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.

How can this problem be solved?

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.