maven的卸载与安装实现方式

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

  <!-- <localRepository>/Users/Fred/Downloads/apache-maven-3.5.4/repository</localRepository> -->
  <localRepository>D:\Program Files\maven\myRepository</localRepository>

  <pluginGroups>   
  </pluginGroups>

  <proxies>   
  </proxies>

  <servers>   
  </servers>

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

    <!-- 中央仓库在中国的镜像 -->
    <mirror>
      <id>maven.net.cn</id>
      <name>one of the central mirrors in china</name>
      <url>http://maven.net.cn/content/groups/public/</url>
      <mirrorOf>central</mirrorOf>
    </mirror>
    <!-- 中央仓库1 -->
    <mirror>
        <id>repo1</id>
        <mirrorOf>central</mirrorOf>
        <name>Human Readable Name for this Mirror.</name>
        <url>https://repo1.maven.org/maven2/</url>
    </mirror>

  </mirrors>

  <profiles>
    <profile>  
         <id>jdk-1.8</id>  
         <activation>  
             <activeByDefault>true</activeByDefault>  
             <jdk>1.8</jdk>  
          </activation>  
          <properties>  
              <maven.compiler.source>1.8</maven.compiler.source>  
              <maven.compiler.target>1.8</maven.compiler.target>  
              <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>  
          </properties>  
    </profile>
  </profiles>
  <activeProfiles>
    <activeProfile>jdk-1.8</activeProfile>
  </activeProfiles>
</settings>