JSON数据的两种读写方法

1、利用.NET自身的JavaScriptSerializer

需要添加System.Web.Extensions.dll

添加方法见：

http://blog.chinaunix.net/uid-25498312-id-5675200.html

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Script.Serialization;
namespace TestJSON
{
    class CustomData
    {
        public string Input;
        public string Output;
    }
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("-----------------------  Using .Net  JavaScriptSerializer api for JSON ------------------------\n");
            CustomData p = new CustomData() { Input = "stone", Output = "gold" };
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            var json = serializer.Serialize(p);
            Console.WriteLine(json);
            var p1 = serializer.Deserialize(json);
            Console.WriteLine(p1.Input + "=>" + p1.Output);
            // 确定指定的 System.Object 实例是否是相同的实例
            Console.WriteLine(ReferenceEquals(p, p1));
            Console.ReadLine();
        }
    }
}

上述结果同时证明了从p到p1是深拷贝。

2、利用Newtonsoft.Json.dll开源库

点击(此处)折叠或打开

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Script.Serialization;
namespace TestJSON
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("-----------------------  Using NewtonSoftJson api for JSON ------------------------\n");
            //匿名对象解析,uid=0即为整型，若uid="0"则为字符串
            var tempEntity = new { uid = 0, rid = 0, cmd = 0, commander = 0, target = 0 };
            // 序列化的后发送
            string jsonStr = JsonHelper.SerializeObject(tempEntity);
            // 收到后解析
            tempEntity = JsonHelper.DeserializeAnonymousType("{\"uid\":123,\"rid\":466,\"cmd\":4099,\"commander\":123,\"target\":666}", tempEntity);
            Console.WriteLine(tempEntity.uid);
            Console.ReadLine();
        }
    }
}

/* JasonHelper.cs文件： */
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using Newtonsoft.Json;

namespace TestJSON
{
    ///
    /// Json帮助类
    ///
    public class JsonHelper
    {
        ///
        /// 将对象序列化为JSON格式
        ///
        /// 对象
        /// json字符串
        public static string SerializeObject(object o)
        {
            string json = JsonConvert.SerializeObject(o);
            return json;
        }

        ///
        /// 解析JSON字符串生成对象实体
        ///
        /// 对象类型
        /// json字符串(eg.{"ID":"112","Name":"石子儿"})
        /// 对象实体
        public static T DeserializeJsonToObject(string json) where T : class
        {
            JsonSerializer serializer = new JsonSerializer();
            StringReader sr = new StringReader(json);
            object o = serializer.Deserialize(new JsonTextReader(sr), typeof(T));
            T t = o as T;
            return t;
        }


        ///
        /// 解析JSON数组生成对象实体集合
        ///
        /// 对象类型
        /// json数组字符串(eg.[{"ID":"112","Name":"石子儿"}])
        /// 对象实体集合
        public static List DeserializeJsonToList(string json) where T : class
        {
            JsonSerializer serializer = new JsonSerializer();
            StringReader sr = new StringReader(json);
            object o = serializer.Deserialize(new JsonTextReader(sr), typeof(List));
            List list = o as List;
            return list;
        }

        ///
        /// 反序列化JSON到给定的匿名对象.
        ///
        /// 匿名对象类型
        /// json字符串
        /// 匿名对象
        /// 匿名对象
        public static T DeserializeAnonymousType(string json, T anonymousTypeObject)
        {
            T t = JsonConvert.DeserializeAnonymousType(json, anonymousTypeObject);
            return t;
        }
    }
}

工程源码：
TestJSON.rar
Newtonsoft.Json.dll库：
Newtonsoft.rar

参考文献：

http://www.cnblogs.com/txw1958/archive/2012/08/01/csharp-json.html