2.1 Maven下载安装

1. 检查JDK的环境变量（Maven是java语言开发的需要JDK的支持）

C:\Users\Administrator>echo %JAVA_HOME%
D:\devsoft\Java\jdk1.8.0_161
C:\Users\Administrator>echo %PATH%
D:\devsoft\Java\jdk1.8.0_161\bin;D:\devsoft\Java\jdk1.8.0_161\jre\bin;

2. 下载Maven https://maven.apache.org/download.cgi

3. 下载后解压到D:\devsoft\目录下（目录中最好不要出现中文和空格）。

4. 配置Maven的环境变量

   ​x
   变量名：MAVEN_HOME
   变量值：D:\devsoft\apache-maven-3.8.2
   
   变量path中添加 %MAVEN_HOME%\bin
   

5. 检查Maven是否安装正确

   xxxxxxxxxx
   C:\Users\Administrator>mvn -v
   Apache Maven 3.8.2 (ea98e05a04480131370aa0c110b8c54cf726c06f)
   Maven home: D:\devsoft\apache-maven-3.8.2
   Java version: 1.8.0_161, vendor: Oracle Corporation, runtime: D:\devsoft\Java\jdk1.8.0_161\jre
   Default locale: zh_CN, platform encoding: GBK
   OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"