Centos yum安装软件报软件包下载失败

运行yum -y install java 时报 设置安装进程 Loading mirror speeds from cached hostfile file:///media/dvdrom/repodata/repomd.xml: [Errno 14] Could not open/read file:///media/dvdrom/repodata/repomd.xml 尝试其余镜像 …… 下

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