<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>  
     -->  
      
  </mirrors>  

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