JavaScriptSerializer 序列化json 时间格式
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时间：2015年06月08日
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 = 1, Dt = DateTime.Now }; JavaScriptSerializer js = new JavaScriptSerializer(); string str = js.Serialize(m); str = Regex.Replace(str, @"\\/Date\((\d+)\)\\/", match => { DateTime dt = new DateTime(1970, 1, 1); dt = dt.AddMilliseconds(long.Parse(match.Groups[1].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(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; } /// <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[0].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/"}]"
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