Plugin org.apache.maven.plugins:maven-war-plugin:2.2 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-war-plugin:jar:2.2: Could not transfer artifact org.apache.maven.plugins:maven-war-plugin:pom:2.2 fromto alimaven (http:maven.aliyun.comnexuscontentgroupspublic): maven.aliyun.com: Unknown host maven.aliyun.com -> [Help 1] [ERROR]
