Publishing Grails 3 applications to Nexus Repository OSS using Gradle

To publish a Grails 3 application to Nexus Repository OSS you just need to make a few tweaks to the build.gradle file.  Just add the Gradle maven-publish plugin and a publishing closure to the build.gradle file and you are ready to push to your private Nexus Repository OSS server.

	apply plugin:"maven-publish"
	// Other closure blocks
	publishing {
	publications {
	maven(MavenPublication) {
	from components.java
	}
	}
	repositories {
	maven {
	credentials {
	username NEXUS_USERNAME
	password NEXUS_PASSWORD
	}
	url "https://[my.nexus.repo]/repository/releases/"
	}
	}
	}

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Above, the NEXUS_USERNAME and NEXUS_PASSWORD are parameters that you store in gradle.properties and can overwrite with command line parameters, such as

./gradlew -PNEXUS_USERNAME=[your_username] -PNEXUS_PASSWORD=[your_password] publish

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