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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);
    }
}
    C#

  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 };
    }
}
    C#