Settings

This is a reference for the user-specific configuration for Maven.

Includes things that should not be distributed with the pom.xml file, such as developer identity, along with local settings, like proxy information.

The default location for the settings file is ~/.m2/settings.xml

An XSD is available at:

http://maven.apache.org/xsd/settings-1.0.0.xsd.

<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
  <localRepository/>
  <interactiveMode/>
  <usePluginRegistry/>
  <offline/>

  <proxies>
    <proxy>
      <active/>
      <protocol/>
      <username/>
      <password/>
      <port/>
      <host/>
      <nonProxyHosts/>
      <id/>
    </proxy>
  </proxies>

  <servers>
    <server>
      <username/>
      <password/>
      <privateKey/>
      <passphrase/>
      <filePermissions/>
      <directoryPermissions/>
      <configuration/>
      <id/>
    </server>
  </servers>

  <mirrors>
    <mirror>
      <mirrorOf/>
      <name/>
      <url/>
      <layout/>
      <mirrorOfLayouts/>
      <id/>
    </mirror>
  </mirrors>

  <profiles>
    <profile>
      <activation>
        <activeByDefault/>
        <jdk/>
        <os>
          <name/>
          <family/>
          <arch/>
          <version/>
        </os>
        <property>
          <name/>
          <value/>
        </property>
        <file>
          <missing/>
          <exists/>
        </file>
      </activation>
      <properties>
        <key>value</key>
      <properties/>

      <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>
      <id/>
    </profile>
  </profiles>

  <activeProfiles/>
  <pluginGroups/>
</settings>

settings

Root element of the user configuration file.

Element	Type	Description
`localRepository`	`String`	The local repository. Default value is: `${user.home}/.m2/repository`
`interactiveMode`	`boolean`	Whether Maven should attempt to interact with the user for input. Default value is: `true`.
`usePluginRegistry`	`boolean`	Whether Maven should use the plugin-registry.xml file to manage plugin versions. Default value is: `false`.
`offline`	`boolean`	Indicate whether maven should operate in offline mode full-time. Default value is: `false`.
`proxies/proxy*`	`List<Proxy>`	(Many) Configuration for different proxy profiles. Multiple proxy profiles might come in handy for anyone working from a notebook or other mobile platform, to enable easy switching of entire proxy configurations by simply specifying the profile id, again either from the command line or from the defaults section below.
`servers/server*`	`List<Server>`	(Many) Configuration of server-specific settings, mainly authentication method. This allows configuration of authentication on a per-server basis.
`mirrors/mirror*`	`List<Mirror>`	(Many) Configuration of download mirrors for repositories.
`profiles/profile*`	`List<Profile>`	(Many) Configuration of build profiles for adjusting the build according to environmental parameters.
`activeProfiles/activeProfile*`	`List<String>`	(Many) List of manually-activated build profiles, specified in the order in which they should be applied.
`pluginGroups/pluginGroup*`	`List<String>`	(Many) List of groupIds to search for a plugin when that plugin groupId is not explicitly provided.

proxy

The <proxy> element contains informations required to a proxy settings.

Element	Type	Description
`active`	`boolean`	Whether this proxy configuration is the active one. Default value is: `true`.
`protocol`	`String`	The proxy protocol. Default value is: `http`.
`username`	`String`	The proxy user.
`password`	`String`	The proxy password.
`port`	`int`	The proxy port. Default value is: `8080`.
`host`	`String`	The proxy host.
`nonProxyHosts`	`String`	The list of non-proxied hosts (delimited by \|).
`id`	`String`	No description. Default value is: `default`.

server

The <server> element contains informations required to a server settings.

Element	Type	Description
`username`	`String`	The username used to authenticate.
`password`	`String`	The password used in conjunction with the username to authenticate.
`privateKey`	`String`	The private key location used to authenticate.
`passphrase`	`String`	The passphrase used in conjunction with the privateKey to authenticate.
`filePermissions`	`String`	The permissions for files when they are created.
`directoryPermissions`	`String`	The permissions for directories when they are created.
`configuration`	`DOM`	Extra configuration for the transport layer.
`id`	`String`	No description. Default value is: `default`.

mirror

A download mirror for a given repository.

Element	Type	Description
`mirrorOf`	`String`	The server ID of the repository being mirrored, eg "central". This MUST NOT match the mirror id.
`name`	`String`	The optional name that describes the mirror.
`url`	`String`	The URL of the mirror repository.
`layout`	`String`	The layout of the mirror repository. Since Maven 3.
`mirrorOfLayouts`	`String`	The layouts of repositories being mirrored. This value can be used to restrict the usage of the mirror to repositories with a matching layout (apart from a matching id). Since Maven 3. Default value is: `default,legacy`.
`id`	`String`	No description. Default value is: `default`.

profile

Modifications to the build process which is keyed on some sort of environmental parameter.

Element	Type	Description
`activation`	`Activation`	The conditional logic which will automatically trigger the inclusion of this profile.
`properties/key=value*`	`Properties`	(Many) Extended configuration specific to this profile goes here. Contents take the form of property.value
`repositories/repository*`	`List<Repository>`	(Many) The lists of the remote repositories.
`pluginRepositories/pluginRepository*`	`List<Repository>`	(Many) The lists of the remote repositories for discovering plugins.
`id`	`String`	No description. Default value is: `default`.

activation

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

Element	Type	Description
`activeByDefault`	`boolean`	Flag specifying whether this profile is active as a default. Default value is: `false`.
`jdk`	`String`	Specifies that this profile will be activated when a matching JDK is detected.
`os`	`ActivationOS`	Specifies that this profile will be activated when matching OS 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.

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 OS to be used to activate a profile.
`family`	`String`	The general family of the OS to be used to activate a profile (e.g. 'windows')
`arch`	`String`	The architecture of the OS to be used to activate a profile.
`version`	`String`	The version of the OS to be used to activate a 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 to be used to activate a profile.

file

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

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

repository

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.
`name`	`String`	Human readable name of the repository.
`url`	`String`	The url of the repository.
`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 - warn, fail, etc. Valid values are "fail" or "warn".

snapshots