I'm trying to package a project using OptaPlanner 6.0.1 libraries into a .jar through IntelliJ IDEA's jar artifact but instead of my manifest.mf containing the standard
Manifest-Version: 1.0
Main-Class: a.b.c.app
the jar uses the one supplied in ecj-3.7.2.jar, one of OptaPlanner's supporting libraries:
Manifest-Version: 1.0
Build-Jdk: 1.6.0_26
Built-By: ibrandt
Created-By: Apache Maven
Archiver-Version: Plexus Archiver
Because of this, a "no main manifest attribute, in appname.jar" error happens when trying to run the app. If I manually replace the manifest in .jar file with mine everything works correctly. Is there anything I can do to fix this?
I keep the libraries in a separate /lib directory and they were added to the root of jar artifact as Extracted Directory, IntelliJ IDEA is v13.0.1.
I had the same problem.
Make sure your MANIFEST.MF is in:
src/main/resources/META_INF/
NOT
src/main/java/META_INF/
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