JavaScriptSerializer和DataContractJsonSerializer的比较 一般情况下就用JavaScriptSerializer

JavaScriptSerializer

名称空间：

using System.Web.Script.Serialization; 不需要再手动添加引用

不支持支持序列化Dictionary类型

不需要手动设置每个字段的名称, 例如 ：

    [Serializable]

    public class Student

    {

        public string Name { get; set; }

        public int Age { get; set; }

        public List<Course> course { get; set; }

    }

 

 

 

DataContractJsonSerializer

名称空间:

using System.Runtime.Serialization.Json;需要手动添加引用  System.Runtime.Serialization.；

支持序列化Dictionary类型；

需要手动设置每个字段的名称，例如：

    [DataContract(Name="student")]

    public class Student

    {

          [DataMember(Name = "Name")]

        public string Name { get; set; }

          [DataMember(Name = "Age")]

        public int Age { get; set; }

          [DataMember(Name = "Course")]

        public List<Course> course { get; set; }

         

    }

 

 

===============

JsonAbout:

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Web.Script.Serialization; using System.Runtime.Serialization.Json;
namespace ConsoleApplicationTest {     public class JsonAbout     {         public static T Json2ModelJS<T>(string JsonStr)         {             JavaScriptSerializer jss = new JavaScriptSerializer();             T userJson = jss.Deserialize<T>(JsonStr);             return userJson;         }
        public static string Model2JsonJS<T>(T model)         {             JavaScriptSerializer jss = new JavaScriptSerializer();             string userJson = jss.Serialize(model);             return userJson;         }           public static T Json2Model<T>(string jsonString)         {             using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))             {                 return (T)new DataContractJsonSerializer(typeof(T)).ReadObject(ms);             }         }
        public static string Model2Json<T>(T jsonObject)         {             using (var ms = new MemoryStream())             {                 new DataContractJsonSerializer(typeof(T)).WriteObject(ms, jsonObject);                 return Encoding.UTF8.GetString(ms.ToArray());             }         }     } }

　　测试类：

public class JsonModelDemo     {         public void Show()         {             string jsonA = "{\"IDA\":1,\"NameA\":\"A\",\"B\":{\"IDB\":2,\"NameB\":\"B\"}}";             string jsonB = "{\"Msg\":\"Test\",\"Data\":{\"IDA\":1,\"NameA\":\"A\",\"B\":[{\"IDB\":2,\"NameB\":\"B1\"},{\"IDB\":3,\"NameB\":\"B2\"}]}}";             Console.WriteLine("DataContractJsonSerializer:");             A a1 = JsonAbout.Json2Model<A>(jsonA);             B b1 = JsonAbout.Json2Model<B>(jsonA);             A a2 = JsonAbout.Json2Model<A>(jsonB);             B b2 = JsonAbout.Json2Model<B>(jsonB);             Output(a1);             Output(b1);             Output(a2);             Output(b2);
            Console.WriteLine("JavaScriptSerializer:");             A a3 = JsonAbout.Json2ModelJS<A>(jsonA);             B b3 = JsonAbout.Json2ModelJS<B>(jsonA);             A a4 = JsonAbout.Json2ModelJS<A>(jsonB);             B b4 = JsonAbout.Json2ModelJS<B>(jsonB);             Output(a3);             Output(b3);             Output(a4);             Output(b4);                   }
        private void Output(A a)         {             Console.WriteLine("IDA:"+a.IDA + ", NameA:" + a.NameA);             if (a.b != null)             {                 Console.WriteLine("B:"+a.b.IDB+","+a.b.NameB);             }         }         private void Output(B b)         {             Console.WriteLine("IDB:" + b.IDB + ", NameB:" + b.NameB);         }     }     public class A     {         public int IDA { get; set; }
        public string NameA { get; set; }
        public B b { get; set; }     }
    public class B     {         public int IDB { get; set; }
        public string NameB { get; set; }     }

　　输出：

DataContractJsonSerializer: IDA:1, NameA:A IDB:0, NameB: IDA:0, NameA: IDB:0, NameB: JavaScriptSerializer: IDA:1, NameA:A B:2,B IDB:0, NameB: IDA:0, NameA: IDB:0, NameB:

　　结论：JavaScriptSerializer可以识别关联的实体，其他的待验证。