使用 JSON.NET 序列化/反序列化动态属性名称

我有以下课程：

public class MyRequest
{
    public string Type {get;set;}
    public string Source {get;set;}
}

我想序列化/反序列化以下值Source来自名为值的 JSON 字段Type， 例如：

{
    "type": "bank",
    "bank": "Some value"
}

or

{
    "type": "card",
    "card": "Some value"
}

两者都绑定到Source财产。

您可以创建一个自定义JsonConverter https://www.newtonsoft.com/json/help/html/T_Newtonsoft_Json_JsonConverter.htm处理动态属性名称：

public class MyRequestConverter : JsonConverter
{
    public override bool CanConvert(Type objectType)
    {
        return objectType == typeof(MyRequest);
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        JObject jo = JObject.Load(reader);
        string type = (string)jo["type"];
        MyRequest req = new MyRequest
        {
            Type = type,
            Source = (string)jo[type ?? ""]
        };
        return req;
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        MyRequest req = (MyRequest)value;
        JObject jo = new JObject(
            new JProperty("type", req.Type),
            new JProperty(req.Type, req.Source));
        jo.WriteTo(writer);
    }
}

要使用转换器，请添加[JsonConverter]像这样属性到你的类：

[JsonConverter(typeof(MyRequestConverter))]
public class MyRequest
{
    public string Type { get; set; }
    public string Source { get; set; }
}

这是一个有效的往返演示：https://dotnetfiddle.net/o7NDTV https://dotnetfiddle.net/o7NDTV