使用Json序列化/反序列化TimeSpan

using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

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

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        var token = JToken.Load(reader);
        return TimeSpan.Parse(token.Value<string>());
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        writer.WriteValue(((TimeSpan)value).ToString());
    }
}

using Newtonsoft.Json;

public class MyClass
{
    [JsonConverter(typeof(TimeSpanConverter))]
    public TimeSpan MyTimeSpan { get; set; }
}

var myObject = new MyClass();
myObject.MyTimeSpan = TimeSpan.FromSeconds(123);

var json = JsonConvert.SerializeObject(myObject);

var deserializedObject = JsonConvert.DeserializeObject<MyClass>(json);