我已经把接口供应商（作为UplSupplierImport）在app\Exports.我有其他的麻烦了，麻烦是“数组到字符串转换”.这是我的新接口供应商（作为UplSupplierImport），我已经把我的app/export.对于控制器的新代码与你之前的代码相同：

class InterfaceSupplier implements ToArray
{
    public function array(array $row)
    {
        return [
            'nomorUrut' => $row[0],
            'namaSupplier' => $row[1],
            'singkatanSupplier' => $row[2],
            'tipeSupplier' => $row[3],
            'alamatSupplier' => $row[4],
            'kodePosSupplier' => $row[5],
            'noTelpSupplier' => $row[6],
            'noFax' => $row[7],
            'emailSupplier' => $row[8],
            'contakSupplier' => $row[9],
            'hp' => $row[10],
        ];
    }

}

这是控制器代码：

public function postImport(Request $request)
{

    $path = $request->file('file')->getRealPath();
    $insert_data = Excel::toArray(new InterfaceSupplier(), $path);

    if(!empty($insert_data))
    {
        DB::table('uplSupplier')->insert($insert_data);
    }

    return back()->with('success', 'Excel Data Imported successfully.');

}

Load方法从当前版本的Laravel Exel中删除。您可以考虑这样做：
创建导入类：

namespace App\Imports;

use Maatwebsite\Excel\Concerns\ToArray;

class InterfaceSupplier implements ToArray
{
    public function array(array $row)
    {}
}

然后：

public function postImport(Request $request)
{
    $path = $request->file('file')->getRealPath();
    $data = Excel::toArray(new InterfaceSupplier(), $path);
    
    $data = $data[0];
    $insert_data = [];

    foreach ($data as $row) {
        $insert_data[] = [
            'nomorUrut' => $row[0],
            'namaSupplier' => $row[1],
            'singkatanSupplier' => $row[2],
            'tipeSupplier' => $row[3],
            'alamatSupplier' => $row[4],
            'kodePosSupplier' => $row[5],
            'noTelpSupplier' => $row[6],
            'noFax' => $row[7],
            'emailSupplier' => $row[8],
            'contakSupplier' => $row[9],
            'hp' => $row[10],
        ];
    }

    if (!empty($insert_data)) {
        DB::table('uplSupplier')->insert($insert_data);
    }

    return back()->with('success', 'Excel Data Imported successfully.');
}

如果要使用import方法，请参考https://docs.laravel-excel.com/3.1/imports/batch-inserts.html