jquery给action传递参数为什么是null

Question

var data = "ProductId=1&BuyNumber=1&Remark='sss'&UserName='sss'&PostalCode='xx'&ProvinceName='x'&CityName='xxx'&CountryName='xx'&DetailInfo='xx'&NationalCode='sss'&TelNumber='123456'";
        $.ajax({
            url: `${this.serverUrl}/jjzh002/createprepayment`,
            type: 'POST',
            dataType: 'json',
            data: data,
            success: function (data) {

            }
        });

 

Answer 1

最终的问题是Models.Prepayment.Prepayment 这个类的问题

public class Prepayment
    {
        /// <summary>
        /// 产品id
        /// </summary>
        public int ProductId; 这个有问题

正确的是 public int ProductId {get;set;}
        /// <summary>
        /// 购买数量
        /// </summary>
        public int BuyNumber { get; set; }
        /// <summary>
        /// 备注
        /// </summary>
        public string Remark { get; set; }
        /// <summary>
        /// 收货人姓名
        /// </summary>
        public string UserName { get; set; }
        /// <summary>
        /// 邮编
        /// </summary>
        public string PostalCode { get; set; }
        /// <summary>
        /// 国标收货地址第一级地址（省）
        /// </summary>
        public string ProvinceName { get; set; }
        /// <summary>
        /// 国标收货地址第二级地址（市）
        /// </summary>
        public string CityName { get; set; }
        /// <summary>
        /// 国标收货地址第三级地址（国家）
        /// </summary>
        public string CountryName { get; set; }
        /// <summary>
        /// 详细收货地址信息
        /// </summary>
        public string DetailInfo { get; set; }
        /// <summary>
        /// 收货地址国家码
        /// </summary>
        public string NationalCode { get; set; }
        /// <summary>
        /// 收货人手机号码
        /// </summary>
        public string TelNumber { get; set; }
    }

Answer 2

请注意参数名的对应
$.ajax({
url: ${this.serverUrl}/jjzh002/createprepayment,
type: 'POST',
dataType: 'json',
data: {model:data},
success: function (data) {

        }
    });

Answer 3

你试试这样的形式传入 json格式的参数

{"ProductId":1,"BuyNumber":1,"Remark":"sss",......}

Answer 4

你管这个叫json...