如何在laravel中下载上传的文件

<form action="/upload" method="POST" enctype="multipart/form-data">
    @csrf
    <input type="file" name="file">
    <button type="submit">上传文件</button>
</form>

Route::post('/upload', 'FileController@upload');

use Illuminate\Http\Request;

class FileController extends Controller
{
    public function upload(Request $request)
    {
        if ($request->hasFile('file')) {
            $file = $request->file('file');
            $path = $file->store('uploads'); // 将文件保存到storage/app/uploads目录下
            return $path;
        }
    }
}

Route::get('/download/{filename}', 'FileController@download');

use Illuminate\Support\Facades\Storage;

class FileController extends Controller
{
    public function download($filename)
    {
        $path = storage_path('app/uploads/' . $filename); // 获取文件的完整路径
        if (file_exists($path)) {
            return response()->download($path, $filename); // 返回文件的下载响应
        }
    }
}