Maven user settings.

settings.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.2.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.2.0 https://maven.apache.org/xsd/settings-1.2.0.xsd">
    <!-- localRepository
     | The path to the local repository maven will use to store artifacts.
     |
     | Default: ${user.home}/.m2/repository
    <localRepository>/path/to/local/repo</localRepository>
    -->

    <!-- interactiveMode
     | This will determine whether maven prompts you when it needs input. If set to false,
     | maven will use a sensible default value, perhaps based on some other setting, for
     | the parameter in question.
     |
     | Default: true
    <interactiveMode>true</interactiveMode>
    -->

    <!-- offline
     | Determines whether maven should attempt to connect to the network when executing a build.
     | This will have an effect on artifact downloads, artifact deployment, and others.
     |
     | Default: false
    <offline>false</offline>
    -->

    <!-- pluginGroups
     | This is a list of additional group identifiers that will be searched when resolving plugins by their prefix, i.e.
     | when invoking a command line like "mvn prefix:goal". Maven will automatically add the group identifiers
     | "org.apache.maven.plugins" and "org.codehaus.mojo" if these are not already contained in the list.
     |-->
    <pluginGroups>
        <!-- pluginGroup
         | Specifies a further group identifier to use for plugin lookup.
        <pluginGroup>com.your.plugins</pluginGroup>
        -->
    </pluginGroups>

    <proxies>
        <!-- proxy
         | Specification for one proxy, to be used in connecting to the network.
         |
        <proxy>
          <id>optional</id>
          <active>true</active>
          <protocol>http</protocol>
          <username>proxyuser</username>
          <password>proxypass</password>
          <host>proxy.host.net</host>
          <port>80</port>
          <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
        </proxy>
        -->
    </proxies>

    <servers>
    </servers>

    <mirrors>
        <mirror>
            <id>maven-default-http-blocker</id>
            <mirrorOf>external:http:*</mirrorOf>
            <name>Pseudo repository to mirror external repositories initially using HTTP.</name>
            <url>http://0.0.0.0/</url>
            <blocked>true</blocked>
        </mirror>
    </mirrors>

    <profiles>
        <profile>
          <id>repository-manager</id>

          <activation>
            <activeByDefault>true</activeByDefault>
          </activation>

          <repositories>
            <repository>
              <id>ustclug</id>
              <name>Central Mirror - USTC</name>
              <url>https://maven.proxy.ustclug.org/maven2/</url>
            </repository>
            <repository>
              <id>aliyun</id>
              <name>Aliyun Maven</name>
              <url>https://maven.aliyun.com/repository/public/</url>
            </repository>
          </repositories>
        </profile>
    </profiles>

    <activeProfiles>
      <activeProfile>repository-manager</activeProfile>
    </activeProfiles>
</settings>