1、setting.xml 配置

<?xml version="1.0" encoding="UTF-8"?>

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
    <localRepository>D:\program\maven\repository</localRepository>

    <pluginGroups>
    </pluginGroups>

    <proxies>
        <proxy>
          <id>optional</id>
          <active>true</active>
          <protocol>http</protocol>
          <username>uesername</username>
          <password>password</password>
          <host>代理服务器IP</host>
          <port>端口</port>
          <nonProxyHosts>localhost|127.0.0.1</nonProxyHosts>
        </proxy>

    </proxies>

    <servers>
    </servers>

    <mirrors>
        <mirror>
            <id>aliyun</id>
            <!-- 如果值为*，pom中配置repository会失效 -->
            <mirrorOf>central</mirrorOf>
            <name>aliyun</name>
            <url>https://maven.aliyun.com/repository/public</url>
        </mirror>
    </mirrors>

    <profiles>
        <profile>
            <id>aliyun</id>
            <repositories>
                <repository>
                    <id>aliyun</id>
                    <url>https://maven.aliyun.com/repository/public</url>
                    <releases>
                        <enabled>true</enabled>
                    </releases>
                    <snapshots>
                        <enabled>false</enabled>
                    </snapshots>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <id>aliyun</id>
                    <url>https://maven.aliyun.com/repository/public</url>
                    <releases>
                        <enabled>true</enabled>
                    </releases>
                    <snapshots>
                        <enabled>false</enabled>
                    </snapshots>
                </pluginRepository>               
            </pluginRepositories>
        </profile>
    </profiles>

    <activeProfiles>
        <activeProfile>aliyun</activeProfile>
    </activeProfiles>


</settings>

2、私有仓库配置：

<?xml version="1.0" encoding="UTF-8"?>

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

    <!--本地仓库位置-->
    <localRepository>F:\MyProject\maven\repository</localRepository>

    <pluginGroups>
    </pluginGroups>

    <proxies>
    </proxies>

    <!--设置 Nexus 认证信息以发布到私服-->
    <servers>
        <server>
            <id>nexus-releases</id>
            <username>admin</username>
            <password>admin123</password>
        </server>
      <server>  
          <id>nexus-snapshots</id>  
          <username>admin</username>  
          <password>admin123</password>  
      </server>  
    </servers>

    <!--设置 Nexus 镜像，后面只要本地没对应，则到 Nexus 去找-->
    <mirrors>
        <mirror>
            <id>nexus-releases</id>
            <mirrorOf>*</mirrorOf>
            <url>http://IP:8081/nexus/content/groups/public/</url>
        </mirror>
    </mirrors>

    <profiles>
        <profile>
            <id>nexus</id>
            <repositories>
                <repository>
                    <id>nexus-releases</id>
                    <url>http://IP:8081/nexus/content/repositories/releases/</url>
                    <releases>
                        <enabled>true</enabled>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                    </snapshots>
                </repository>
            </repositories>
            <pluginRepositories>
                <pluginRepository>
                    <id>nexus-releases</id>
                    <url>http://IP:8081/nexus/content/repositories/releases/</url>
                    <releases>
                        <enabled>true</enabled>
                    </releases>
                    <snapshots>
                        <enabled>true</enabled>
                    </snapshots>
                </pluginRepository>               
            </pluginRepositories>
        </profile>
    </profiles>

    <activeProfiles>
        <activeProfile>nexus</activeProfile>
    </activeProfiles>

</settings>

3、在pom文件中指定仓库优先于setting.xml

<repository>
            <id>spring</id>
            <url>https://maven.aliyun.com/repository/spring</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>