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.

<settings xmlns="http://maven.apache.org/SETTINGS/2.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/2.0.0 http://maven.apache.org/xsd/settings-2.0.0.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/>
      <blocked/>
      <id/>
    </mirror>
  </mirrors>

  <repositories>
    <repository>
      <releases>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </releases>
      <snapshots>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </snapshots>
      <name/>
      <url/>
      <layout/>
      <id/>
    </repository>
  </repositories>
  <pluginRepositories>
    <pluginRepository>
      <releases>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </releases>
      <snapshots>
        <enabled/>
        <updatePolicy/>
        <checksumPolicy/>
      </snapshots>
      <name/>
      <url/>
      <layout/>
      <id/>
    </pluginRepository>
  </pluginRepositories>

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

      <repositories>
        <repository>
          <releases>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </releases>
          <snapshots>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </snapshots>
          <name/>
          <url/>
          <layout/>
          <id/>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <releases>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </releases>
          <snapshots>
            <enabled/>
            <updatePolicy/>
            <checksumPolicy/>
          </snapshots>
          <name/>
          <url/>
          <layout/>
          <id/>
        </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: true
usePluginRegistry boolean Whether Maven should use the plugin-registry.xml file to manage plugin versions.

Default value: false
offline boolean Indicate whether maven should operate in offline mode full-time.

Default value: 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.
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.
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 element contains information required to a proxy settings.

Element Type Description
active String Whether this proxy configuration is the active one. Note: While the type of this field is String for technical reasons, the semantic type is actually boolean.

Default value: true
protocol String The proxy protocol.

Default value: http
username String The proxy user.
password String The proxy password.
port String The proxy port. Note: While the type of this field is String for technical reasons, the semantic type is actually int.

Default value: 8080
host String The proxy host.
nonProxyHosts String The list of non-proxied hosts (delimited by |).
id String Item identifier.

Default value: default

server

The element contains information 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 Item identifier.

Default value: default

mirror

A download mirror for a given repository.

Element Type Description
mirrorOf String A repository id or (since Maven 2.0.9) an expression matching one or many repository ids to mirror, e.g., central or *,!repo1. * (since Maven 2.0.5), external:* (since Maven 2.0.9) and external:http:* (since Maven 3.8.0) have a special meaning: see Mirror Settings guide.
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.

Default value: default
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: default,legacy
blocked boolean Whether this mirror should be blocked from any download request but fail the download process, explaining why.
Default value is: false
Since: Maven 3.8.0

Default value: false
id String Item identifier.

Default value: default

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
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: default
id String Item identifier.

Default value: default

releases

Download policy

Element Type Description
enabled boolean Whether to use this repository for downloading this type of artifact.

Default value: 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 "fail" (default for Maven 4 and above), "warn" (default for Maven 2 and 3) or "ignore".

snapshots

Download policy

Element Type Description
enabled boolean Whether to use this repository for downloading this type of artifact.

Default value: 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 "fail" (default for Maven 4 and above), "warn" (default for Maven 2 and 3) or "ignore".

pluginRepository

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
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: default
id String Item identifier.

Default value: 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 Item identifier.

Default value: 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: 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 property is specified.
file ActivationFile Specifies that this profile will be activated based on existence of a file.
packaging String Specifies that this profile will be activated based on the project's packaging.

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 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.