JavaScriptSerializer 序列化json 时间格式

利用JavaScriptSerializer 序列化json 时间格式，得到的DateTime值值显示为“/Date(700000+0500)/”形式的JSON字符串，显然要进行转换

1.利用字符串直接替换

Model m = new Model { Id = , Dt = DateTime.Now };
        JavaScriptSerializer js = new JavaScriptSerializer();
        string str = js.Serialize(m);
        str = Regex.Replace(str, @"\\/Date\((\d+)\)\\/", match =>
        {
            DateTime dt = new DateTime(, , );
            dt = dt.AddMilliseconds(long.Parse(match.Groups[].Value));
            dt = dt.ToLocalTime();
           return dt.ToString("yyyy-MM-dd HH:mm:ss");
        });
        Response.Write(str);
//{"Id":1,"Dt":"2011-08-17 17:38:47"} 

2.JsonHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Runtime.Serialization.Json;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
/// <summary>
/// JSON序列化和反序列化辅助类
/// </summary>
public class JsonHelper
{
     /// <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+/)///"; /*////Date/((([/+/-]/d+)|(/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;
    }
 }

List<T>序列化:

 1: List<Person> list = new List<Person>()

   2: {

   3:     new Person(){ Name="张三", Age=28},

   4:     new Person(){ Name="李四", Age=25}

   5: };

   6:  

   7: string jsonString = JsonHelper.JsonSerializer<List<Person>>(list);

序列化结果：

"[{/"Age/":28,/"Name/":/"张三/"},{/"Age/":25,/"Name/":/"李四/"}]"

    字典不能直接用于JSON，Dictionary字典转化为JSON并不是跟原来的字典格式一致，而是形式以Dictionary的Key作为名称”Key“的值，以Dictionary的Value作为名称为”Value“的值 。如：

   1: Dictionary<string, string> dic = new Dictionary<string, string>();

   2: dic.Add("Name", "张三");

   3: dic.Add("Age", "28");

   4:  

   5: string jsonString = JsonHelper.JsonSerializer < Dictionary<string, string>>(dic);

序列化结果：

   1: "[{/"Key/":/"Name/",/"Value/":/"张三/"},{/"Key/":/"Age/",/"Value/":/"28/"}]"