Reputation: 688
JSON Deserialize Object
I've got problem with JSON Deserialize Object. I'm getting this json:
{
"status": "ok",
"message": "OK",
"clientData": {
"id": 1,
"properties": {
"imie": "xxx",
"nazwisko": "xxxx",
"tel": "5121211",
"email": "woeee@wwww",
"pesel": "1111111",
"kod_pocztowy": "2222",
"miejscowosc": "eeee",
"kwota_wnioskowana": 1,
"dochod": 11,
"bik": null,
"firma_nip": "1",
"komornik": null,
"oddluzanie": null,
"leadID": "I1"
},
"subcategories": {
"67": 2001,
"69": 2003
}
},
"linksData": {
"3": {
"linkId": 574,
"link": "ddd",
"kartaPryw": 1,
"produktNazwa": "xxx",
"alternatives": {
"114": {
"linkId": 114,
"link": "xxx",
"kartaPryw": 1
},
"513": {
"linkId": 513,
"link": "xxx",
"kartaPryw": 1
},
"532": {
"linkId": 532,
"link": "xxx",
"kartaPryw": 1
}
}
},
"12": {
"linkId": 33,
"link": "wwww",
"kartaPryw": 0,
"produktNazwa": "ee",
"alternatives": {
"38": {
"linkId": 38,
"link": "wwww",
"kartaPryw": 0
},
"40": {
"linkId": 40,
"link": "qqqq",
"kartaPryw": 0
},
"665": {
"linkId": 665,
"link": "wwww",
"kartaPryw": 0
}
}
},
"14": {
"linkId": 116,
"link": "ww",
"kartaPryw": 0,
"produktNazwa": "w",
"alternatives": {
"123": {
"linkId": 123,
"link": "ffff",
"kartaPryw": 0
},
"124": {
"linkId": 124,
"link": "ffff",
"kartaPryw": 0
},
"517": {
"linkId": 517,
"link": "wwww",
"kartaPryw": 0
},
"519": {
"linkId": 519,
"link": "ffff",
"kartaPryw": 0
}
}
},
"17": {
"linkId": 404,
"link": "ffff",
"kartaPryw": 0,
"produktNazwa": "ee",
"alternatives": []
},
"26": {
"linkId": 135,
"link": "eeee",
"kartaPryw": 0,
"produktNazwa": "eee",
"alternatives": []
},
"27": {
"linkId": 790,
"link": "eeee",
"kartaPryw": 0,
"produktNazwa": "ee",
"alternatives": {
"792": {
"linkId": 792,
"link": "eeeee",
"kartaPryw": 0
}
}
},
"34": {
"linkId": 778,
"link": "eee",
"kartaPryw": 0,
"produktNazwa": "eee",
"alternatives": []
}
},
"currentCartNr": 1
}
Format is awful here so paste this code here to see it better: http://json.parser.online.fr/
and here are my classes
public class Client
{
public string Status { get; set; }
public string Message { get; set; }
public Data clientData { get; set; }
public Dictionary<string, linksData> linksData;
public int currentCartNr { get; set; }
}
public class Data
{
public int id { get; set; }
public Dictionary<string, string> properties { get; set; }
public Dictionary<string, int> subcategories { get; set; }
}
public class linksData
{
public int linkId { get; set; }
public string link { get; set; }
public int kartaPryw { get; set; }
public string produktNazwa { get; set; }
public Dictionary<string, alternatives> alternatives;
}
public class alternatives
{
public int linkId { get; set; }
public string link { get; set; }
public int kartaPryw { get; set; }
}
and I can't deserialize my JSON, i'm getting error when it try to deserialize "alternatives". If I comment this public Dictionary<string, alternatives> alternatives; it's working but but I need this field. What's wrong with it?
and here it is how I deserialize it:
var myObject = JsonConvert.DeserializeObject<Client>(get_person);
Error message:
Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'System.Collections.Generic.Dictionary`2[System.String,Linker.Class.alternatives]' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly. To fix this error either change the JSON to a JSON object (e.g. {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.
UPDATE
Problem solved. alternatives [] was changed to value null and it works.
Upvotes: 2
Views: 554
Answers (2)
Reputation: 498
The problem as I can see is with your serialization not the deserialization. By serializing null values as a dictionary you can't just deserialize it Later the question is where are you getting your JSON file from , is it you who is serializing it? if so all you need to do is change your serialization to this
var jsonText=JsonConvert.serialize(JsonObject, new JsonSerializerSettings() {NullValueHandling= NullValueHandling.Ignore });
deserialization would be the same as you have done in your code
Upvotes: 1
Reputation: 3043
It seems to be an issue on your JSON (I would say). When alternatives contains data, it is okay (it will serialized as a Dictionary) but when it is empty, it shows:
"alternatives": []
Which I think you have to configure your parser otherwise will fail. At least with Jackson for Java this is configurable. Which one are u using? I guess it can be configured as well (Perhaps Json.NET?)
Upvotes: 2