Question

在将Cson数据转换为C＃中的自定义模型时，我被困住了。 json数据的结构如下：

{
  "id": "100002231955291", 
  "albums": {
    "data": [
      {
        "id": "103570756393989", 
        "name": "xyz",
        "photos": {
         "data": [
            {
                  "id": "707563939dsf89", 
                  "picture": "htp:// ssdsome data"
            }, 
            {
                   "id": "7075dfsd6393989", 
                   "picture": "htp:// ssdsome data"
            },
............
.....................   .. and so on    ......

我尝试使用代码反序列化上面的json数据：

var parsed = JsonConvert.DeserializeObject<FacebookModel>(data.ToString());

但问题是rootObject还包含一些无法转换（反序列化）的Json数组。我的模型（poco类）是：

public class FacebookModel
        {
            public string id { get; set; }
            List<AlbumModel> albums { get; set; }
        }

        public class AlbumModel
        {
            public string id { get; set; }
            public string name { get; set; }
            public List<PictureModel> photos { get; set; }
        }

        public class PictureModel
        {
             public string id { get; set; }
             public string picture { get; set; }
        }

错误：

Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1[Bricks.Common.CustomModels.PictureModel]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.
To fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.

任何帮助将不胜感激。感谢

Answer 1

albums和photos实际上是对象，而不是数组。

类似的东西：

public class FacebookModel
{
    public string id { get; set; }
    public AlbumModel albums { get; set; }
}

public class AlbumModel
{
    public List<AlbumData> data {get;set;}
}

public class AlbumData
{
    public string id { get; set; }
    public string name { get; set; }
    public PictureModel photos { get; set; }
}

public class PictureModel
{
    public List<PictureData> data {get;set;}
}

public class PictureData
{
    public string id { get; set; }
    public string picture { get; set; }
}

等等。

Answer 2

此方法适用于任何复杂对象：

样品用法：
var complexObject = GetObjectFromJson＆lt; YourComplexObject＆gt;（jsonString，typeof（YourComplexObject））;

   using System.Runtime.Serialization.Json;

   public static T GetObjectFromJson<T>(string jsonString, Type type)
    {
        var dcSerializer = new DataContractJsonSerializer(type);
        using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))
        {
            return (T)dcSerializer.ReadObject(stream);
        }
    }

将复杂的json对象反序列化为自定义数据模型c＃

2 个答案: