通过npm进行搭建vue时报如下错误：
C:\Users\Administrator>npm i vue-cli -g
npm WARN deprecated [email protected]: This package has been deprecated in favour of @vue/cli
npm WARN deprecated [email protected]: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
C:\Users\Administrator\AppData\Roaming\npm\vue-init -> C:\Users\Administrator\AppData\Roaming\npm\node_modules\vue-cli\bin\vue-init
C:\Users\Administrator\AppData\Roaming\npm\vue-list -> C:\Users\Administrator\AppData\Roaming\npm\node_modules\vue-cli\bin\vue-list
npm ERR! code EEXIST
npm ERR! path C:\Users\Administrator\AppData\Roaming\npm\node_modules\vue-cli\bin\vue
npm ERR! dest C:\Users\Administrator\AppData\Roaming\npm\vue
npm ERR! EEXIST: file already exists, cmd shim 'C:\Users\Administrator\AppData\Roaming\npm\node_modules\vue-cli\bin\vue' -> 'C:\Users\Administrator\AppData\Roaming\npm\vue'
npm ERR! File exists: C:\Users\Administrator\AppData\Roaming\npm\vue
npm ERR! Remove the existing file and try again, or run npm
npm ERR! with --force to overwrite files recklessly.
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2020-04-02T04_47_14_561Z-debug.log
解决办法
（Remove the existing file and try again, or run npm），删除现有的文件并且重试
直接前往 C:\Users\Administrator\AppData\Roaming\npm\vue找到这个vue文件然后删除，在重新全局安装，就可以了