drb/app/Exports/MyExport.php

<?php

namespace App\Exports;

use Maatwebsite\Excel\Facades\Excel;




class MyExport {

    public $base1_path = '/app';
    public $base2_path = '/excel';

    public function commonExport($data,$path = ''){

        if(empty($path)) $path = date('YmdHis').rand(1000,9999).'.xlsx';
        $param = $data;
        $export = new CommonExport($param);
        $date = date('Ymd');
        $path = $date.'/'.$path;
        Excel::store($export, $path);
        return ['file'=>$this->base2_path.'/'.$path];
    }


    public function excelDownload($file){
        return response()->file(storage_path().$this->base1_path.$this->base2_path.'/'.$file);
    }

}