yum install maven

mvn -v

/usr/share/maven

vi /usr/share/maven/conf/settings.xml

<mirror>
        <id>nexus-aliyun</id>
        <mirrorOf>central</mirrorOf>
        <name>Nexus aliyun</name>
        <url>http://maven.aliyun.com/nexus/content/groups/public</url>
    </mirror>
    <mirror>        
      <id> maven-net-cn</id>        
      <name> Maven China Mirror</name>        
      <url>http://maven.net.cn/content/groups/public/</url>        
      <mirrorOf>central</mirrorOf>        
    </mirror>