在MVC中检测到属性Error的自引用循环

本文关键字：Error 自引用 循环 属性 MVC 检测 | 更新日期: 2023-09-27 18:19:37

我在淘汰中使用MVVM。当我尝试在mvc中对对象进行Searalize时，我得到了以下错误。有谁能帮我做这件事吗。

错误行：返回Json（JsonConvert.SerializeObject（resultwrapper），JsonRequestBehavior.AllowGet）

错误为类型为"DCL.HotelDetails"的属性"HotelDetails"检测到自引用循环。路径为"HotelDetails[3].HotelImages[0]"。

我的型号

 public class HotelDetails : Entity
    {
        public HotelDetails()
    {
        this.HotelImages = new List<HotelImages>();
    } 
        [Key]
        public virtual Guid Id { get; set; }
        public virtual Guid HotelChainId { get; set; }
        public virtual int OldHotel { get; set; }
        public virtual string StarRating { get; set; }
        public virtual string PostalCode { get; set; }
        public virtual string Longtitude { get; set; }
        public virtual string Latitude { get; set; }
        public virtual string DestinationID { get; set; }
        public virtual string HotelLocation { get; set; }
        public virtual string PhoneNumber { get; set; }
        public virtual string Address { get; set; }
        public virtual string HotelArea { get; set; }
        public virtual string HotelType { get; set; }
        public virtual string HotelTheme { get; set; }

        //public virtual Destination Destination { get; set; }
        public virtual List<HotelImages> HotelImages { get; set; }
    }

我的C#代码

 IEnumerable<IGrouping<string, DCL.JsonMatrixModel.availableHotels>> quer =
      from ff in ddd
      from ss in ff.availableHotels
      group ss by ss.hotelCode;

            List<HotelDetails> lsthoteldetails = new List<HotelDetails>();
            List<HotelImages> lsthotelimages = new List<HotelImages>();

            HotelDetails _hoteldetails;

            foreach (var y in quer)
            {
                _hoteldetails = new HotelDetails();

                string ss = y.Key;
                _hoteldetails = db.HotelDetails.Where(x => x.Code == ss).FirstOrDefault();
                if (_hoteldetails != null)
                {
                    lsthotelimages = db.HotelImages.Where(x => x.HotelDetailsId == _hoteldetails.Id).ToList();
                    _hoteldetails.HotelImages = lsthotelimages;
                    lsthoteldetails.Add(_hoteldetails);
                }


            }
           // resultwrapper.key = "kdkdk";
            resultwrapper.LoadData();
            resultwrapper.HotelDetails = lsthoteldetails;

            return Json(JsonConvert.SerializeObject(resultwrapper), JsonRequestBehavior.AllowGet);

在MVC中检测到属性Error的自引用循环

如果HotelImages有对HotelDetails的引用，那么您可能会得到一个循环引用。您可以通过设置PreserveReferencesHandling = PreserveReferencesHandling.Objects来防止这种情况发生。例如

string json = JsonConvert.SerializeObject(resultwrapper, Formatting.Indented, new JsonSerializerSettings { PreserveReferencesHandling = PreserveReferencesHandling.Objects });

参考文件

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