关联文章: https://blog.csdn.net/fareast_mzh/article/details/86712896
composer require phpoffice/phpexcel
https://github.com/PHPOffice/PHPExcel
* ./app/Http/Controllers/PackageController.php
https://laravel.com/docs/5.6/controllers
* ./app/Packages.php
php artisan make:model Packages
https://blog.csdn.net/fareast_mzh/article/details/86703181 (私密文章)
* ./routes/web.php
* 启动服务
https://laravel.com/docs/5.6
E:\code\export>php artisan serve
Laravel development server started: <http://127.0.0.1:8000>
* composer.json
* assign.js
output: