Plugin org.apache.maven.plugins:maven-clean-plugin:2.4.1 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-clean-plugin:jar:2.4.1: Could not transfer artifact org.apache.maven.plugins:maven-clean-plugin:pom:2.4.1 from/to central (http://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:80 [repo.maven.apache.org/151.101.40.215] failed: Connection timed out: connect -> [Help 1]
原文：https://www.cnblogs.com/jnhs/p/11826277.html