.net——序列化與還原序列化中對日期時間的處理

承接上篇，現在我在類中加入一個日期時間類型的欄位：

public  class Student    {       public string StudentId { get; set; }       public string Name { get; set; }       public int age { get; set; }       public string Address { get; set; }       public DateTime Birthday { get; set; }    }

如果不對birthday這個類型處理的話，序列化之後就會出現這個問題：

{"Address":"北京朝陽區","Birthday":"\/Date(1434943392228+0800)\/","Name":"水田如雅","StudentId":"110","age":20}

現在我們在原來的方法上面進行一個改進：

 public static class JsonConvert    {        /// <summary>        /// Converts the obj to json.        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="t">The t.</param>        /// <returns>System.String.</returns>        /// <remarks>Editor：v-liuhch CreateTime：2015/6/21 21:40:55</remarks>        public static string ConvertObjToJson<T>(T t)        {            DataContractJsonSerializer ser = new DataContractJsonSerializer(t.GetType());            try         {                    using (MemoryStream ms=new MemoryStream())                    {                        ser.WriteObject(ms,t);                        string strJson=Encoding.UTF8.GetString(ms.ToArray());                        //替換Json的date字串                        string p = @"\\/Date\((\d+)\+\d+\)\\/";                        MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDataToDateString);                        Regex reg = new Regex(p);                        strJson = reg.Replace(strJson, matchEvaluator);                        return strJson;                     }        }        catch (IOException)        {                //自己處理異常吧        return null;        }                            }        /// <summary>        /// Jsons the deserialize.        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="strJson">The STR json.</param>        /// <returns>``0.</returns>        /// <remarks>Editor：v-liuhch CreateTime：2015/6/21 21:46:37</remarks>        public static T JsonDeserialize<T>(string strJson)            where T:class //約束T為class,也可以放寬類型，這裡只是個例子，寫著玩兒的，歐巴們，此處可改        {            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));            try            {                //將"yyyy-MM-dd HH:mm:ss"格式的字串轉為"\/Date(1294499956278+0800)\/"格式                string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";                MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertDateStringToJsonDate);                Regex reg = new Regex(p);                strJson = reg.Replace(strJson, matchEvaluator);                using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(strJson)))                {                    T obj = ser.ReadObject(ms) as T;                    return obj;                }            }            catch (IOException e)            {                //自己處理異常吧                return null;            }                   }        /// <summary>        /// Converts the json data to date string.        /// </summary>        /// <param name="m">The m.</param>        /// <returns>System.String.</returns>        /// <remarks>Editor：v-liuhch CreateTime：2015/6/22 11:39:18</remarks>        private static string ConvertJsonDataToDateString(Match m) {            string result = string.Empty;            DateTime dt = new DateTime(1970, 1, 1);            dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value));            dt = dt.ToLocalTime();//轉換為本地時間            result = dt.ToString("yyyy-MM-dd HH:mm:ss");            return result;                }        /// <summary>        /// Converts the date string to json date.        /// </summary>        /// <param name="m">The m.</param>        /// <returns>System.String.</returns>        /// <remarks>Editor：v-liuhch CreateTime：2015/6/22 11:39:15</remarks>        private static string ConvertDateStringToJsonDate(Match m)         {            string result = string.Empty;             DateTime dt = DateTime.Parse(m.Groups[0].Value);             dt = dt.ToUniversalTime();              TimeSpan ts = dt - DateTime.Parse("1970-01-01");            result = string.Format("\\/Date({0}+0800)\\/",ts.TotalMilliseconds);            return result;                }              }

當然，在序列化的時候，我們可以不對日期時間做單獨處理，拿到前台JS之後，再對資料進行一個整合過濾，這樣，就不會固定死日期時間的返回格式，感覺這樣比在幕後處理好。

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