json序列化与反序列化

 1 using System.Runtime.Serialization.Json;
 2 
 3 /// <summary>  
 4 /// 将对象转化为Json字符串   
 5 /// </summary>  
 6 /// <typeparam name="T">源类型</typeparam>  
 7 /// <param name="obj">源类型实例</param>  
 8 /// <returns>Json字符串</returns>  
 9 public static string GetJsonFromObj<T>(T obj)
10 {
11     DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(obj.GetType());
12     using (MemoryStream ms = new MemoryStream())
13     {
14         jsonSerializer.WriteObject(ms, obj);
15         return Encoding.UTF8.GetString(ms.ToArray());
16     }
17 }
18 
19 /// <summary>  
20 /// 将Json字符串转化为对象  
21 /// </summary>  
22 /// <typeparam name="T">目标类型</typeparam>  
23 /// <param name="strJson">Json字符串</param>  
24 /// <returns>目标类型的一个实例</returns>  
25 public static T GetObjFromJson<T>(string strJson)
26 {
27     T obj = Activator.CreateInstance<T>();
28     using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(strJson)))
29     {
30         DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(obj.GetType());
31         return (T)jsonSerializer.ReadObject(ms);
32     }
33 }