C# 使用JSON对数据序列化和反序列化.

public static class JsonHelper

    {

        /// <summary>

        /// JSON序列化

        /// </summary>

        public static string JsonSerializer<T>(T t)

        {

            //so

            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

            const string p = @"\\/Date\((\d+)\+\d+\)\\/";

            MatchEvaluator matchEvaluator = ConvertJsonDateToDateString;

            Regex reg = new Regex(p);

            jsonString = reg.Replace(jsonString, matchEvaluator);

            return jsonString;

        }

        /// <summary>

        /// 从一个对象信息生成Json串

        /// </summary>

        /// <param name="obj">转换对象</param>

        /// <typeparam name="T">对象类型</typeparam>

        /// <returns></returns>

        public static string ToJson<T>(this T obj)

        {

            var fullName = typeof (T).FullName;

            if (fullName != null && fullName.Contains("<>f__AnonymousType"))

            {

                //匿名类型

                var serializer = new System.Web.Script.Serialization.JavaScriptSerializer();

                return serializer.Serialize(obj);

            }

            else

            {

                var serializer = new DataContractJsonSerializer(typeof(T));

                string json;

                using (MemoryStream stream = new MemoryStream())

                {

                    serializer.WriteObject(stream, obj);

                    json = Encoding.UTF8.GetString(stream.ToArray());

                    stream.Close();

                }

                return json;

            }

        }



        /// <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

            const string p = @"\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}";

            MatchEvaluator 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)

        {

            DateTime dt = new DateTime(1970, 1, 1);

            dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value));

            dt = dt.ToLocalTime();

            string 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)

        {

            DateTime dt = DateTime.Parse(m.Groups[0].Value);

            dt = dt.ToUniversalTime();

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

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

            return result;

        }

    }

原文地址http://blog.csdn.net/allsharps/article/details/7357446