org.springframework.cloud:spring-cloud-starter-oauth2:jar:unknown was not found in http://maven.aliyun.com/nexus/content/groups/public during a previous attempt. This failure was cached in the local repository and resolution is not reattempted until the update interval of nexus-aliyun has elapsed or updates are forced 这个报错事因为什么

这个报错是因为在之前的尝试中，Maven无法在阿里云的公共仓库（http://maven.aliyun.com/nexus/content/groups/public）中找到org.springframework.cloud:spring-cloud-starter-oauth2的jar包。这个失败被缓存在本地仓库中，直到nexus-aliyun的更新间隔过去或强制更新才会重新尝试解析该依赖。可能的原因包括网络连接问题、仓库配置错误或该依赖的确没有被上传到该仓库。你可以尝试检查网络连接、验证仓库配置以及在其他可用的Maven仓库中查找该依赖。