如何限制JSON.Net中的日期格式?

一种方法是组合设置DateParseHandling以不转换DateTime字符串,然后为DateTime设置一个自定义JsonConverter

一个非常简单的Datetime转换器,如果不是UTC Datetime,它会崩溃

    public class DateTimeConverter : JsonConverter<DateTime>
    {
        public override void WriteJson(JsonWriter writer, DateTime value, JsonSerializer serializer)
        {
            writer.WriteValue(value.ToString("u"));
        }

        public override DateTime ReadJson(JsonReader reader, Type objectType, DateTime existingValue, bool hasExistingValue, JsonSerializer serializer)
        {
            string s = (string)reader.Value;
            return DateTime.ParseExact(s,"u", CultureInfo.InvariantCulture);
        }
    }

那么反序列化代码如下所示:

        var settings = new JsonSerializerSettings()
        {
            DateParseHandling = DateParseHandling.None,
            Converters = new List<JsonConverter>()
            {
                new DateTimeConverter()
            }
        };

        var deserialized = JsonConvert.DeserializeObject<MyDate>(json, settings);