第一步：
config/filesystem.php 文件

return [// 默认磁盘'default' => env('filesystem.driver', 'public'),// 这里上传的文件会上传到 public/uploads/ 下// 磁盘列表'disks' => ['local'=> ['type' => 'local','root' => app()->getRuntimePath() . 'storage',],'public' => ['type' => 'local','root' => app()->getRootPath() . 'public/uploads','url' => '/uploads','visibility' => 'public',],'images' => ['type' => 'local','root' => app()->getRootPath() . 'public/uploads/images','url' => '/uploads/images','visibility' => 'public',],// 更多的磁盘配置信息],];

第二步：

public function fileUp(){$files = request()->file('image');if (empty($files)) {return to_json(0, '请选择上传文件', 1);}$savename = [];if (is_array($files)) {foreach($files as $file){$savename[] = \think\facade\Filesystem::putFile('topic', $file);}} else {$savename[] = \think\facade\Filesystem::putFile('topic', $files);}var_dump($savename);exit();}