到创建Vue项目，即是在输入vue init webpack my-first-vue 回车键之后显示 Command vue init requires a global addon to be installed. Please run npm install -g @vue/cli-init and try again.

到创建Vue项目，即是在输入vue init webpack my-first-vue 回车键之后显示

Command vue init requires a global addon to be installed.

  Please run npm install -g @vue/cli-init and try again.

npm install -g @vue/cli-init   

运行这个  在创建项目