GitHub action upload artifact to maven repository

Today I had the task to use GitHub actions to automatically publish an open source Java project to the maven repository. The following post should simply explain all steps.

Register account

• Register an account at: https://issues.sonatype.org/projects/OSSRH/issues/
• If your account was approved you can login to Nexus at: https://s01.oss.sonatype.org/

Generate GPG keys

Use the following commands to generate a new key pair and output the secret key to a file “private.pgp”

GitHub action

Create at your repository the following repository secrets:

• OSSRH_USERNAME = The username of your account from sonatype.org
• OSSRH_PASSWORD = The password of your account from sonatype.org
• GPG_PRIVATE_KEY = The content of the private.pgp file
• GPG_PASSPHRASE = The passphrase of your private key

Then you can simply use the following workflow file s.