修改文件上传

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

     public function upload(Request $request)
     {
         try {
-            if ($request->hasFile('file') && $request->file('file')->isValid()) {
+            $photo = $_FILES['file'];
+            //if ($request->hasFile('file') && $request->file('file')->isValid()) {
+            if ($photo){
                 $photo = $request->file('file');
                 $extension = $photo->extension();
                 $path = $photo->getRealPath();