前言
npm安装失败，显示一堆ERR报错，已解决，如有错误，请纠正，万分感谢！
报错
C:\>npm install -g @vue/cli
npm ERR! code EPERM
npm ERR! syscall open
npm ERR! path C:\Program Files\nodejs\node_cache\_cacache\tmp\af6aab31
npm ERR! errno -4048
npm ERR! Error: EPERM: operation not permitted, open 'C:\Program Files\nodejs\node_cache\_cacache\tmp\af6aab31'
npm ERR! [OperationalError: EPERM: operation not permitted, open 'C:\Program Files\nodejs\node_cache\_cacache\tmp\af6aab31'] {
npm ERR! cause: [Error: EPERM: operation not permitted, open 'C:\Program Files\nodejs\node_cache\_cacache\tmp\af6aab31'] {
npm ERR! errno: -4048,
npm ERR! code: 'EPERM',
npm ERR! syscall: 'open',
npm ERR! path: 'C:\\Program Files\\nodejs\\node_cache\\_cacache\\tmp\\af6aab31'
npm ERR! },
npm ERR! isOperational: true,
npm ERR! errno: -4048,
npm ERR! code: 'EPERM',
npm ERR! syscall: 'open',
npm ERR! path: 'C:\\Program Files\\nodejs\\node_cache\\_cacache\\tmp\\af6aab31'
npm ERR! }
npm ERR!
npm ERR! The operation was rejected by your operating system.
npm ERR! It's possible that the file was already in use (by a text editor or antivirus),
npm ERR! or that you lack permissions to access it.
npm ERR!
npm ERR! If you believe this might be a permissions issue, please double-check the
npm ERR! permissions of the file and its containing directories, or try running
npm ERR! the command again as root/Administrator.
解决方法
查找了原因，原来是没有开启管理员权限。
惠普笔记本 win +X，再以管理员身份打开
在打开的窗口输入安装语句，即可成功！
