java - Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError.

Question

I have used xuggle library in my project to trans code the video from mp4 to flv. I have used slf4j libraries also to support logging end.

import com.xuggle.mediatool.IMediaReader;
import com.xuggle.mediatool.IMediaViewer;
import com.xuggle.mediatool.IMediaWriter;
import com.xuggle.mediatool.ToolFactory;

public class TranscodingExample {

    private static final String inputFilename = "E:\VIDEO\Facebook.mp4";
    private static final String outputFilename = "E:\VIDEO\Facebook.flv";

    public static void main(String[] args) {

        // create a media reader
        IMediaReader mediaReader = 
               ToolFactory.makeReader(inputFilename);

        // create a media writer
        IMediaWriter mediaWriter = 
               ToolFactory.makeWriter(outputFilename, mediaReader);

        // add a writer to the reader, to create the output file
        mediaReader.addListener(mediaWriter);

        // create a media viewer with stats enabled
        IMediaViewer mediaViewer = ToolFactory.makeViewer(true);

        // add a viewer to the reader, to see the decoded media
        mediaReader.addListener(mediaViewer);

        // read and decode packets from the source file and
        // and dispatch decoded audio and video to the writer
        while (mediaReader.readPacket() == null) ;

    }

}

Here I am getting an error

"Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError.". 

I have used both jar files as libraries in order to solve logging problems. Does any one faced the same problem.If so kindly write suggestion or solution to come out of this mess. Thanks in advance.

Answer 1

So you have to exclude conflict dependencies. Try this:

<exclusions>
  <exclusion> 
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
  </exclusion>
  <exclusion> 
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
  </exclusion>
</exclusions> 

This solved same problem with slf4j and Dozer.