vsCode啓動vue項目報錯：npm ERR! enoent ENOENT: no such file or directory, open'E:xxxx\package.json'

1、在VSCode用npm run dev運行項目時報錯，報錯信息如下：

aigov@aigov-PC MINGW64 /e/DevelopmentSoftware/aigov/xx (master)
$ npm install                                                       //添加包依賴 
npm WARN saveError ENOENT: no such file or directory, open 'E:\DevelopmentSoftware\aigov\xx\package.json'
npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN enoent ENOENT: no such file or directory, open 'E:\DevelopmentSoftware\aigov\xx\package.json'
npm WARN xx No description
npm WARN xx No repository field.
npm WARN xx No README data
npm WARN xx No license field.

up to date in 1.137s
found 0 vulnerabilities


aigov@aigov-PC MINGW64 /e/DevelopmentSoftware/aigov/xx (master)
$ npm run dev                                                        //開始運行項目
npm ERR! code ENOENT
npm ERR! syscall open
npm ERR! path E:\DevelopmentSoftware\aigov\xx\package.json
npm ERR! errno -4058
npm ERR! enoent ENOENT: no such file or directory, open 'E:\DevelopmentSoftware\aigov\xx\package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\aigov\AppData\Roaming\npm-cache\_logs\2019-09-03T06_57_06_336Z-debug.log

2、原因：

報錯原因是我沒有進入到項目文件夾下進行npm install ，在項目文件夾外一層直接npm install去了。。導致項目沒有真正添加包依賴，項目文件夾裏也沒有生成package.josn文件，所以找不到，然後報了上面的錯。

3、解決：

先cd進入項目文件目錄，再進行依賴包安裝，最後再啓動就沒問題了。