更新

app/Http/Controllers/Api/UploadController.php

@@ -12,8 +12,7 @@ class UploadController extends Controller
     {
         try {
             //获取上传的文件
-            $file = $request;
-            return response()->json(['data' => $file]);
+            $file = $request->file('file');
             //获取上传图片的临时地址
             $tmppath = $file->getRealPath();
             //生成文件名

app/Http/Controllers/Api/UserController.php

@@ -45,8 +45,6 @@ class UserController extends Controller
      * 选择性别
      */
     public function checksex(Request $request){
-        $file = $request->post();
-        return response()->json(['data' => $file]);
         $user = auth('api')->user();
         $validator = Validator::make($request->all(), [
             'sex' => 'required'