解决.net core 3.1 json日期带T的问题

添加一个扩展类  

public class DatetimeJsonConverter : JsonConverter<DateTime>
    {
        public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
        {
            if (reader.TokenType == JsonTokenType.String)
            {
                if (DateTime.TryParse(reader.GetString(), out DateTime date))
                    return date;
            }
            return reader.GetDateTime();
        }

        public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
        {
            writer.WriteStringValue(value.ToString("yyyy-MM-dd HH:mm:ss"));
        }
    }

//最后在容器中注入下 Startup.cs

            services.AddControllersWithViews().AddJsonOptions(options =>
            {
                options.JsonSerializerOptions.Converters.Add(new DatetimeJsonConverter());
            });