Why does the maven-assembly-plugin puts the same dependency in my zip multiple times?

Answer 1

That is a bug in the assembly plugin. I also noticed that about a year ago. The latest version of the assembly plugin does not have the problem. I would recommend updating the version of the assembly plugin you are using to 2.2 beta 3. It should resolve your issue.

  <plugin>
      <artifactId>maven-assembly-plugin</artifactId>
      <groupId>org.apache.maven.plugins</groupId>
      <version>2.2-beta-3</version>
  </plugin>