进入：​​D:\soft\apache-maven-3.5.4\conf\setting.xml​​​在​​<mirrors>​​标签中

<mirror>
      <id>alimaven</id>
      <name>aliyun maven</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
      <mirrorOf>central</mirrorOf>       
    </mirror>
  </mirrors>