##查询当前源地址
npm get registry
##更换为阿里源
npm config set registry https://registry.npmmirror.com/
##还原为官方源
npm config set registry https://registry.npmjs.org/
##查询当前源地址
npm get registry
##更换为阿里源
npm config set registry https://registry.npmmirror.com/
##还原为官方源
npm config set registry https://registry.npmjs.org/