使用newtonsoft反序列化JSON对象/数组时出错

Question

我有一个包含以下数据的json字符串

"air:FlightOptionsList": {
    "air:FlightOption": [{
            "LegRef": "hx5kk+3R2BKABGzqAAAAAA==",
            "Destination": "LHE",
            "Origin": "DXB",
            "air:Option": {
                "Key": "hx5kk+3R2BKA/FzqAAAAAA==",
                "TravelTime": "P0DT3H0M0S",
                "air:BookingInfo": {
                    "BookingCode": "I",
                    "BookingCount": "7",
                    "CabinClass": "Economy",
                    "FareInfoRef": "hx5kk+3R2BKAzFzqAAAAAA==",
                    "SegmentRef": "hx5kk+3R2BKAtFzqAAAAAA=="
                }
            }
        }, {
            "LegRef": "hx5kk+3R2BKAFGzqAAAAAA==",
            "Destination": "DXB",
            "Origin": "LHE",
            "air:Option": {
                "Key": "hx5kk+3R2BKACGzqAAAAAA==",
                "TravelTime": "P0DT11H30M0S",
                "air:BookingInfo": [{
                        "BookingCode": "U",
                        "BookingCount": "7",
                        "CabinClass": "Economy",
                        "FareInfoRef": "hx5kk+3R2BKA+FzqAAAAAA==",
                        "SegmentRef": "hx5kk+3R2BKAvFzqAAAAAA=="
                    }, {
                        "BookingCode": "Y",
                        "BookingCount": "9",
                        "CabinClass": "Economy",
                        "FareInfoRef": "hx5kk+3R2BKA+FzqAAAAAA==",
                        "SegmentRef": "hx5kk+3R2BKAxFzqAAAAAA=="
                    }
                ],
                "air:Connection": {
                    "SegmentIndex": "0"
                }
            }
        }
    ]
}

我的班级结构如下:

public class FlightOptionsList
{
    public List<FlightOption> FlightOption { get; set; }
}

public class FlightOption
{
    public string LegRef { get; set; }
    public string Destination { get; set; }
    public string Origin { get; set; }
    public Option Option { get; set; }
}

public class Option
{
    public string Key { get; set; }
    public string TravelTime { get; set; }
    public List<BookingInfo> BookingInfo { get; set; }
    public Connection Connection { get; set; }
}

public class BookingInfo
{
    public string BookingCode { get; set; }
    public string BookingCount { get; set; }
    public string CabinClass { get; set; }
    public string FareInfoRef { get; set; }
    public string SegmentRef { get; set; }
}

我想反序列化它,但它给我一个错误如下:

无法将当前JSON对象(例如{"name":"value"})反序列化为类型'System.Collections.Generic.List`1 [ParseSoapEnveloperReqRes.BookingInfo]',因为该类型需要JSON数组(例如[1,2, 3])正确反序列化.要修复此错误,请将JSON更改为JSON数组(例如[1,2,3])或更改反序列化类型,使其成为普通的.NET类型(例如,不是像整数这样的基本类型,而不是类似的集合类型可以从JSON对象反序列化的数组或List.JsonObjectAttribute也可以添加到类型中以强制它从JSON对象反序列化.路径'FlightOptionsList.FlightOption [0] .Option.BookingInfo.BookingCode',第394行,第59位.

这是因为,好像你看到了json字符串,FlightOptionsList.FlightOption [0] .Option.BookingInfo是一个对象,但在FlightOptionsList.FlightOption [1] .Option中.您可以看到BookingInfo是一个数组.

如何设置此问题...我使用以下代码将json字符串反序列化为类对象

 var AirTravelResultModel = JsonConvert.DeserializeObject<AirTravelResultModel>(xmlInputData);

Answer 1

看看Camilo Martinez对这个讨论的回答: 有时候数组有时反对JSON的反序列化

基本上,您需要将JsonConverter属性添加到BookingInfo属性并在JsonConverter实现中处理转换.

public class FlightOptionsList
{
    public List<FlightOption> FlightOption { get; set; }
}

public class FlightOption
{
    public string LegRef { get; set; }
    public string Destination { get; set; }
    public string Origin { get; set; }
    public Option Option { get; set; }
}

public class Option
{
    public string Key { get; set; }
    public string TravelTime { get; set; }
    [JsonConverter(typeof(SingleValueArrayConverter<BookingInfo>))]
    public List<BookingInfo> BookingInfo { get; set; }
    public Connection Connection { get; set; }
}

public class BookingInfo
{
    public string BookingCode { get; set; }
    public string BookingCount { get; set; }
    public string CabinClass { get; set; }
    public string FareInfoRef { get; set; }
    public string SegmentRef { get; set; }
}

public class Connection
{
    public string SegmentIndex { get; set; }
}

这是转换器:

public class SingleValueArrayConverter<T> : JsonConverter
{
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        throw new NotImplementedException();
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        object retVal = new Object();
        if (reader.TokenType == JsonToken.StartObject)
        {
            T instance = (T)serializer.Deserialize(reader, typeof(T));
            retVal = new List<T>() { instance };
        }
        else if (reader.TokenType == JsonToken.StartArray)
        {
            retVal = serializer.Deserialize(reader, objectType);
        }
        return retVal;
    }

    public override bool CanConvert(Type objectType)
    {
        return true;
    }
}