Json.NET:反序列化嵌套字典 [英] Json.NET: Deserializing nested dictionaries

问题描述

将对象反序列化为 Dictionary (JsonConvert.DeserializeObject>(json)) 时，嵌套对象将反序列化为 JObject s.是否可以强制将嵌套对象反序列化为 Dictionary s?

When deserializing an object to a Dictionary (JsonConvert.DeserializeObject<IDictionary<string,object>>(json)) nested objects are deserialized to JObjects. Is it possible to force nested objects to be deserialized to Dictionarys?

推荐答案

我找到了一种方法，通过提供 CustomCreationConverter 将所有嵌套对象转换为 Dictionary> 实施:

I found a way to convert all nested objects to Dictionary<string,object> by providing a CustomCreationConverter implementation:

class MyConverter : CustomCreationConverter<IDictionary<string, object>>
{
    public override IDictionary<string, object> Create(Type objectType)
    {
        return new Dictionary<string, object>();
    }

    public override bool CanConvert(Type objectType)
    {
        // in addition to handling IDictionary<string, object>
        // we want to handle the deserialization of dict value
        // which is of type object
        return objectType == typeof(object) || base.CanConvert(objectType);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        if (reader.TokenType == JsonToken.StartObject
            || reader.TokenType == JsonToken.Null)
            return base.ReadJson(reader, objectType, existingValue, serializer);

        // if the next token is not an object
        // then fall back on standard deserializer (strings, numbers etc.)
        return serializer.Deserialize(reader);
    }
}

class Program
{
    static void Main(string[] args)
    {
        var json = File.ReadAllText(@"c:	est.json");
        var obj = JsonConvert.DeserializeObject<IDictionary<string, object>>(
            json, new JsonConverter[] {new MyConverter()});
    }
}

文档:CustomCreationConverter with Json.NET

Documentation: CustomCreationConverter with Json.NET

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