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 0618JavaScript.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！