[英]using DataContractJsonSerializer knowntype
我正在嘗試去散布json:
類由json2sharp生成
但這會引發異常:
元素“:數據”包含來自映射到名稱“ http://schemas.datacontract.org/2004/07/TMSoft.CryptoDoc.Gu45:Gu45 ”的數據類型的數據。 反序列化器沒有任何類型的信息,具有相同的名稱。 使用DataContractResolver或添加與“ Gu45”(已知類型的列表)匹配的類型,例如使用KnownTypeAttribute屬性或通過將其添加到傳遞給DataContractSerializer的已知類型的列表中。
如何解決?
namespace json
{
class Program
{
static void Main(string[] args)
{
string json = System.IO.File.ReadAllText(@"D:\Json.txt");
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(RootObject));
var account = serializer.ReadObject(new MemoryStream(Encoding.UTF8.GetBytes(json)));
}
}
public class Branch
{
public string Code { get; set; }
public string Name { get; set; }
}
public class Direction
{
public object Code { get; set; }
public string Name { get; set; }
}
public class Org
{
public string Code { get; set; }
public string Name { get; set; }
}
public class Wagon
{
public string Comment { get; set; }
public object NoteTimeString { get; set; }
public string Number { get; set; }
public string OwnerCode { get; set; }
public string StateString { get; set; }
}
public class Data
{
public string __type { get; set; }
public Branch Branch { get; set; }
public string DeliveryTimeString { get; set; }
public Direction Direction { get; set; }
public string EsrCode { get; set; }
public int GU45Type { get; set; }
public object ManeuverTime { get; set; }
public string Number { get; set; }
public Org Org { get; set; }
public object ParkName { get; set; }
public object ParkNum { get; set; }
public string RailwayName { get; set; }
public string RegistrationDateTimeString { get; set; }
public object Span { get; set; }
public string StationName { get; set; }
public string TakingTimeString { get; set; }
public object TrackNum { get; set; }
public object TrackNumAddition { get; set; }
public object WagonNote { get; set; }
public List<Wagon> Wagons { get; set; }
}
public class Body
{
public Data Data { get; set; }
public List<int> Signature { get; set; }
}
public class RootObject
{
public Body Body { get; set; }
public int Revision { get; set; }
public int State { get; set; }
public string StateDate { get; set; }
public string WosId { get; set; }
}
}
Json.txt:
{
"Body": {
"Data": {
"__type": "Gu45:#TMSoft.CryptoDoc.Gu45",
"Branch": {
"Code": "9898",
"Name": "Place"
},
"DeliveryTimeString": "07.03.2014 10:00:00",
"Direction": {
"Code": null,
"Name": "Test"
},
"EsrCode": "320007",
"GU45Type": 2,
"ManeuverTime": null,
"Number": "1",
"Org": {
"Code": "1860",
"Name": "Test"
},
"ParkName": null,
"ParkNum": null,
"RailwayName": "Test",
"RegistrationDateTimeString": "07.03.2014",
"Span": null,
"StationName": "Test",
"TakingTimeString": "07.03.2014 12:00:00",
"TrackNum": null,
"TrackNumAddition": null,
"WagonNote": null,
"Wagons": [
{
"Comment": "РЕМТ",
"NoteTimeString": null,
"Number": "44916989",
"OwnerCode": "22",
"StateString": "0"
}
]
},
"Signature": [
48,
106
]
},
"Revision": 1966,
"State": 2,
"StateDate": "2014-03-07T12:48:03Z",
"WosId": "15805729"
}
在以前的DataContractJsonSerializer項目中,我也有類似的經驗。 似乎“ __type”字段對DataContractJsonSerializer具有特殊含義。 這是我使用Json.net的主要原因之一
僅當它是對象中的第一個屬性時才重要,但是如果它具有任何其他位置則它起作用並且不會引發異常。 您可以嘗試一下,但要更改Json.txt中branch屬性下方的__type位置。 我不知道是不是這樣,您可以找到一種解決方法。 我還沒有嘗試過這種解決方案,但是值得嘗試一下:
希望能幫助到你
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