邮递员发布请求给出正确的结果，但 ajax 发布给出 Count=0答案

【问题标题】：Postman post request give proper result but ajax post give Count=0邮递员发布请求给出正确的结果，但 ajax 发布给出 Count=0
【发布时间】：2020-08-24 02:16:31
【问题描述】：

JS：

newRecords = [{
    "id": 7,
    "name": "Raddish",
    "rate": 30,
    "weight": "2",
    "amountperweight": 60
  },
  {
    "id": 8,
    "name": "Peas",
    "rate": 35,
    "weight": "4",
    "amountperweight": 140
  }
]

$.ajax({
  method: "POST",
  url: "http://localhost:36551/Orders/GenerateOrder",
  data: ({
    "generateOrder": newRecords
  }),
  contentType: "application/json, charset=utf-8",
  success: function(response) {
    console.log("response", response);
  },
  error: function(error) {}
});

Asp.Net：

 public class OrderCart
        {
            public int id { get; set; }
            public string name { get; set; }
            public int rate { get; set; }
            public string weight { get; set; }
            public int amountperweight { get; set; }
        }

    [HttpPost]
    [Route("GenerateOrder")]
    [ActionName("GenerateOrder")]
    public List<OrderCart> GenerateOrder(List<OrderCart> generateOrder)
    {
        return generateOrder;
    }

邮差回复：

VS 中的 Ajax Post 响应：

【问题讨论】：

标签： jquery asp.net ajax api postman

【解决方案1】：

客户端代码如下所示：

@section scripts{
    <script>
        $(function () {
            var generateOrder = [{ "id": 7, "name": "Raddish", "rate": 30, "weight": "2", "amountperweight": 60 },
            { "id": 8, "name": "Peas", "rate": 35, "weight": "4", "amountperweight": 140 }];

            $.ajax({
                method: "POST",
                url: "/Orders/GenerateOrder",
                data: JSON.stringify(generateOrder),
                contentType: "application/json, charset=utf-8",
                success: function (response) {
                    console.log("response", response);
                },
                error: function (error) {
                }
            });
        })
    </script>
}

服务器端操作将是：

[HttpPost]
        public List<OrderCart> GenerateOrder(List<OrderCart> generateOrder)
        {
            return generateOrder;
        }

现在 Visual Studio 应该可以正常工作了。

【讨论】：

【解决方案2】：

改变行数据

data: JSON.stringify([
{ 
    id: 0,
    name: '',
    rate: 0,
    weight: 0,
    amountperweight: 0
},
{ 
    id: 0,
    name: '',
    rate: 0,
    weight: 0,
    amountperweight: 0
},
...
]),

如果变量 newRecords 是格式

    [
    { 
        id: 0,
        name: '',
        rate: 0,
        weight: 0,
        amountperweight: 0
    },
    { 
        id: 0,
        name: '',
        rate: 0,
        weight: 0,
        amountperweight: 0
    },
    ...
    ]

这样做

data: JSON.stringify(newRecords),

【讨论】：