JsonHelper

 1     static class JsonHelper
 2     {
 3         public static string ToJson(this object obj)
 4         {
 5             var str = JsonConvert.SerializeObject(obj, Formatting.Indented, new JsonSerializerSettings
 6             {
 7                 NullValueHandling = NullValueHandling.Ignore,
 8                 DateFormatString = "yyyy-MM-dd HH:mm:ss",
 9                 ReferenceLoopHandling = ReferenceLoopHandling.Ignore//循环引用
10             });
11             return str;
12         }
13 
14         public static T FromJson<T>(this string json) where T : class
15         {
16             return JsonConvert.DeserializeObject(json, typeof(T), new IsoDateTimeConverter
17             {
18                 DateTimeFormat = "yyyy-MM-dd HH:mm:ss"
19             }) as T;
20         }
21     }