https://maven.apache.org/download.cgi
After the download is complete, you need to extract the apache-maven-3.3.9-bin.zip, modify D: \ java \ apache-maven-3.3.9 \ conf \ settings.xml
Local repository path, Ali cloud PW.
<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> 
