Packaging jar is invalid Aggregator project need pom as packaging

To make things short: if your parent-aggregator project don’t contains source code (and it’s a good practice), just add this to your parent pom.xml:

<packaging>pom</packaging>

If the parent project contains source code, I strongly suggest you to:

• move this code in a new module (let’s call it commons)
• make commons a child module of your parent project
• add the commons module as a dependency of all other modules requiring it (maybe all of them)
• add <packaging>pom</packaging> in the parent pom.xml