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1. 新建一个类 CustomesJsonResult 继承自 MVC 自带的 JsonResult,重写它的 ExecuteResult 方法

   public class JsonConvertResult : JsonResult
   {
       public JsonConvertResult()
       {
           Settings = new JsonSerializerSettings
           {
               //这句是解决Json序列化循环引用问题的关键，也就是json.net官方给出的解决配置选项
               ReferenceLoopHandling = ReferenceLoopHandling.Ignore
           };
       }
   
       /// <summary> 指定Json对象序列化设置 </summary>
       public JsonSerializerSettings Settings { get; private set; }
   
       /// <summary> 重写执行视图 </summary>
       /// <param name="context"> 上下文 </param>
       public override void ExecuteResult(ControllerContext context)
       {
           if (context <span style="font-weight: bold;" class="mark"> null)
               throw new ArgumentNullException("context");
           if (this.JsonRequestBehavior </span> JsonRequestBehavior.DenyGet && string.Equals(context.HttpContext.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase))
               throw new InvalidOperationException("JSON GET is not allowed");
   
           var response = context.HttpContext.Response;
           response.ContentType = !string.IsNullOrEmpty(ContentType) ? ContentType : "application/json";
           if (ContentEncoding != null)
               response.ContentEncoding = ContentEncoding;
   
           var jsonSerizlizerSetting = new JsonSerializerSettings();
           //设置取消循环引用
           jsonSerizlizerSetting.MissingMemberHandling = MissingMemberHandling.Ignore;
           //设置首字母小写
           jsonSerizlizerSetting.ContractResolver = new CamelCasePropertyNamesContractResolver();
           //设置日期的格式为：yyyy-MM-dd HH:mm
           jsonSerizlizerSetting.DateFormatString = "yyyy-MM-dd HH:mm";
           var json = JsonConvert.SerializeObject(Data, Formatting.None, jsonSerizlizerSetting);
           response.Write(json);
       }
   
   
   
   `}`
   

2. 新建一个 BaseController 并继承自 Controller

   public class BaseController : Controller
   {
       /// <summary> 重写将对象序列化为 JavaScript 对象 </summary>
       /// <param name="data"> 要序列化的 JavaScript 对象 </param>
       /// <param name="contentType"> 内容类型（MIME 类型） </param>
       /// <param name="contentEncoding"> 内容编码 </param>
       /// <param name="behavior"> JSON 请求行为 </param>
       /// <returns> </returns>
       protected override JsonResult Json(object data, string contentType, Encoding contentEncoding, JsonRequestBehavior behavior)
       {
           return new JsonConvertResult { Data = data, ContentType = contentType, ContentEncoding = contentEncoding, JsonRequestBehavior = behavior };
       }
   }