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Maven配置阿里镜像出错信息 No plugin found for prefix ‘help‘ in the current project and in the plugin groups

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今天在重新安装MAVEN时想试试本地仓库有没有生效，执行：mvn help:system 出错

错误截图

网上搜索了一大堆解决方案，都是说镜像错误，尝试修改镜像。

镜像一：

<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>
 
  <mirror>
    <id>uk</id>  
    <mirrorOf>central</mirrorOf>  
    <name>Human Readable Name for this Mirror.</name>  
    <url>http://uk.maven.org/maven2/</url>
  </mirror>
 
   <mirror>
    <id>CN</id>
    <name>OSChina Central</name>
    <url>http://maven.oschina.net/content/groups/public/</url>
    <mirrorOf>central</mirrorOf>
  </mirror>
 
  <mirror>
    <id>nexus</id>
    <name>internal nexus repository</name>
    <!-- <url>http://192.168.1.100:8081/nexus/content/groups/public/</url>-->
    <url>http://repo.maven.apache.org/maven2</url>
    <mirrorOf>central</mirrorOf>
  </mirror>
  </mirrors>

依然报错

镜像二：根据阿里云maven官网来配置镜像 官网：https://maven.aliyun.com/mvn/guide

<mirror>
  <id>aliyunmaven</id>
  <mirrorOf>*</mirrorOf>
  <name>阿里云公共仓库</name>
  <url>https://maven.aliyun.com/repository/public</url>
</mirror>

依然不好用

镜像三：据说原因是在联通网络下，无法访问maven.org网站，而我刚好是联通网，尝试如下镜像

<mirror>
           <id>ibiblio.org</id>
           <name>ibiblio Mirror of http://repo1.maven.org/maven2/</name>
           <url>http://mirrors.ibiblio.org/pub/mirrors/maven2</url>
           <mirrorOf>central</mirrorOf>
           <!-- United States, North Carolina -->
     </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> 

依然不好用，切回电信网络后尝试了下面的镜像，

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

成功了！！！

但是 却发现 相应的jar包不在我配置的本地仓库“D:\apache-maven-repository”里 而是在它自动生成的“D:\server\maven\repository” 路径下有没有大佬知道是怎么回事，我的maven版本是3.8.1

本地仓库配置

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