1、下载

https://dlcdn.apache.org/maven/maven-3/3.8.4/binaries/apache-maven-3.8.4-bin.zip

2、解压

3、配置环境变量

M2_HOME F:\apache-maven-3.8.4\bin

MAVEN_HOME F:\apache-maven-3.8.4

Path %MAVEN_HOME%\bin

4、配置阿里云镜像

修改 F:\apache-maven-3.8.4\conf\settings.xml

引用：
https://www.cnblogs.com/shan333/p/15291213.html

 <mirror>
        <id>nexus-aliyun</id>
        <mirrorOf>*,!jeecg,!jeecg-snapshots</mirrorOf>
        <name>Nexus aliyun</name>
        <url>http://maven.aliyun.com/nexus/content/groups/public</url>
  </mirror>

5、本地仓库

修改 F:\apache-maven-3.8.4\conf\settings.xml

<localRepository>F:\apache-maven-3.8.4\maven-repo</localRepository>

6、寻找需要的jar添加到本地仓库中

访问阿里云仓库

https://developer.aliyun.com/mvn/search

搜索需要的jar 复制文件 粘贴在pom.xml中。

eg:
<dependency>
      <groupId>com.github.jiangxincode</groupId>
      <artifactId>cpdetector</artifactId>
      <version>1.0.10</version>
    </dependency>
    <dependency>
      <groupId>ant</groupId>
      <artifactId>ant-antlr</artifactId>
      <version>1.6.1</version>
    </dependency>
    <dependency>
      <groupId>clj-chardet</groupId>
      <artifactId>clj-chardet</artifactId>
      <version>0.2</version>
      <type>pom</type>
    </dependency>