using System.IO;

using System.Linq;

using System.Runtime.Serialization.Json;

using System.Text;

using System.Text.RegularExpressions;

using System.Web;

namespace MVCEFDbFirstTutotrials.Common

{

    public class JsonHelper

    {

        public static void Test()

        {

            Product product = new Product()

            {

                Name = "",

                Description = "",

                Price = ,

                Color = "color",

                PublishOn = DateTime.Now

            };

            string jsonString = JsonSerializer<Product>(product);

            Product product1 = JsonDeserialize<Product>(jsonString);

        }

        /// <summary>

        /// JSON序列化

        /// </summary>

        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();

            //替换Json的Date字符串

            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>

        public static T JsonDeserialize<T>(string jsonString)

        {

            //将"yyyy-MM-dd HH:mm:ss"格式的字符串转为"//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);

            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;

        }

        /// <summary>

        /// 将Json序列化的时间由/Date(1294499956278+0800)转为yyyy-MM-dd HH:mm:ss字符串

        /// </summary>

        private static string ConvertJsonDateToDateString(Match m)

        {

            string result = string.Empty;

            DateTime dt = new DateTime(, , );

            dt = dt.AddMilliseconds(long.Parse(m.Groups[].Value));

            dt = dt.ToLocalTime();

            result = dt.ToString("yyyy-MM-dd HH:mm:ss");

            return result;

        }

        /// <summary>

        /// 将时间字符串转为Json时间

        /// </summary>

        private static string ConvertDateStringToJsonDate(Match m)

        {

            string result = string.Empty;

            DateTime dt = DateTime.Parse(m.Groups[].Value);

            dt = dt.ToUniversalTime();

            TimeSpan ts = dt - DateTime.Parse("1970-01-01");

            result = string.Format("\\/Date({0}+0800)\\/", ts.TotalMilliseconds);

            return result;

        }

    }  

}

function ChangeDateFormat(jsondate) {

        jsondate = jsondate.replace("/Date(", "").replace(")/", "");

        if (jsondate.indexOf("+") > ) {

            jsondate = jsondate.substring(, jsondate.indexOf("+"));

        }

        else if (jsondate.indexOf("-") > ) {

            jsondate = jsondate.substring(, jsondate.indexOf("-"));

       }        

       var date = new Date(parseInt(jsondate, ));

       var month = date.getMonth() +  <  ? "" + (date.getMonth() + ) : date.getMonth() + ;

       var currentDate = date.getDate() <  ? "" + date.getDate() : date.getDate();

       return date.getFullYear() + "-" + month + "-" + currentDate;

   }