https://maven.apache.org/download.cgi
下载完毕后, 需要解压 apache-maven-3.3.9-bin.zip, 修改D:\java\apache-maven-3.3.9\conf\settings.xml
本地仓库路径, 阿里云私服.
<localRepository>D:\java\rep</localRepository>
<mirrors>
<mirror>
<id>nexus-aliyun</id>
<mirrorOf>*</mirrorOf>
<name>Nexus aliyun</name>
<url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>
</mirrors> 
