Newtonsoft.Json部分操作系统不支持解决

ASP.NET MVC中Json(value)方法转换成JsonResult格式的数据异步返回给JQuery进行处理，很爽，结果最近不用 ASP.NET MVC开发应用了，异步地区调用涉及到Json数据的获取发现居然没有好的Json格式数据转换方法像过去一样简单调用 很是不爽，搜了下找到个利用System.Runtime.Serialization.Json转换数据的方法，可以转换为JQuery可以识别的格式，不过 调用过程中发现它将实体类的属性名称转换成:”<属性名>k__BackingField ” 这种格式，调用起来很不方便，不过还是将这种方法编写的助手类贴出来： 注意需要引用： 首先，当然是项目是3.5的， 只引用一个System.Runtime.Serialization 是不够的， 还要添加 System.ServiceModel System.ServiceModel.Web 的引用，OK 代码如下：

 

/// <summary>/// FileName: JSONHelper.cs/// CLRVersion: 2.0.50727.3623/// Author: Mikel/// Corporation:/// Description:JSON格式数据转换助手类/// 1.将List<T>类型的数据转换为JSON格式/// 2.将T类型对象转换为JSON格式对象/// 3.将JSON格式对象转换为T类型对象/// DateTime: 2011-09-13 14:11:34/// </summary>public static class JSONHelper{    /// <summary>    /// 转换对象为JSON格式数据    /// </summary>    /// <typeparam name="T">类</typeparam>    /// <param name="obj">对象</param>    /// <returns>字符格式的JSON数据</returns>    public static string GetJSON<T>(object obj)    {        string result = String.Empty;        try        {            System.Runtime.Serialization.Json.DataContractJsonSerializer serializer =            new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));            using (System.IO.MemoryStream ms = new System.IO.MemoryStream())            {                serializer.WriteObject(ms, obj);                result = System.Text.Encoding.UTF8.GetString(ms.ToArray());            }        }        catch (Exception ex)        {            throw ex;        }        return result;    }    /// <summary>    /// 转换List<T>的数据为JSON格式    /// </summary>    /// <typeparam name="T">类</typeparam>    /// <param name="vals">列表值</param>    /// <returns>JSON格式数据</returns>    public static string JSON<T>(List<T> vals)    {        System.Text.StringBuilder st = new System.Text.StringBuilder();        try        {            System.Runtime.Serialization.Json.DataContractJsonSerializer s = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));            foreach (T city in vals)            {                using (System.IO.MemoryStream ms = new System.IO.MemoryStream())                {                    s.WriteObject(ms, city);                    st.Append(System.Text.Encoding.UTF8.GetString(ms.ToArray()));                }            }        }        catch (Exception ex)        {            throw ex;        }        return st.ToString();    }    /// <summary>    /// JSON格式字符转换为T类型的对象    /// </summary>    /// <typeparam name="T"></typeparam>    /// <param name="jsonStr"></param>    /// <returns></returns>    public static T ParseFormByJson<T>(string jsonStr)    {        T obj = Activator.CreateInstance<T>();        using (System.IO.MemoryStream ms =        new System.IO.MemoryStream(System.Text.Encoding.UTF8.GetBytes(jsonStr)))        {            System.Runtime.Serialization.Json.DataContractJsonSerializer serializer =            new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));            return (T)serializer.ReadObject(ms);        }    }}

还是觉得ASP.NET MVC的Json转换比较地道，于是翻找其源码，发现是利用的.net Framework 3.5特有的 c:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Extensions.dll 实现的Json数据格式转换，实现代码如下：  

namespace System.Web.Mvc {    using System;    using System.Text;    using System.Web;    using System.Web.Script.Serialization;    [AspNetHostingPermission(System.Security.Permissions.SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]    [AspNetHostingPermission(System.Security.Permissions.SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]    public class JsonResult : ActionResult {        public Encoding ContentEncoding {            get;            set;        }        public string ContentType {            get;            set;        }        public object Data {            get;            set;        }        public override void ExecuteResult(ControllerContext context) {            if (context == null) {                throw new ArgumentNullException("context");            }            HttpResponseBase response = context.HttpContext.Response;            if (!String.IsNullOrEmpty(ContentType)) {                response.ContentType = ContentType;            }            else {                response.ContentType = "application/json";            }            if (ContentEncoding != null) {                response.ContentEncoding = ContentEncoding;            }            if (Data != null) {#pragma warning disable 0618                JavaScript.Serializer serializer = new JavaScript.Serializer();                response.Write(serializer.Serialize(Data));#pragma warning restore 0618            }        }    }}

看到这大家应该明白了，原来.net Framework3.5已经做好了转换的方法，只需要调用即可，不过提醒大家注意： 一定要先引用c:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Web.Extensions.dll 才能使用JavaScriptSerializer serializer = new JavaScriptSerializer(); 切记！切记！