（转）JavaScriptSerializer,DataContractJsonSerializer解析JSON字符串功能小记

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。

转： http://artwl.cnblogs.com