https://sonatype-download.global.ssl.fastly.net/repository/repositoryManager/3/nexus-3.14.0-04-unix.tar.gz
http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.0/binaries/apache-maven-3.6.0-bin.tar.gz
http://www.cnblogs.com/zishengY/p/7794923.html
访问办法：
http://10.10.14.200:8081/
自带Jetty，启动较慢，耐心等待。