Book Image

Apache Maven Cookbook

Book Image

Apache Maven Cookbook

Overview of this book

Table of Contents (18 chapters)
Apache Maven Cookbook
About the Author
About the Reviewers

Working in offline mode

There might be situations where a Maven project needs to be built without access to the Internet. Let us see how Maven supports this, as well as the caveats.

How to do it...

  1. Open a project that you want to build offline.

  2. Run the following command:

    mvn dependency:go-offline 
  3. Observe the output:

  4. Run the following command:

    mvn –o clean package

Observe that the build is completed successfully without any network connection.

How it works...

The go-offline goal of the Maven Dependency plugin downloads all the required dependencies and plugins for the project, based on the pom file. The –o option tells Maven to work offline and not check the Internet for anything.

However, it is not without its issues. On a brand new local repository, the offline option will not work with the following error:

This is a known problem or limitation with the Maven Dependency plugin. The required project has to be built online once to download anything that is missed out by the plugin. Subsequently, the...