C# json类 泛型转化

using System;using System.Collections.Generic;using System.Web;using System.Runtime.Serialization.Json;using System.Linq;using System.Text;using System.IO;using System.Text.RegularExpressions;namespace JsonHelper{    public class JsonClass    {        /// <summary>        /// Json序列化        /// </summary>        /// <typeparam name="T">对象类型</typeparam>        /// <param name="t">序列化对象</param>        /// <returns></returns>        public static string JsonSerializer<T>(T t)        {            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));            MemoryStream ms = new MemoryStream();            ser.WriteObject(ms, t);            string jsonString = Encoding.UTF8.GetString(ms.ToArray());            ms.Close();            string p = @"\\/Date\((\d+)\+\d+\)\\/";            MatchEvaluator matchEvaluator = new MatchEvaluator(ConvertJsonDateToDateString);            Regex reg = new Regex(p);            jsonString = reg.Replace(jsonString, matchEvaluator);            return jsonString;        }        /// <summary>        /// Json反序列化        /// </summary>        /// <typeparam name="T">对象类型</typeparam>        /// <param name="jsonString">反序列化json字符串</param>        /// <returns></returns>        public static T JsonDeserialize<T>(string jsonString)        {            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);            jsonString = reg.Replace(jsonString, matchEvaluator);            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T));            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString));            T obj = (T)ser.ReadObject(ms);            return obj;        }        private static string ConvertJsonDateToDateString(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();            result = dt.ToString("yyyy-MM-dd HH:mm:ss");            return result;        }        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;        }    }}