<mirrors> <!-- mirror | Specifies a repository mirror site to use instead of a given repository. The repository that | this mirror serves has an ID that matches the mirrorOf element of this mirror. IDs are used | for inheritance and direct lookup purposes, and must be unique across the set of mirrors. | <mirror> <id>mirrorId</id> <mirrorOf>repositoryId</mirrorOf> <name>Human Readable Name for this Mirror.</name> <url></url> </mirror> --> <mirror> <id>nexus</id> <mirrorOf>central</mirrorOf> <name>internal nexus repository</name> <url>:8081/nexus/content/groups/public/</url>这一段配置，描述的便是 上一步中提到的那个Public Reposiories的信息，这个地址便是他的地址，这些写都可以再界面上看到 </mirror>这里的是localhost是在本机搭建测试用的,如果是公司内部的仓库的话，可自行修改成公司内网ip地址。 </mirrors>