maven工程运行报错不知道是哪里错误

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]

maven的依赖没有下载完

看下是否正确添加阿里云仓库
添加方法 - 在maven配置阿里云仓库的setting.xml 文件，标签里加入:

  <mirror>
            <id>alimaven</id>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <mirrorOf>central</mirrorOf>
        </mirror>