/// <summary>

        /// 对象转Json字符串

        /// </summary>

        /// <param name="obj"></param>

        /// <param name="isCamel"></param>

        /// <returns></returns>

        public static string ToJsonString(object obj, bool isCamel = false)

        {

            var settings = new JsonSerializerSettings

            {

                DateFormatString = "yyyy-MM-dd HH:mm:ss",

                ReferenceLoopHandling = ReferenceLoopHandling.Ignore

            };

            if (isCamel)

            {

                settings.ContractResolver = new CamelCasePropertyNamesContractResolver();

            }

            return JsonConvert.SerializeObject(obj, settings);

        } /// <summary>

        /// Jons字符串转对象

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="jsonString"></param>

        /// <returns></returns>

        public static T ToObject<T>(string jsonString)

        {

            return JsonConvert.DeserializeObject<T>(jsonString);

        }

        public static string ToJson(this object obj, bool isCamel = false)

        {

            var settings = new JsonSerializerSettings

            {

                DateFormatString = "yyyy-MM-dd HH:mm:ss",

                ReferenceLoopHandling = ReferenceLoopHandling.Ignore

            };

            if (isCamel)

            {

                settings.ContractResolver = new CamelCasePropertyNamesContractResolver();

            }

            return JsonConvert.SerializeObject(obj, settings);

        }