使用Newtonsoft.json 解决 Asp.Net MVC DateTime类型数据Json格式化问题

解决思路

众所周知，MVC中调用的微软的组件JavaScriptSerialer...，格式DateTime类型数据需要在客户端专门解。

还知道，NewtonSoft.json可以“正确”的格式化DateTime类型的数据。

但是，如果在MVC中使用NewtonSoft.json的话，则需要调用Controller.Content（），返回的为字符串，客户端还要做转换。

而，Action返回的结果都是JsonResult。

于是，我用NewtonSoft.json的方法封装了一个NewtonJsonReuslt的类型，供Controller调用，具体的参考的MVC JsonResult的源码，没有技术含量。

代码部分

using System.Web.Mvc;
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;

namespace System.Web.Mvc
{
    public class NewtonJsonResult : JsonResult
    {
        public JsonSerializerSettings JsonSerializerSettings { get; set; }
        public NewtonJsonResult()
        {
            this.JsonRequestBehavior = JsonRequestBehavior.DenyGet;
        }
        public NewtonJsonResult(object obj)
        {
            this.JsonRequestBehavior = JsonRequestBehavior.DenyGet;
            this.Data = obj;
        }
        public NewtonJsonResult(object obj,JsonSerializerSettings jsonSerializerSettings)
        {
            this.JsonRequestBehavior = JsonRequestBehavior.DenyGet;
            this.Data = obj;
            this.JsonSerializerSettings = jsonSerializerSettings;
        }

        public override void ExecuteResult(ControllerContext context)
        {
            if (context == null)
            {
                throw new ArgumentNullException("context");
            }
            if ((this.JsonRequestBehavior == JsonRequestBehavior.DenyGet) && (string.Equals(context.HttpContext.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase)))
            {
                throw new InvalidOperationException("改方法当前不允许使用Get");
            }
            HttpResponseBase response = context.HttpContext.Response;
            if (!string.IsNullOrEmpty(this.ContentType))
            {
                response.ContentType = this.ContentType;
            }
            else
            {
                response.ContentType = "application/json";
            }
            if (this.ContentEncoding != null)
            {
                response.ContentEncoding = this.ContentEncoding;
            }
            if (this.Data != null)
            {
                string strJson = JsonConvert.SerializeObject(this.Data, JsonSerializerSettings);
                response.Write(strJson);
                response.End();
            }
        }
    }
}

调用demo:

 public ActionResult Get(int pageIndex)
        {
            IArticleService service = new ArticleService();
            int allPageCount;
            List<Model.Article> list = service.GetArticleByPage(PAGESIZE, pageIndex, out allPageCount);
            return new NewtonJsonResult(list, new JsonSerializerSettings() { DateFormatString="yyyy年MM月dd日 HH:mm:ss" });
        }

上面代码随手写的，有错误，望大家勿喷...

另外，还写了静态的ControllBase扩展方法

using System.Text;
using System.Web.Mvc;

namespace System.Web.Mvc
{
    public static class ControllerExtend
    {
        public static ActionResult NewtonJson(this ControllerBase controller, object obj)
        {
            return NewtonJson(controller, null, null, JsonRequestBehavior.DenyGet, obj);
        }
        public static ActionResult NewtonJson(this ControllerBase controller, Encoding encoding, string contentType, JsonRequestBehavior jsonRequestBehavior, object obj)
        {
            return new NewtonJsonResult() { ContentEncoding = encoding, ContentType = contentType, JsonRequestBehavior = jsonRequestBehavior, Data = obj };
        }
        public static ActionResult NewtonJson(this ControllerBase controller, object obj, JsonRequestBehavior jsonRequestBehavior)
        {
            return NewtonJson(controller, null, null, jsonRequestBehavior, obj);
        }
        public static ActionResult NewtonJson(this ControllerBase controller, object obj, Encoding encoding, JsonRequestBehavior jsonRequestBehavior)
        {
            return NewtonJson(controller, encoding, null, jsonRequestBehavior, obj);
        }
        public static ActionResult NewtonJson(this ControllerBase controller, object obj, string contentType)
        {
            return NewtonJson(controller, null, contentType, JsonRequestBehavior.DenyGet, obj);
        }
        public static ActionResult NewtonJson(this ControllerBase controller, object obj, Encoding encoding)
        {
            return NewtonJson(controller, encoding, null, JsonRequestBehavior.DenyGet, obj);
        }
        public static ActionResult NewtonJson(this ControllerBase controller, object obj, Encoding encoding, string contentType)
        {
            return NewtonJson(controller, encoding, contentType, JsonRequestBehavior.DenyGet, obj);
        }
        public static ActionResult NewtonJson(this ControllerBase controller, object obj, Encoding encoding, string contentType, JsonRequestBehavior jsonRequestBehavior)
        {
            return NewtonJson(controller, encoding, contentType, jsonRequestBehavior, obj);
        }
    }
}

不过，调用的时候有点小问题，看下面的最后两个return语句，不太明白为什么扩展方法必须要写一个对象去调用？难道是扩展方法中的第一个参数导致的必须写？还望路过的大侠给小弟解惑，小弟不胜感激...

public ActionResult Get(int pageIndex)
        {
            IArticleService service = new ArticleService();
            int allPageCount;
            List<Model.Article> list = service.GetArticleByPage(PAGESIZE, pageIndex, out allPageCount);
            return new NewtonJsonResult(list, new JsonSerializerSettings() { DateFormatString="yyyy年MM月dd日 HH:mm:ss" });
            return NewtonJson(list);//这样是直接报错的，找不到方法，必须按照下面的写法才行..
            return this.NewtonJson(list);
        }