使用充血模型构建类时，Web API无法获取前端传过来的参数

问题：构建充血模型Item类，在前端明明传入了Amount对象参数，后端却无法获取

 以下是Item类中的Amount属性及构造函数

   public Amount? Amount { get;private set; }
   private Item()
   {

   }
   public Item(string name)
   {
      this.Name = name;
      this.Id=Guid.NewGuid();
      this.CreateTime=DateTime.Now;
   }

解决方案：

应该在构造函数时对Amount属性进行初始化才能在控制器中接收

public Item(string name,Amount? amount,string? Des,Guid? sordId,DateTime? expDate)
{
    this.Name = name;
    this.Id=Guid.NewGuid();
    this.CreateTime=DateTime.Now;
    this.Amount = amount;
    this.Description = Des;
    this.SortId = sordId;
    this.ExpirationDate = expDate;
}