Question

我和这个json有点挣扎，我的第一个错误是：

 $exception {"Error converting value 167 to type 'Web.Domain.Ean.HotelList'. Path '', line 1, position 3."} System.Exception {Newtonsoft.Json.JsonSerializationException}

所以我一直在尝试不同的尝试方法，现在我觉得我的代码完全混乱，现在我收到了这个错误。

Cannot implicitly convert type 'string' to 'System.Collections.Generic.IEnumerable<Web.Domain.Ean.HotelCount>'

任何有新眼镜的人都可以看看，看看他们是否可以帮助解决错误，如果可能的话还解释一些json理论来帮助我学习。

public class HotelCount
{
    public string ActivePropertyCount { get; set; }
}

public IEnumerable<HotelCount> GetNumberOfHotels()
{
    var numberOfHotelCount = GetHotelsFromEan.GetListOfHotels();
    var root = JObject.Parse(numberOfHotelCount.ToString());
    IList<JToken> hotelCount = root["HotelListResponse"]["HotelList"].Children().ToList();

    IList<HotelCount> count = new List<HotelCount>();
    foreach (JToken hotel in hotelCount)
    {
        HotelCount countHotels = JsonConvert.DeserializeObject<HotelCount>(hotel.ToString());
        count.Add(countHotels);
    }

    var t = count.FirstOrDefault();
    //IList<HotelCount> numberOfHotels = hotelCount.Select(count => JsonConvert
    //                             .DeserializeObject<HotelCount>(
    //                             count.SingleOrDefault().ToString())).ToList();
    return t.ActivePropertyCount;
}

由于乔治

=========================更新后的代码==================== ===========

public string GetNumberOfHotels()
        {
            var numberOfHotelCount = GetHotelsFromEan.GetListOfHotels();
            var root = JObject.Parse(numberOfHotelCount.ToString());

            IList<JToken> hotelCount = root["HotelListResponse"]["HotelList"].Children().ToList();

            IList<HotelCount> count = hotelCount.Select(hotel => JsonConvert.DeserializeObject<HotelCount>(hotel.ToString())).ToList();


            return count.ToString();
        }

==============================新的更新=============== =================

json值的格式为{“@ activePropertyCount”：“167”，“

所以我的课程是：

public class HotelCount
    {
        public string ActivePropertyCount { get; set; }
    }

我的上一次错误是。

消息=将值167转换为“Web.Domain.Ean.HotelCount”类型时出错消息=无法转换或从System.Int64转换为Web.Domain.Ean.HotelCount。

因此，如果我回到下面的代码，需要做什么来返回ActivePropertyCount的值

public IEnumerable<HotelCount> GetNumberOfHotels()
        {
            var numberOfHotelCount = GetHotelsFromEan.GetListOfHotels();
            var root = JObject.Parse(numberOfHotelCount.ToString());

            IList<JToken> hotelCount = root["HotelListResponse"]["HotelList"].Children().ToList();

            IList<HotelCount> count = new List<HotelCount>();
            foreach (JToken hotel in hotelCount)
            {
                HotelCount countHotels = JsonConvert.DeserializeObject<HotelCount>(hotel.FirstOrDefault().ToString());
                count.Add(countHotels);
            }

            return count;

        }

======================修正了它======================= ==

public string GetNumberOfHotels()
        {
            var numberOfHotelCount = GetHotelsFromEan.GetListOfHotels();
            var root = JObject.Parse(numberOfHotelCount.ToString());

            IList<JToken> hotelCount = root["HotelListResponse"]["HotelList"].Children().Values().ToList();

            var s = hotelCount.FirstOrDefault();
            var t = s;

           // IList<HotelCount> count = hotelCount.Select(hotel => JsonConvert.DeserializeObject<HotelCount>(hotel.FirstOrDefault().ToString()).ActivePropertyCount).ToList();

            return t.ToString();

        }

Answer 1

真的不确定你有什么但是试试这个（猜测jToken属性 ActivePropertyCount 但是根据需要替换）：

public string GetNumberOfHotels()
{      
    var numberOfHotelCount = GetHotelsFromEan.GetListOfHotels();
    var root = JObject.Parse(numberOfHotelCount.ToString());

    // Get list of hotels
    IList<JToken> hotels = root["HotelListResponse"]["HotelList"].Children().ToList()
        .Select(hotel => JsonConvert.DeserializeObject<HotelCount>(hotel.ToString())).ToList();

    // Now get ActivePropertyCount for each hotel
    int totalCount = 0;
    foreach (JToken jToken in hotels)
    {
        totalCount += jToken.Value<int>("ActivePropertyCount");
    }
    return totalCount.ToString();
}

如何返回1张json数据

1 个答案: