如何反序列化JSON字符串不列出 <object> 在C＃中

Question

i'm working with Vk.com api, in particular with this json string:

{
"response":
[338775,
{"aid":108787020,
"owner_id":2373452,
"artist":" Moby",
"title":"Flowers",
"duration":208,
"url":"https:\/\/cs1-50v4.vk-cdn.net\/p3\/c762273870cc49.mp3?extra=t9I-RMkSlAHkhe8JtOUUZBTZqkFVE9MJ_Q-TPmOhxPHTfHazQWEYBf4LqrOY64xLX9AuzaKwvLo4PECSFiHyWM53WMDWVcBAZVT5jlIbZ9X8ag","lyrics_id":"6060508",
"genre":22}
]
}

I have a class for parsing data:

public class AlbumResponse
    {
        [JsonProperty("artist")]
        public string artist { get; set; }
        [JsonProperty("title")]
        public string title { get; set; }
        [JsonProperty("duration")]
        public string duration { get; set; }
        [JsonProperty("url")]
        public string url { get; set; }
    }

And List for deserialization:

public class VkAlbum
{
    public List<AlbumResponse> response { get; set; }
}

Than I use

var album = JsonConvert.DeserializeObject<VkAlbum>(responseText);

BUT it doesn't work (A first chance exception of type 'Newtonsoft.Json.JsonSerializationException') because of "338775" after "response". So how can I deserialize it without using

 public List<object> response { get; set; }

instead of my AlbumResponse class?

Answer 1

A primitive JSON sanitation for your disposal. Not the most elegant code, but i'm sure you can take it from here.

responseText = Regex.Replace(responseText, "[\t|\r\n]", "");
if (responseText.IndexOf("response\": [") != -1)
{
    int start = responseText.IndexOf('[') + 1;
    int end = responseText.IndexOf(',', start);
    responseText = responseText.Substring(0, start) + responseText.Substring(end + 1);
}
var album = JsonConvert.DeserializeObject<VkAlbum>(responseText);

Answer 2

technically json response is not equivalent to C# List<AlbumResponse> . JSON array allows mixed types so essentially it can contains numbers and other nested objects, in your case AlbumResponse .

you can avoid exception by using List<object> and checking it's first element if it's number, if it is, ignore or do whatever you want to do and typecast 2nd element in list to AlbumResponse .

eg

var res = response [1] as AlbumResponse;
if(res!=null)
{
    // do something interesting...