常用maven mirror

<mirror>
      <id>repo2</id>
      <mirrorOf>central</mirrorOf>
      <name>Human Readable Name for this Mirror.</name>
      <url>http://repo2.maven.org/maven2/</url>
    </mirror>
<mirror>
      <id>net-cn</id>
      <mirrorOf>central</mirrorOf>
      <name>Human Readable Name for this Mirror.</name>
      <url>http://maven.net.cn/content/groups/public/</url> 
    </mirror>
<mirror>
      <id>ui</id>
      <mirrorOf>central</mirrorOf>
      <name>Human Readable Name for this Mirror.</name>
     <url>http://uk.maven.org/maven2/</url>
    </mirror>
<mirror>
      <id>ibiblio</id>
      <mirrorOf>central</mirrorOf>
      <name>Human Readable Name for this Mirror.</name>
     <url>http://mirrors.ibiblio.org/pub/mirrors/maven2/</url>
    </mirror>
<mirror>
      <id>jboss-public-repository-group</id>
      <mirrorOf>central</mirrorOf>
      <name>JBoss Public Repository Group</name>
      <url>http://repository.jboss.org/nexus/content/groups/public</url>
    </mirror>

<mirror>  
     <id> maven-net-cn</id>  
     <name> Maven China Mirror</name>  
     <url>http://mvnrepository.com/</url>  
     <mirrorOf>central</mirrorOf>  
</mirror>