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安装目录conf--修改settting.xml文件
在mirrors标签下添加子节点

 <mirrors>
    <!-- mirror
     | Specifies a repository mirror site to use instead of a given repository. The repository that
     | this mirror serves has an ID that matches the mirrorOf element of this mirror. IDs are used
     | for inheritance and direct lookup purposes, and must be unique across the set of mirrors.
     |
    <mirror>
      <id>mirrorId</id>
      <mirrorOf>repositoryId</mirrorOf>
      <name>Human Readable Name for this Mirror.</name>
      <url>http://my.repository.com/repo/path</url>
    </mirror>
     -->
     <mirror>  
         <id>alimaven</id>  
         <name>aliyun maven</name>  
         <url>http://maven.aliyun.com/nexus/content/groups/public/</url>  
         <mirrorOf>central</mirrorOf>        
     </mirror>

  </mirrors>