mvn clean compile install -Ponline報錯Error: Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolve

mvn clean compile install -Ponline報錯，錯誤信息如下：

Error: Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or one of its dependencies could not be resolve..

解決辦法：

1 刪除本地倉庫下下載失敗的文件，例如 /root/.m2/repository/... 重新編譯。

2 換個鏡像下載，修改/usr/local/maven/apache-maven-3.5.4/conf/setting.xml文件

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