取一即可

 1     <!--阿里云镜像1-->
 2     <mirror>
 3       <id>aliyunId</id>
 4       <mirrorOf>central</mirrorOf>
 5       <name>aliyun maven</name>
 6       <url>https://maven.aliyun.com/repository/central</url>
 7     </mirror>
 8      <!--阿里云镜像2-->
 9     <mirror>
10       <id>alimaven</id>
11       <mirrorOf>central</mirrorOf>
12       <name>aliyun maven</name>
13       <url>https://maven.aliyun.com/nexus/content/groups/public/</url>
14     </mirror>
15      <!--阿里云镜像3-->
16     <mirror>
17       <id>alimaven</id>
18       <mirrorOf>central</mirrorOf>
19       <name>aliyun maven</name>
20       <url>https://maven.aliyun.com/nexus/content/repositories/central/</url>
21     </mirror>
22      <!--阿里云镜像4-->
23      <mirror>
24       <id>alimaven</id>
25       <mirrorOf>central</mirrorOf>
26       <name>aliyun maven</name>
27       <url>https://central.maven.org/maven2</url>
28     </mirror>
29     <!--maven官方镜像-->
30      <mirror>
31       <id>mirrorId</id>
32       <mirrorOf>central</mirrorOf>
33       <name>Human Readable Name</name>
34       <url>https://repol.maven.org/maven2/</url>
35     </mirror>