生成配置文件失败，显示Failure to find org.eclipse.m2e:lifecycle-mapping:pom:1.0.0 in http://maven.aliyun.com/nexus/content/groups/public/

Failure to find org.eclipse.m2e:lifecycle-mapping:pom:1.0.0 in http://maven.aliyun.com/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of alimaven has elapsed or updates are forced

是什么原因啊