Maatwebsite\Excel如何下载文件

composer require maatwebsite/excel

public function export() {
        return Excel::download(new CustomerExport(), 'users.csv', 
        \Maatwebsite\Excel\Excel::CSV, 
        ['Content-Type' => 'text/csv', 
        'Content-Type' => 'application/vnd.ms-excel',
        'Content-Disposition' => "attachment; filename='Report.xls'"]);
    }

路由

 Route::get('customers/export', "CustomersController@export");

管理后台点击导出
response的是数据库的数据，并没有像期望的那样下载users.csv文件。

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