[jira] [Resolved] (PDFBOX-4374) Switch from log4j to slf4j

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tilman Hausherr resolved PDFBOX-4374.
-------------------------------------
    Resolution: Fixed

I suspect that something else you're including does have a non-test dependency on log4j. You should look at your "effective" pom.xml (there's a tab in your IDE if it is good) to see who needs it. As soon as some library makes a log output then the log4j jar makes that message when present.

Anyway, it's always good to remove old stuff that isn't needed and so this is now done.

Set to resolved. You can still comment and/or reopen.

> Switch from log4j to slf4j
> --------------------------
>
>                 Key: PDFBOX-4374
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4374
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Utilities
>    Affects Versions: 2.0.12, 3.0.2 JBIG2
>            Reporter: Mihai Nita
>            Assignee: Tilman Hausherr
>            Priority: Minor
>             Fix For: 2.0.13, 3.0.0 PDFBox
>
>
> Hello,
> I would be nice to use slf4j instead of relying explicitly on log4j. ([slf4j.org|http://slf4j.org])
> There are adapters from slf4j to many logger implementations, one of them is log4j.
> The decision of which log engine does not belong in a library, it belongs to the user of that library.
> This was apparently done already by several Apache projects. Searching for slf4j in Jira shows Zookeeper, HBase, HDFS, Parquet, Cloudstack, Nemo, EmpireDB, Oozie, Hadoop, and many others.
>  
> I can offer a patch, I have done such migration before.
> Thank you very much,
> Mihai
>  



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