osipov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MNG-5961) Maven possibly not aware of log4j2
Date Thu, 14 Jan 2016 09:31:39 GMT

    [ https://issues.apache.org/jira/browse/MNG-5961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15097881#comment-15097881
] 

Michael Osipov commented on MNG-5961:
-------------------------------------

I think this is a duplicate of MNG-3507.

> Maven possibly not aware of log4j2
> ----------------------------------
>
>                 Key: MNG-5961
>                 URL: https://issues.apache.org/jira/browse/MNG-5961
>             Project: Maven
>          Issue Type: Bug
>          Components: Logging
>    Affects Versions: 3.3.9
>            Reporter: Mike Drob
>
> Using a fresh install of maven 3.3.9 I followed the steps at https://garygregory.wordpress.com/2015/03/23/watch-maven-in-color
to add color highlighting to my output. Everything works as expected, however on all usages
I would get the warning:
> {noformat}
> [WARN] The SLF4J binding actually used is not supported by Maven: org.apache.logging.slf4j.Log4jLoggerFactory
> [WARN] Maven supported bindings are:
> [WARN] (from jar:file:/opt/apache-maven-3.3.9/lib/maven-embedder-3.3.9.jar!/META-INF/maven/slf4j-configuration.properties)
> - ch.qos.logback.classic.LoggerContext
> - org.slf4j.helpers.Log4jLoggerFactory
> - org.slf4j.impl.SimpleLoggerFactory
> {noformat}
> This looks pretty harmless, and I was able to suppress it by manually adding the line
> {code}
> org.apache.logging.slf4j.Log4jLoggerFactory org.apache.maven.cli.logging.impl.Log4j2Configuration
> {code}
> to {{/META-INF/maven/slf4j-configuration.properties}} in {{maven-embedder-3.3.9.jar}}.
> I'm not sure that this is a "correct" solution, and I'm not even confident I could explain
what effect it has, hence not posting a patch, but somebody with more knowledge might be able
to triage this better. Or offer an "official" way to do colorized output.



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