Book Image

Maven Essentials

By : Russell E Gold, Prabath Siriwardena
5 (1)
Book Image

Maven Essentials

5 (1)
By: Russell E Gold, Prabath Siriwardena

Overview of this book

Maven is the #1 build tool used by developers and it has been around for more than a decade. Maven stands out among other build tools due to its extremely extensible architecture, which is built on of the concept of convention over configuration. It’s widely used by many open source Java projects under Apache Software Foundation, Sourceforge, Google Code, and more. Maven Essentials is a fast-paced guide to show you the key concepts in Maven and build automation. We get started by introducing you to Maven and exploring its core concepts and architecture. Next, you will learn about and write a Project Object Model (POM) while creating your own Maven project. You will also find out how to create custom archetypes and plugins to establish the most common goals in build automation. After this, you’ll get to know how to design the build to prevent any maintenance nightmares, with proper dependency management. We then explore Maven build lifecycles and Maven assemblies. Finally, you will discover how to apply the best practices when designing a build system to improve developer productivity.
Table of Contents (15 chapters)
Maven Essentials
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface
Index

Assembly help


As we discussed earlier, the assembly plugin currently only has two active goals: single and help; all the others are deprecated. As we witnessed in the previous example, the single goal is responsible for creating the archive with all sorts of other configurations.

The following command shows how to execute the help goal of the assembly plugin. This has to be executed from a directory with a POM file:

$ mvn assembly:help -Ddetail=true

If you see the following error when you run this command, you may not have the latest version. In that case, update the plugin version to 2.4.1 or later:

[ERROR] Could not find goal 'help' in plugin org.apache.maven.plugins:maven-assembly-plugin:2.2-beta-2 among available goals assembly, attach-assembly-descriptor, attach-component-descriptor, attached, directory-inline, directory, directory-single, single, unpack -> [Help 1]