修改文件上传

manage-server/app/Http/Controllers/CommonController.php

     public function upload(Request $request)
     {
         try {
-            if ($request->hasFile('photo') && $request->file('photo')->isValid()) {
+            $photo = $request->file('photo');
+            if ($photo->isValid()) {
                 $photo = $request->file('photo');
                 $extension = $photo->extension();
                 $store_result = $photo->store('photo');
             } else {
                 return response()->json([
                     'status' => -1,
-                    'message' => "error, photo is valid!"
+                    'message' => "error, photo is not valid!"
                 ]);
             }
         } catch (Exception $e) {