Question

我需要将类型为Dictionary的JSON字典反序列化为List（List），我正在使用JSON.Net来实现此目的。肯定它是一个令人惊叹的图书馆就是这样，我有点卡住了！

我正在订阅一些API，响应正如您所见：

    "team_details": {
                "0": {
                    "index": 1,
                    "team_id": "1..",
                    "team_name": "Research Team",
                    "team_url": "...",
                    "role": "Administrator"
                },
                "1": {
                    "index": 2,
                    "team_id": "2..",
                    "team_name": "WB Team",
                    "team_url": "...",
                    "role": "User"
                }
}

我需要使用它将其转换为List<Team>团队：

Class Teams{

 public int Index{get;set;}

 public String TeamName{get;set;}

...
}

Answer 1

最简单的方法是反序列化为Dictionary<string, Team>，然后在需要时使用dictionary.Values.ToList()将值放入列表中。

但是，如果您真的希望在类定义中使用List<Team>，则可以在反序列化期间使用自定义JsonConverter进行转换。

public class TeamListConverter : JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return (objectType == typeof(List<Team>));
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        JToken token = JToken.Load(reader);
        return token.Values().Select(v => v.ToObject<Team>()).ToList();
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        throw new NotImplementedException();
    }
}

演示：

class Program
{
    static void Main(string[] args)
    {
        string json = @"
        {
            ""team_details"": {
                ""0"": {
                    ""index"": 1,
                    ""team_id"": ""1.."",
                    ""team_name"": ""Research Team"",
                    ""team_url"": ""..."",
                    ""role"": ""Administrator""
                },
                ""1"": {
                    ""index"": 2,
                    ""team_id"": ""2.."",
                    ""team_name"": ""WB Team"",
                    ""team_url"": ""..."",
                    ""role"": ""User""
                }
            }
        }";

        RootObject root = JsonConvert.DeserializeObject<RootObject>(json);

        foreach (Team team in root.Teams)
        {
            Console.WriteLine(team.TeamName);
        }
    }
}

public class RootObject
{
    [JsonProperty("team_details")]
    [JsonConverter(typeof(TeamListConverter))]
    public List<Team> Teams { get; set; }
}

public class Team
{
    [JsonProperty("index")]
    public int Index { get; set; }
    [JsonProperty("team_id")]
    public string TeamId { get; set; }
    [JsonProperty("team_name")]
    public string TeamName { get; set; }
    [JsonProperty("team_url")]
    public string TeamUrl { get; set; }
    [JsonProperty("role")]
    public string Role { get; set; }
}

输出：

Research Team
WB Team

将JSON字典<int，customtype>反序列化为List <customtype> </customtype> </int，customtype>

1 个答案: