.NET JSON对象序列化和反序列化
昨晚和几个哥们打字牌，打了个通宵，早上睡了2个多小时，发现精神还很抖擞(要是写代码有这么给力...哎。碉堡了)。闲来无事，打开VS，coding总结了下.NET序列化：
序列化定义:序列化是将对象状态转换为可保持或传输的格式的过程。与序列化相对的是反序列化，它将流转换为对象。这两个过程结合起来，可以轻松地存储和传输数据。
下面要介绍的是.net提供的序列化对象DataContractJsonSerializer,他主要是用于将对象转化为JSON格式数据以及将JSON反序列化为对象。
直接上代码吧，可以直接在控制台打印出结果：
1 class Program 2 { 3 static void Main(string[] args) 4 { 5 Console.WriteLine("============================序列化单个对象为JSON格式======================================================"); 6 var jsonObj = GetUser().ToJsonString(); 7 Console.WriteLine(jsonObj + " "); 8 9 Console.WriteLine("============================序列化集合对象为JSON格式======================================================"); 10 var jsonListObj = GetList().ToJsonString(); 11 Console.WriteLine(jsonListObj + " "); 12 13 Console.WriteLine("============================序列化字符串集合======================================================"); 14 var jsonStrObj = GetString().ToJsonString(); 15 Console.WriteLine(jsonStrObj + " "); 16 17 Console.WriteLine("============================构建一个JSON对象，反序列化为User对象==================================="); 18 //构建JSON对象 19 string str = "{"Description":"少林袈裟旗舰店店长","Id":"1","Name":"少林扫地神僧"}"; 20 var user = str.ToJsonObject<User>(); 21 var entityObj = string.Format("json format str convert to user object:Id={0},Name={1},Description={2}", user.Id, user.Name, user.Description); 22 Console.WriteLine(entityObj); 23 Console.ReadKey(); 24 } 25 26 public static User GetUser() 27 { 28 User user = new User() 29 { 30 Id = 1, 31 Name = "无崖子", 32 Description = "逍遥派掌门" 33 }; 34 return user; 35 } 36 37 public static List<User> GetList() 38 { 39 List<User> list = new List<User>() { 40 new User(){ Id=1,Name="丁春秋", Description="星宿派掌门"}, 41 new User(){ Id=2,Name="庄聚贤", Description="无所事事的帅哥"}, 42 new User(){ Id=3,Name="段正淳", Description="风流倜傥大理王爷"}}; 43 return list; 44 } 45 46 47 public static IList<string> GetString() 48 { 49 IList<string> strList = new List<string>(); 50 strList.Add("乔峰"); 51 strList.Add("段誉"); 52 strList.Add("虚竹"); 53 return strList; 54 } 55 } 56 57 58 public class User 59 { 60 public int Id { get; set; } 61 62 public string Name { get; set; } 63 64 public string Description { get; set; } 65 } 66 67 68 69 public static class StringExtensions 70 { 71 /// <summary> 72 /// 将对象转化为Json字符串 73 /// </summary> 74 /// <typeparam name="T">对象类型</typeparam> 75 /// <param name="instanse">对象本身</param> 76 /// <returns>JSON字符串</returns> 77 public static string ToJsonString<T>(this T instanse) 78 { 79 try 80 { 81 DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(T)); 82 using (MemoryStream ms = new MemoryStream()) 83 { 84 js.WriteObject(ms, instanse); 85 ms.Flush(); 86 ms.Seek(0, SeekOrigin.Begin); 87 StreamReader sr = new StreamReader(ms); 88 return sr.ReadToEnd(); 89 } 90 } 91 catch 92 { 93 return String.Empty; 94 } 95 } 96 97 /// <summary> 98 /// 将字符串转化为JSON对象，如果转换失败，返回default(T) 99 /// </summary> 100 /// <typeparam name="T">对象类型</typeparam> 101 /// <param name="s">字符串</param> 102 /// <returns>转换值</returns> 103 public static T ToJsonObject<T>(this string s) 104 { 105 try 106 { 107 DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(T)); 108 using (MemoryStream ms = new MemoryStream()) 109 { 110 StreamWriter sw = new StreamWriter(ms); 111 sw.Write(s); 112 sw.Flush(); 113 ms.Seek(0, SeekOrigin.Begin); 114 return (T)js.ReadObject(ms); 115 } 116 } 117 catch 118 { 119 return default(T); 120 } 121 } 122 }
运行结果：