Maven

This is a reference for the Maven project descriptor used in Maven.

An XSD is available at:

<project>
  <parent>
    <artifactId/>
    <groupId/>
    <version/>
    <relativePath/>
  </parent>
  <modelVersion/>
  <groupId/>
  <artifactId/>
  <packaging/>
  <name/>
  <version/>
  <description/>
  <url/>
  <prerequisites>
    <maven/>
  </prerequisites>
  <issueManagement>
    <system/>
    <url/>
  </issueManagement>
  <ciManagement>
    <system/>
    <url/>
    <notifiers>
      <notifier>
        <type/>
        <sendOnError/>
        <sendOnFailure/>
        <sendOnSuccess/>
        <sendOnWarning/>
        <address/>
        <configuration>
          <key>value</key>
        <configuration/>
      </notifier>
    </notifiers>
  </ciManagement>
  <inceptionYear/>
  <mailingLists>
    <mailingList>
      <name/>
      <subscribe/>
      <unsubscribe/>
      <post/>
      <archive/>
      <otherArchives/>
    </mailingList>
  </mailingLists>
  <developers>
    <developer>
      <id/>
      <name/>
      <email/>
      <url/>
      <organization/>
      <organizationUrl/>
      <roles/>
      <timezone/>
      <properties>
        <key>value</key>
      <properties/>
    </developer>
  </developers>
  <contributors>
    <contributor>
      <name/>
      <email/>
      <url/>
      <organization/>
      <organizationUrl/>
      <roles/>
      <timezone/>
      <properties>
        <key>value</key>
      <properties/>
    </contributor>
  </contributors>
  <licenses>
    <license>
      <name/>
      <url/>
      <distribution/>
      <comments/>
    </license>
  </licenses>
  <scm>
    <connection/>
    <developerConnection/>
    <tag/>
    <url/>
  </scm>
  <organization>
    <name/>
    <url/>
  </organization>
  <build>
    <sourceDirectory/>
    <scriptSourceDirectory/>
    <testSourceDirectory/>
    <outputDirectory/>
    <testOutputDirectory/>
    <extensions>
      <extension>
        <groupId/>
        <artifactId/>
        <version/>
      </extension>
    </extensions>
    <defaultGoal/>
    <resources>
      <resource>
        <targetPath/>
        <filtering/>
        <directory/>
        <includes/>
        <excludes/>
      </resource>
    </resources>
    <testResources>
      <testResource>
        <targetPath/>
        <filtering/>
        <directory/>
        <includes/>
        <excludes/>
      </testResource>
    </testResources>
    <directory/>
    <finalName/>
    <filters/>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId/>
          <artifactId/>
          <version/>
          <extensions/>
          <executions>
            <execution>
              <id/>
              <phase/>
              <goals/>
              <inherited/>
              <configuration/>
            </execution>
          </executions>
          <dependencies>
            <dependency>
              <groupId/>
              <artifactId/>
              <version/>
              <type/>
              <classifier/>
              <scope/>
              <systemPath/>
              <exclusions>
                <exclusion>
                  <artifactId/>
                  <groupId/>
                </exclusion>
              </exclusions>
              <optional/>
            </dependency>
          </dependencies>
          <goals/>
          <inherited/>
          <configuration/>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>
        <groupId/>
        <artifactId/>
        <version/>
        <extensions/>
        <executions>
          <execution>
            <id/>
            <phase/>
            <goals/>
            <inherited/>
            <configuration/>
          </execution>
        </executions>
        <dependencies>
          <dependency>
            <groupId/>
            <artifactId/>
            <version/>
            <type/>
            <classifier/>
            <scope/>
            <systemPath/>
            <exclusions>
              <exclusion>
                <artifactId/>
                <groupId/>
              </exclusion>
            </exclusions>
            <optional/>
          </dependency>
        </dependencies>
        <goals/>
        <inherited/>
        <configuration/>
      </plugin>
    </plugins>
  </build>
  <profiles>
    <profile>
      <id/>
      <activation>
        <activeByDefault/>
        <jdk/>
        <os>
          <name/>
          <family/>
          <arch/>
          <version/>
        </os>
        <property>
          <name/>
          <value/>
        </property>
        <file>
          <missing/>
          <exists/>
        </file>
        <custom>
          <configuration/>
          <type/>
        </custom>
      </activation>
      <build>
        <defaultGoal/>
        <resources>
          <resource>
            <targetPath/>
            <filtering/>
            <directory/>
            <includes/>
            <excludes/>
          </resource>
        </resources>
        <testResources>
          <testResource>
            <targetPath/>
            <filtering/>
            <directory/>
            <includes/>
            <excludes/>
          </testResource>
        </testResources>
        <directory/>
        <finalName/>
        <filters/>
        <pluginManagement>
          <plugins>
            <plugin>
              <groupId/>
              <artifactId/>
              <version/>
              <extensions/>
              <executions>
                <execution>
                  <id/>
                  <phase/>
                  <goals/>
                  <inherited/>
                  <configuration/>
                </execution>
              </executions>
              <dependencies>
                <dependency>
                  <groupId/>
                  <artifactId/>
                  <version/>
                  <type/>
                  <classifier/>
                  <scope/>
                  <systemPath/>
                  <exclusions>
                    <exclusion>
                      <artifactId/>
                      <groupId/>
                    </exclusion>
                  </exclusions>
                  <optional/>
                </dependency>
              </dependencies>
              <goals/>
              <inherited/>
              <configuration/>
            </plugin>
          </plugins>
        </pluginManagement>
        <plugins>
          <plugin>
            <groupId/>
            <artifactId/>
            <version/>
            <extensions/>
            <executions>
              <execution>
                <id/>
                <phase/>
                <goals/>
                <inherited/>
                <configuration/>
              </execution>
            </executions>
            <dependencies>
              <dependency>
                <groupId/>
                <artifactId/>
                <version/>
                <type/>
                <classifier/>
                <scope/>
                <systemPath/>
                <exclusions>
                  <exclusion>
                    <artifactId/>
                    <groupId/>
                  </exclusion>
                </exclusions>
                <optional/>
              </dependency>
            </dependencies>
            <goals/>
            <inherited/>
            <configuration/>
          </plugin>
        </plugins>
      </build>
      <modules/>
      <repositories>
        <repository>
          <releases>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </releases>
          <snapshots>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </snapshots>
          <id/>
          <name/>
          <url/>
          <layout/>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <releases>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </releases>
          <snapshots>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </snapshots>
          <id/>
          <name/>
          <url/>
          <layout/>
        </pluginRepository>
      </pluginRepositories>
      <dependencies>
        <dependency>
          <groupId/>
          <artifactId/>
          <version/>
          <type/>
          <classifier/>
          <scope/>
          <systemPath/>
          <exclusions>
            <exclusion>
              <artifactId/>
              <groupId/>
            </exclusion>
          </exclusions>
          <optional/>
        </dependency>
      </dependencies>
      <reports/>
      <reporting>
        <excludeDefaults/>
        <outputDirectory/>
        <plugins>
          <plugin>
            <groupId/>
            <artifactId/>
            <version/>
            <inherited/>
            <configuration/>
            <reportSets>
              <reportSet>
                <id/>
                <configuration/>
                <inherited/>
                <reports/>
              </reportSet>
            </reportSets>
          </plugin>
        </plugins>
      </reporting>
      <dependencyManagement>
        <dependencies>
          <dependency>
            <groupId/>
            <artifactId/>
            <version/>
            <type/>
            <classifier/>
            <scope/>
            <systemPath/>
            <exclusions>
              <exclusion>
                <artifactId/>
                <groupId/>
              </exclusion>
            </exclusions>
            <optional/>
          </dependency>
        </dependencies>
      </dependencyManagement>
      <distributionManagement>
        <repository>
          <uniqueVersion/>
          <id/>
          <name/>
          <url/>
          <layout/>
        </repository>
        <snapshotRepository>
          <uniqueVersion/>
          <id/>
          <name/>
          <url/>
          <layout/>
        </snapshotRepository>
        <site>
          <id/>
          <name/>
          <url/>
        </site>
        <downloadUrl/>
        <relocation>
          <groupId/>
          <artifactId/>
          <version/>
          <message/>
        </relocation>
        <status/>
      </distributionManagement>
      <properties>
        <key>value</key>
      <properties/>
    </profile>
  </profiles>
  <modules/>
  <repositories>
    <repository>
      <releases>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </releases>
      <snapshots>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </snapshots>
      <id/>
      <name/>
      <url/>
      <layout/>
    </repository>
  </repositories>
  <pluginRepositories>
    <pluginRepository>
      <releases>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </releases>
      <snapshots>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </snapshots>
      <id/>
      <name/>
      <url/>
      <layout/>
    </pluginRepository>
  </pluginRepositories>
  <dependencies>
    <dependency>
      <groupId/>
      <artifactId/>
      <version/>
      <type/>
      <classifier/>
      <scope/>
      <systemPath/>
      <exclusions>
        <exclusion>
          <artifactId/>
          <groupId/>
        </exclusion>
      </exclusions>
      <optional/>
    </dependency>
  </dependencies>
  <reports/>
  <reporting>
    <excludeDefaults/>
    <outputDirectory/>
    <plugins>
      <plugin>
        <groupId/>
        <artifactId/>
        <version/>
        <inherited/>
        <configuration/>
        <reportSets>
          <reportSet>
            <id/>
            <configuration/>
            <inherited/>
            <reports/>
          </reportSet>
        </reportSets>
      </plugin>
    </plugins>
  </reporting>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId/>
        <artifactId/>
        <version/>
        <type/>
        <classifier/>
        <scope/>
        <systemPath/>
        <exclusions>
          <exclusion>
            <artifactId/>
            <groupId/>
          </exclusion>
        </exclusions>
        <optional/>
      </dependency>
    </dependencies>
  </dependencyManagement>
  <distributionManagement>
    <repository>
      <uniqueVersion/>
      <id/>
      <name/>
      <url/>
      <layout/>
    </repository>
    <snapshotRepository>
      <uniqueVersion/>
      <id/>
      <name/>
      <url/>
      <layout/>
    </snapshotRepository>
    <site>
      <id/>
      <name/>
      <url/>
    </site>
    <downloadUrl/>
    <relocation>
      <groupId/>
      <artifactId/>
      <version/>
      <message/>
    </relocation>
    <status/>
  </distributionManagement>
  <properties>
    <key>value</key>
  <properties/>
</project>

project

The <project> element is the root of the descriptor. The following table lists all of the possible child elements.

Element Type Description
parent Parent The location of the parent project, if one exists. Values from the parent project will be the default for this project if they are left unspecified. The location is given as a group ID, artifact ID and version.
modelVersion String Declares to which version of project descriptor this POM conforms.
groupId String A universally unique identifier for a project. It is normal to use a fully-qualified package name to distinguish it from other projects with a similar name (eg. org.apache.maven).
artifactId String The identifier for this artifact that is unique within the group given by the group ID. An artifact is something that is either produced or used by a project. Examples of artifacts produced by Maven for a project include: JARs, source and binary distributions, and WARs.
packaging String The type of artifact this project produces, for example jar war ear pom. Plugins can create their own packaging, and therefore their own packaging types, so this list does not contain all possible types.
Default value is: jar.
name String The full name of the project.
version String The current version of the artifact produced by this project.
description String A detailed description of the project, used by Maven whenever it needs to describe the project, such as on the web site. While this element can be specified as CDATA to enable the use of HTML tags within the description, it is discouraged to allow plain text representation. If you need to modify the index page of the generated web site, you are able to specify your own instead of adjusting this text.
url String The URL to the project's homepage.
prerequisites Prerequisites Describes the prerequisites in the build environment for this project.
issueManagement IssueManagement The project's issue management system information.
ciManagement CiManagement The project's continuous integration information.
inceptionYear String The year of the project's inception, specified with 4 digits. This value is used when generating copyright notices as well as being informational.
mailingLists/mailingList* List<MailingList> (Many) Contains information about a project's mailing lists.
developers/developer* List<Developer> (Many) Describes the committers of a project.
contributors/contributor* List<Contributor> (Many) Describes the contributors to a project that are not yet committers.
licenses/license* List<License> (Many) This element describes all of the licenses for this project. Each license is described by a license element, which is then described by additional elements. Projects should only list the license(s) that applies to the project and not the licenses that apply to dependencies. If multiple licenses are listed, it is assumed that the user can select any of them, not that they must accept all.
scm Scm Specification for the SCM used by the project, such as CVS, Subversion, etc.
organization Organization This element describes various attributes of the organization to which the project belongs. These attributes are utilized when documentation is created (for copyright notices and links).
build Build Information required to build the project.
profiles/profile* List<Profile> (Many) A listing of project-local build profiles which will modify the build process when activated.
modules/module* List<String> (Many) The modules (sometimes called subprojects) to build as a part of this project. Each module listed is a relative path to the directory containing the module.
repositories/repository* List<Repository> (Many) The lists of the remote repositories for discovering dependencies and extensions.
pluginRepositories/pluginRepository* List<Repository> (Many) The lists of the remote repositories for discovering plugins for builds and reports.
dependencies/dependency* List<Dependency> (Many) This element describes all of the dependencies associated with a project. These dependencies are used to construct a classpath for your project during the build process. They are automatically downloaded from the repositories defined in this project. See the dependency mechanism for more information.
reports DOM Deprecated. Now ignored by Maven.
reporting Reporting This element includes the specification of report plugins to use to generate the reports on the Maven-generated site. These reports will be run when a user executes mvn site. All of the reports will be included in the navigation bar for browsing.
dependencyManagement DependencyManagement Default dependency information for projects that inherit from this one. The dependencies in this section are not immediately resolved. Instead, when a POM derived from this one declares a dependency described by a matching groupId and artifactId, the version and other values from this section are used for that dependency if they were not already specified.
distributionManagement DistributionManagement Distribution information for a project that enables deployment of the site and artifacts to remote web servers and repositories respectively.
properties/key=value* Properties (Many) Properties that can be used throughout the POM as a substitution, and are used as filters in resources if enabled. The format is <name>value</name>.

parent

No description.

Element Type Description
artifactId String The artifact id of the parent project to inherit from.
groupId String The group id of the parent project to inherit from.
version String The version of the parent project to inherit.
relativePath String The relative path of the parent pom.xml file within the check out. The default value is ../pom.xml. Maven looks for the parent pom first in the reactor of currently building projects, then in this location on the filesystem, then the local repository, and lastly in the remote repo. relativePath allows you to select a different location, for example when your structure is flat, or deeper without an intermediate parent pom. However, the group ID, artifact ID and version are still required, and must match the file in the location given or it will revert to the repository for the POM. This feature is only for enhancing the development in a local checkout of that project.
Default value is: ../pom.xml.

prerequisites

Describes the prerequisites a project can have.

Element Type Description
maven String The minimum version of Maven required to build the project, or to use this plugin.
Default value is: 2.0.

issueManagement

Information about the issue tracking (or bug tracking) system used to manage this project.

Element Type Description
system String The name of the issue management system, e.g. Bugzilla
url String URL for the issue management system used by the project.

ciManagement

No description.

Element Type Description
system String The name of the continuous integration system, e.g. continuum.
url String URL for the continuous integration system used by the project if it has a web interface.
notifiers/notifier* List<Notifier> (Many) Configuration for notifying developers/users when a build is unsuccessful, including user information and notification mode.

notifier

Configures one method for notifying users/developers when a build breaks.

Element Type Description
type String The mechanism used to deliver notifications.
Default value is: mail.
sendOnError boolean Whether to send notifications on error.
Default value is: true.
sendOnFailure boolean Whether to send notifications on failure.
Default value is: true.
sendOnSuccess boolean Whether to send notifications on success.
Default value is: true.
sendOnWarning boolean Whether to send notifications on warning.
Default value is: true.
address String Deprecated. Where to send the notification to - eg email address.
configuration/key=value* Properties (Many) Extended configuration specific to this notifier goes here.

mailingList

This element describes all of the mailing lists associated with a project. The auto-generated site references this information.

Element Type Description
name String The name of the mailing list.
subscribe String The email address or link that can be used to subscribe to the mailing list. If this is an email address, a mailto: link will automatically be created when the documentation is created.
unsubscribe String The email address or link that can be used to unsubscribe to the mailing list. If this is an email address, a mailto: link will automatically be created when the documentation is created.
post String The email address or link that can be used to post to the mailing list. If this is an email address, a mailto: link will automatically be created when the documentation is created.
archive String The link to a URL where you can browse the mailing list archive.
otherArchives/otherArchive* List<String> (Many) The link to alternate URLs where you can browse the list archive.

developer

Information about one of the committers on this project.

Element Type Description
id String The unique ID of the developer in the SCM.
name String The full name of the contributor.
email String The email address of the contributor.
url String The URL for the homepage of the contributor.
organization String The organization to which the contributor belongs.
organizationUrl String The URL of the organization.
roles/role* List<String> (Many) The roles the contributor plays in the project. Each role is described by a role element, the body of which is a role name. This can also be used to describe the contribution.
timezone String The timezone the contributor is in. This is a number in the range -11 to 12.
properties/key=value* Properties (Many) Properties about the contributor, such as an instant messenger handle.

contributor

Description of a person who has contributed to the project, but who does not have commit privileges. Usually, these contributions come in the form of patches submitted.

Element Type Description
name String The full name of the contributor.
email String The email address of the contributor.
url String The URL for the homepage of the contributor.
organization String The organization to which the contributor belongs.
organizationUrl String The URL of the organization.
roles/role* List<String> (Many) The roles the contributor plays in the project. Each role is described by a role element, the body of which is a role name. This can also be used to describe the contribution.
timezone String The timezone the contributor is in. This is a number in the range -11 to 12.
properties/key=value* Properties (Many) Properties about the contributor, such as an instant messenger handle.

license

Describes the licenses for this project. This is used to generate the license page of the project's web site, as well as being taken into consideration in other reporting and validation. The licenses listed for the project are that of the project itself, and not of dependencies.

Element Type Description
name String The full legal name of the license.
url String The official url for the license text.
distribution String The primary method by which this project may be distributed.
repo
may be downloaded from the Maven repository
manual
user must manually download and install the dependency.
comments String Addendum information pertaining to this license.

scm

No description.

Element Type Description
connection String The source control management system URL that describes the repository and how to connect to the repository. For more information, see the URL format and list of supported SCMs. This connection is read-only.
developerConnection String Just like connection, but for developers, i.e. this scm connection will not be read only.
tag String The tag of current code. By default, it's set to HEAD during development.
Default value is: HEAD.
url String The URL to the project's browsable SCM repository, such as ViewVC or Fisheye.

organization

Specifies the organization that produces this project.

Element Type Description
name String The full name of the organization.
url String The URL to the organization's home page.

build

No description.

Element Type Description
sourceDirectory String This element specifies a directory containing the source of the project. The generated build system will compile the source in this directory when the project is built. The path given is relative to the project descriptor.
scriptSourceDirectory String This element specifies a directory containing the script sources of the project. This directory is meant to be different from the sourceDirectory, in that its contents will be copied to the output directory in most cases (since scripts are interpreted rather than compiled).
testSourceDirectory String This element specifies a directory containing the unit test source of the project. The generated build system will compile these directories when the project is being tested. The path given is relative to the project descriptor.
outputDirectory String The directory where compiled application classes are placed.
testOutputDirectory String The directory where compiled test classes are placed.
extensions/extension* List<Extension> (Many) A set of build extensions to use from this project.
defaultGoal String The default goal (or phase in Maven 2) to execute when none is specified for the project.
resources/resource* List<Resource> (Many) This element describes all of the classpath resources such as properties files associated with a project. These resources are often included in the final package.
testResources/testResource* List<Resource> (Many) This element describes all of the classpath resources such as properties files associated with a project's unit tests.
directory String The directory where all files generated by the build are placed.
finalName String The filename (excluding the extension, and with no path information) that the produced artifact will be called. The default value is ${artifactId}-${version}.
filters/filter* List<String> (Many) The list of filter properties files that are used when filtering is enabled.
pluginManagement PluginManagement Default plugin information to be made available for reference by projects derived from this one. This plugin configuration will not be resolved or bound to the lifecycle unless referenced. Any local configuration for a given plugin will override the plugin's entire definition here.
plugins/plugin* List<Plugin> (Many) The list of plugins to use.

extension

Describes a build extension to utilise.

Element Type Description
groupId String The group ID of the extension's artifact.
artifactId String The artifact ID of the extension.
version String The version of the extension.

resource

This element describes all of the classpath resources associated with a project or unit tests.

Element Type Description
targetPath String Describe the resource target path. For example, if you want that resource to appear in a specific package (org.apache.maven.messages), you must specify this element with this value: org/apache/maven/messages. This is not required if you simply put the resources in that directory structure at the source, however.
filtering boolean Whether resources are filtered to replace tokens with parameterised values or not. The values are taken from the properties element and from the properties in the files listed in the filters element.
Default value is: false.
directory String Describe the directory where the resources are stored. The path is relative to the POM.
includes/include* List<String> (Many) A list of patterns to include, e.g. **/*.xml.
excludes/exclude* List<String> (Many) A list of patterns to exclude, e.g. **/*.xml

testResource

This element describes all of the classpath resources associated with a project or unit tests.

Element Type Description
targetPath String Describe the resource target path. For example, if you want that resource to appear in a specific package (org.apache.maven.messages), you must specify this element with this value: org/apache/maven/messages. This is not required if you simply put the resources in that directory structure at the source, however.
filtering boolean Whether resources are filtered to replace tokens with parameterised values or not. The values are taken from the properties element and from the properties in the files listed in the filters element.
Default value is: false.
directory String Describe the directory where the resources are stored. The path is relative to the POM.
includes/include* List<String> (Many) A list of patterns to include, e.g. **/*.xml.
excludes/exclude* List<String> (Many) A list of patterns to exclude, e.g. **/*.xml

pluginManagement

Section for management of default plugin information for use in a group of POMs.

Element Type Description
plugins/plugin* List<Plugin> (Many) The list of plugins to use.

plugin

No description.

Element Type Description
groupId String The group ID of the plugin in the repository.
Default value is: org.apache.maven.plugins.
artifactId String The artifact ID of the plugin in the repository.
version String The version (or valid range of verisons) of the plugin to be used.
extensions boolean Whether to load Maven extensions (such as packaging and type handlers) from this plugin. For performance reasons, this should only be enabled when necessary.
Default value is: false.
executions/execution* List<PluginExecution> (Many) Multiple specifications of a set of goals to execute during the build lifecycle, each having (possibly) different configuration.
dependencies/dependency* List<Dependency> (Many) Additional dependencies that this project needs to introduce to the plugin's classloader.
goals DOM Deprecated. Unused by Maven.
inherited String Whether any configuration should be propagated to child POMs.
configuration DOM No description.

execution

No description.

Element Type Description
id String The identifier of this execution for labelling the goals during the build, and for matching exections to merge during inheritance.
Default value is: default.
phase String The build lifecycle phase to bind the goals in this execution to. If omitted, the goals will be bound to the default specified in their metadata.
goals/goal* List<String> (Many) The goals to execute with the given configuration.
inherited String Whether any configuration should be propagated to child POMs.
configuration DOM No description.

dependency

No description.

Element Type Description
groupId String The project group that produced the dependency, e.g. org.apache.maven.
artifactId String The unique id for an artifact produced by the project group, e.g. maven-artifact.
version String The version of the dependency, e.g. 3.2.1. In Maven 2, this can also be specified as a range of versions.
type String The type of dependency. This defaults to jar. While it usually represents the extension on the filename of the dependency, that is not always the case. A type can be mapped to a different extension and a classifier. The type often correspongs to the packaging used, though this is also not always the case. Some examples are jar, war, ejb-client and test-jar. New types can be defined by plugins that set extensions to true, so this is not a complete list.
Default value is: jar.
classifier String The classifier of the dependency. This allows distinguishing two artifacts that belong to the same POM but were built differently, and is appended to the filename after the version. For example, jdk14 and jdk15.
scope String The scope of the dependency - compile, runtime, test, system, and provided. Used to calculate the various classpaths used for compilation, testing, and so on. It also assists in determining which artifacts to include in a distribution of this project. For more information, see the dependency mechanism.
systemPath String FOR SYSTEM SCOPE ONLY. Note that use of this property is discouraged and may be replaced in later versions. This specifies the path on the filesystem for this dependency. Requires an absolute path for the value, not relative. Use a property that gives the machine specific absolute path, e.g. ${java.home}.
exclusions/exclusion* List<Exclusion> (Many) Lists a set of artifacts that should be excluded from this dependency's artifact list when it comes to calculating transitive dependencies.
optional boolean Indicates the dependency is optional for use of this library. While the version of the dependency will be taken into account for dependency calculation if the library is used elsewhere, it will not be passed on transitively.
Default value is: false.

exclusion

No description.

Element Type Description
artifactId String The artifact ID of the project to exclude.
groupId String The group ID of the project to exclude.

profile

Modifications to the build process which is activated based on environmental parameters or command line arguments.

Element Type Description
id String The identifier of this build profile. This used both for command line activation, and identifies identical profiles to merge with during inheritance.
Default value is: default.
activation Activation The conditional logic which will automatically trigger the inclusion of this profile.
build BuildBase Information required to build the project.
modules/module* List<String> (Many) The modules (sometimes called subprojects) to build as a part of this project. Each module listed is a relative path to the directory containing the module.
repositories/repository* List<Repository> (Many) The lists of the remote repositories for discovering dependencies and extensions.
pluginRepositories/pluginRepository* List<Repository> (Many) The lists of the remote repositories for discovering plugins for builds and reports.
dependencies/dependency* List<Dependency> (Many) This element describes all of the dependencies associated with a project. These dependencies are used to construct a classpath for your project during the build process. They are automatically downloaded from the repositories defined in this project. See the dependency mechanism for more information.
reports DOM Deprecated. Now ignored by Maven.
reporting Reporting This element includes the specification of report plugins to use to generate the reports on the Maven-generated site. These reports will be run when a user executes mvn site. All of the reports will be included in the navigation bar for browsing.
dependencyManagement DependencyManagement Default dependency information for projects that inherit from this one. The dependencies in this section are not immediately resolved. Instead, when a POM derived from this one declares a dependency described by a matching groupId and artifactId, the version and other values from this section are used for that dependency if they were not already specified.
distributionManagement DistributionManagement Distribution information for a project that enables deployment of the site and artifacts to remote web servers and repositories respectively.
properties/key=value* Properties (Many) Properties that can be used throughout the POM as a substitution, and are used as filters in resources if enabled. The format is <name>value</name>.

activation

The conditions within the build runtime environment which will trigger the automatic inclusion of the build profile.

Element Type Description
activeByDefault boolean Flag specifying whether this profile is active by default.
Default value is: false.
jdk String Specifies that this profile will be activated when a matching JDK is detected. For example, 1.4 only activates on JDKs versioned 1.4, while !1.4 matches any JDK that is not version 1.4.
os ActivationOS Specifies that this profile will be activated when matching operating system attributes are detected.
property ActivationProperty Specifies that this profile will be activated when this system property is specified.
file ActivationFile Specifies that this profile will be activated based on existence of a file.
custom ActivationCustom Describes a custom profile activation trigger, brought in via build extension.

os

This is an activator which will detect an operating system's attributes in order to activate its profile.

Element Type Description
name String The name of the operating system to be used to activate the profile. This must be an exact match of the ${os.name} Java property, such as Windows XP.
family String The general family of the OS to be used to activate the profile, such as windows or unix.
arch String The architecture of the operating system to be used to activate the profile.
version String The version of the operating system to be used to activate the profile.

property

This is the property specification used to activate a profile. If the value field is empty, then the existence of the named property will activate the profile, otherwise it does a case-sensitive match against the property value as well.

Element Type Description
name String The name of the property to be used to activate a profile.
value String The value of the property required to activate a profile.

file

This is the file specification used to activate the profile. The missing value will be the location of a file that needs to exist, and if it doesn't the profile will be activated. On the other hand exists will test for the existence of the file and if it is there the profile will be activated.

Element Type Description
missing String The name of the file that must be missing to activate the profile.
exists String The name of the file that must exist to activate the profile.

custom

This activation allows users to specify their own custom trigger for a profile.

Element Type Description
configuration DOM The specification for triggering the profile according to the rules of the custom activation type.
type String The type (role-hint) of activation which is to be used to activate the profile.

build

No description.

Element Type Description
defaultGoal String The default goal (or phase in Maven 2) to execute when none is specified for the project.
resources/resource* List<Resource> (Many) This element describes all of the classpath resources such as properties files associated with a project. These resources are often included in the final package.
testResources/testResource* List<Resource> (Many) This element describes all of the classpath resources such as properties files associated with a project's unit tests.
directory String The directory where all files generated by the build are placed.
finalName String The filename (excluding the extension, and with no path information) that the produced artifact will be called. The default value is ${artifactId}-${version}.
filters/filter* List<String> (Many) The list of filter properties files that are used when filtering is enabled.
pluginManagement PluginManagement Default plugin information to be made available for reference by projects derived from this one. This plugin configuration will not be resolved or bound to the lifecycle unless referenced. Any local configuration for a given plugin will override the plugin's entire definition here.
plugins/plugin* List<Plugin> (Many) The list of plugins to use.

repository

A repository contains the information needed for establishing connections with remote repository.

Element Type Description
releases RepositoryPolicy How to handle downloading of releases from this repository.
snapshots RepositoryPolicy How to handle downloading of snapshots from this repository.
id String A unique identifier for a repository. This is used to match the repository to configuration in the settings.xml file, for example.
name String Human readable name of the repository.
url String The url of the repository, in the form protocol://hostname/path.
layout String The type of layout this repository uses for locating and storing artifacts - can be legacy or default.
Default value is: default.

releases

Download policy.

Element Type Description
enabled boolean Whether to use this repository for downloading this type of artifact.
Default value is: true.
updatePolicy String The frequency for downloading updates - can be always, daily (default), interval:XXX (in minutes) or never (only if it doesn't exist locally).
checksumPolicy String What to do when verification of an artifact checksum fails. Valid values are ignore , fail or warn (the default).

snapshots

Download policy.

Element Type Description
enabled boolean Whether to use this repository for downloading this type of artifact.
Default value is: true.
updatePolicy String The frequency for downloading updates - can be always, daily (default), interval:XXX (in minutes) or never (only if it doesn't exist locally).
checksumPolicy String What to do when verification of an artifact checksum fails. Valid values are ignore , fail or warn (the default).

pluginRepository

A repository contains the information needed for establishing connections with remote repository.

Element Type Description
releases RepositoryPolicy How to handle downloading of releases from this repository.
snapshots RepositoryPolicy How to handle downloading of snapshots from this repository.
id String A unique identifier for a repository. This is used to match the repository to configuration in the settings.xml file, for example.
name String Human readable name of the repository.
url String The url of the repository, in the form protocol://hostname/path.
layout String The type of layout this repository uses for locating and storing artifacts - can be legacy or default.
Default value is: default.

reporting

Section for management of reports and their configuration.

Element Type Description
excludeDefaults boolean If true, then the default reports are not included in the site generation. This includes the reports in the "Project Info" menu.
Default value is: false.
outputDirectory String Where to store all of the generated reports. The default is ${project.build.directory}/site .
plugins/plugin* List<ReportPlugin> (Many) The reporting plugins to use and their configuration.

plugin

No description.

Element Type Description
groupId String The group ID of the reporting plugin in the repository.
Default value is: org.apache.maven.plugins.
artifactId String The artifact ID of the reporting plugin in the repository.
version String The version of the reporting plugin to be used.
inherited String Whether the configuration in this plugin should be made available to projects that inherit from this one.
configuration DOM The configuration of the reporting plugin.
reportSets/reportSet* List<ReportSet> (Many) Multiple specifications of a set of reports, each having (possibly) different configuration. This is the reporting parallel to an execution in the build.

reportSet

Represents a set of reports and configuration to be used to generate them.

Element Type Description
id String The unique id for this report set, to be used during POM inheritance.
Default value is: default.
configuration DOM Configuration of the report to be used when generating this set.
inherited String Whether any configuration should be propagated to child POMs.
reports/report* List<String> (Many) The list of reports from this plugin which should be generated from this set.

dependencyManagement

Section for management of default dependency information for use in a group of POMs.

Element Type Description
dependencies/dependency* List<Dependency> (Many) The dependencies specified here are not used until they are referenced in a POM within the group. This allows the specification of a "standard" version for a particular dependency.

distributionManagement

This elements describes all that pertains to distribution for a project. It is primarily used for deployment of artifacts and the site produced by the build.

Element Type Description
repository DeploymentRepository Information needed to deploy the artifacts generated by the project to a remote repository.
snapshotRepository DeploymentRepository Where to deploy snapshots of artifacts to. If not given, it defaults to the repository element.
site Site Information needed for deploying the web site of the project.
downloadUrl String The URL of the project's download page. If not given users will be referred to the homepage given by url. This is given to assist in locating artifacts that are not in the repository due to licensing restrictions.
relocation Relocation Relocation information of the artifact if it has been moved to a new group ID and/or artifact ID.
status String Gives the status of this artifact in the remote repository. This must not be set in your local project, as it is updated by tools placing it in the reposiory. Valid values are: none (default), converted (repository manager converted this from an Maven 1 POM), partner (directly synced from a partner Maven 2 repository), deployed (was deployed from a Maven 2 instance), verified (has been hand verified as correct and final).

repository

Repository contains the information needed for deploying to the remote repository.

Element Type Description
uniqueVersion boolean Whether to assign snapshots a unique version comprised of the timestamp and build number, or to use the same version each time
Default value is: true.
id String A unique identifier for a repository. This is used to match the repository to configuration in the settings.xml file, for example.
name String Human readable name of the repository.
url String The url of the repository, in the form protocol://hostname/path.
layout String The type of layout this repository uses for locating and storing artifacts - can be legacy or default.
Default value is: default.

snapshotRepository

Repository contains the information needed for deploying to the remote repository.

Element Type Description
uniqueVersion boolean Whether to assign snapshots a unique version comprised of the timestamp and build number, or to use the same version each time
Default value is: true.
id String A unique identifier for a repository. This is used to match the repository to configuration in the settings.xml file, for example.
name String Human readable name of the repository.
url String The url of the repository, in the form protocol://hostname/path.
layout String The type of layout this repository uses for locating and storing artifacts - can be legacy or default.
Default value is: default.

site

Contains the information needed for deploying websites.

Element Type Description
id String A unique identifier for a deployment location. This is used to match the site to configuration in the settings.xml file, for example.
name String Human readable name of the deployment location.
url String The url of the location where website is deployed, in the form protocol://hostname/path.

relocation

Describes where an artifact has moved to. If any of the values are omitted, it is assumed to be the same as it was before.

Element Type Description
groupId String The group ID the artifact has moved to.
artifactId String The new artifact ID of the artifact.
version String The new version of the artifact.
message String An additional message to show the user about the move, such as the reason.