Json没有得到实际的数据

本文关键字：数据 Json | 更新日期: 2023-09-27 18:12:20

我正在传递一些值给MVC控制器，它正在返回json值。现在的问题是控制器端，值正确返回，但当我在jquery中检查它时，它显示的是未定义的数据

控制器代码: 

[HttpPost]
[Authorize]
public ActionResult DeleteServices(List<Int32> serMapId)
{
  int success = -1;
  if (serMapId.Count > 0 )
  {
    int count = RequestDL.DelServices(serMapId);
    if (count > 0)
    {
      success = count;
    }
  }
  return Json(new { success });
}
Jquery Ajax Script: 
$.ajax({
  url: "/CRM/DeleteServices",
  type: "POST",
  data: postData,
  success: function (result) {
   alert(result.success);
   if (result.success > 0) {
     alert("Service(s) deleted successfully");
   }
   else {
     alert("Service(s) not deleted successfully");
   }
  },
  error: function () {
   alert("Something goes wrong at server side.");
  }
});

提前感谢。

Json没有得到实际的数据

尝试更改响应

return Json(new { success = success });

或

return Json(new { success });

一些快速测试产生以下结果:

//Returns 1
//this is not a valid JSON object
//If 'success' were a complex object, this would work as expected
return Json(success);
//Returns {"success":1}
return Json(new { success });
//Returns {"success":1}
return Json(new { success = success });

添加

数据类型:json,

在美元。ajax函数

    $.ajax({
      url: "/CRM/DeleteServices",
      type: "POST",
      data: postData,
      dataType:'json',
    });

尝试以这种方式返回GET请求的成功对象:

return Json(success, JsonRequestBehavior.AllowGet);

POST返回Json:

return Json(success);

别忘了用HttpPost修饰你的方法，这样你的控制器就会像这样

[HttpPost]
[Authorize]
public ActionResult DeleteServices(List<Int32> serMapId)
{
  int success = -1;
  if (serMapId.Count > 0 )
  {
    int count = RequestDL.DelServices(serMapId);
    if (count > 0)
    {
      success = count;
    }
  }
  return Json(success);
}

确保您的Ajax请求格式如下:

$.ajax({
  url: "/CRM/DeleteServices",
  type: "POST",
  data: postData,
  dataType: 'json',
  success: function (result) {
   alert(result.success);
   if (result.success > 0) {
     alert("Service(s) deleted successfully");
   }
   else {
     alert("Service(s) not deleted successfully");
   }
  },
  error: function () {
   alert("Something goes wrong at server side.");
  }
});
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