Goals Overview

The Dependency plugin has several goals:

• dependency:analyze analyzes the dependencies of this project and determines which are: used and declared; used and undeclared; unused and declared.
• dependency:analyze-dep-mgt analyzes your projects dependencies and lists mismatches between resolved dependencies and those listed in your dependencyManagement section.
• dependency:analyze-only is the same as analyze, but is meant to be bound in a pom. It does not fork the build and execute test-compile.
• dependency:analyze-report analyzes the dependencies of this project and produces a report that summarises which are: used and declared; used and undeclared; unused and declared.
• dependency:analyze-duplicate analyzes the dependencies/ and dependencyManagement/ tags in the pom.xml and determines the duplicate declared dependencies.
• dependency:build-classpath tells Maven to output the path of the dependencies from the local repository in a classpath format to be used in java -cp. The classpath file may also be attached and installed/deployed along with the main artifact.
• dependency:copy takes a list of artifacts defined in the plugin configuration section and copies them to a specified location, renaming them or stripping the version if desired. This goal can resolve the artifacts from remote repositories if they don't exist in either the local repository or the reactor.
• dependency:copy-dependencies takes the list of project direct dependencies and optionally transitive dependencies and copies them to a specified location, stripping the version if desired. This goal can also be run from the command line.
• dependency:get resolves a single artifact, eventually transitively, from a specified remote repository.
• dependency:go-offline tells Maven to resolve everything this project is dependent on (dependencies, plugins, reports) in preparation for going offline.
• dependency:list alias for resolve that lists the dependencies for this project.
• dependency:properties set a property for each project dependency containing the to the artifact on the file system.
• dependency:purge-local-repository tells Maven to clear dependency artifact files out of the local repository, and optionally re-resolve them.
• dependency:resolve tells Maven to resolve all dependencies and displays the version.
• dependency:resolve-plugins Tells Maven to resolve plugins and their dependencies.
• dependency:sources tells Maven to resolve all dependencies and their source attachments, and displays the version.
• dependency:tree displays the dependency tree for this project.
• dependency:unpack like copy but unpacks.
• dependency:unpack-dependencies like copy-dependencies but unpacks.

Usage

General instructions on how to use the Dependency Plugin can be found on the usage page. Some more specific use cases are described in the examples given below. Last but not least, users occasionally contribute additional examples, tips or errata to the plugin's wiki page.

In case you still have questions regarding the plugin's usage, please have a look at the FAQ and feel free to contact the user mailing list. The posts to the mailing list are archived and could already contain the answer to your question as part of an older thread. Hence, it is also worth browsing/searching the mail archive.

If you feel like the plugin is missing a feature or has a defect, you can fill a feature request or bug report in our issue tracker. When creating a new issue, please provide a comprehensive description of your concern. Especially for fixing bugs it is crucial that the developers can reproduce your problem. For this reason, entire debug logs, POMs or most preferably little demo projects attached to the issue are very much appreciated. Of course, patches are welcome, too. Contributors can check out the project from our source repository and will find supplementary information in the guide to helping with Maven.

Examples

The following examples show how to use the dependency plugin in more advanced use-cases:

• Instructions on how to prepare your dependencies for upgrade to Maven 2.0.6 / 2.1.
• Copying Specific Artifacts
• Copying Project Dependencies
• Unpacking Specific Artifacts
• Unpacking the Project Dependencies
• Using Project Dependencies' Sources
• Failing the Build on Dependency Analysis Warnings
• Filtering the Dependency Tree
• Resolving Conflicts Using the Dependency Tree
• Purging the local repository

Resources

Here is a link that provides more reference regarding dependencies (i.e. dependency management, transitive dependencies).

• Dependency Mechanism