一、下载 MAVEN

https://maven.apache.org/

# 二、IDEA 中使用本地 MAVEN 仓库

三、找 MAVEN 仓库的网址

https://mvnrepository.com/

四、MAVEN 的 setting.xml 文件的配置

<?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>D:\devZgq\Java\.m2\repository</localRepository>

  <!-- 阿里云的中央仓库 -->
  <mirrors>  
    <mirror>
      <id>aliyun</id>
      <name>aliyun</name>
      <mirrorOf>central</mirrorOf> 
      <url>https://maven.aliyun.com/repository/public</url>
    </mirror> 
  </mirrors> 


  <!-- 配置 jdk 版本 -->
  <profiles> 
 
    <profile>
      <id>jdk8</id>
      <activation>
        <activeByDefault>true</activeByDefault>
        <jdk>8</jdk>
      </activation>
      <properties>
        <maven.compiler.source>8</maven.compiler.source>
         <maven.compiler.target>8</maven.compiler.target>
          <maven.compiler.compilerVersion>8</maven.compiler.compilerVersion>
      </properties>
    </profile>  

  </profiles>

</settings>