用Maven重新打包已构建的JAR

Question

What is the easiest way to repack a JAR that was built with an external packaging tool?

So I have a tool that compiles and packages a library into a jar (execution is called in prepare-package phase). I want to unzip the jar and repack it again with maven-jar-plugin. What would be the easiest way to do that?

Answer 1

I don't see why you'd want to repackage a JAR, unless you want to modify its manifest or add some resources...

Anyway, you could use the unpack goal of the maven-dependency-plugin to unpack that JAR to a given directory, eg the target/classes directory containing some other resources of your current project.