IDEA Cannot access alimaven (http://maven.aliyun.com/nexus/content/groups/public/)

[ERROR] Plugin org.apache.maven.plugins:maven-compiler-plugin:3.1 or one of its dependencies could not be resolved:Cannot access alimaven (http://maven.aliyun.com/nexus/content/groups/public/) in offline mode and the artifact org.apache.maven.plugins:maven-compiler-plugin:jar:3.1 has not been downloaded from it before. -> [Help 1]

原文：http://www.cnblogs.com/alway-july/p/7722024.html