ASP.NET MVC 全局异常

先新建一个过滤器ExceptionHandleErrorAttribute.cs

内容如下：

 using System;
 using System.Net;
 using System.Web;
 using System.Web.Mvc;
 using ABBPMP.Utility.NLogHelper.Static;

 namespace ABBPMP.Filter
 {
     /// <summary>
     /// 异常捕获（业务逻辑层，UI层）
     /// </summary>
     public class ExceptionHandleErrorAttribute : HandleErrorAttribute
     {
         /// <summary>
         /// 错误拦截
         /// </summary>
         /// <param name="filterContext"></param>
         public override void OnException(ExceptionContext filterContext)
         {

             if (filterContext.ExceptionHandled)
             {
                 return;
             }

             string message =
                 $"消息类型：{filterContext.Exception.GetType().Name}\r\n消息内容：{filterContext.Exception.Message}\r\n引发异常的方法：{filterContext.Exception.TargetSite}\r\n引发异常的对象：{filterContext.Exception.Source}\r\n异常目录：{filterContext.RouteData.GetRequiredString("controller")}\r\n异常方法：{filterContext.RouteData.GetRequiredString("action")}\r\n错误详细记录：{filterContext.Exception.StackTrace}";
             NLogHandler.Instance.Error(message);
             if (!filterContext.HttpContext.Request.IsAjaxRequest())
             {
                 filterContext.Controller.ViewData.Model = filterContext.Exception;
                 filterContext.Result = new ViewResult
                 {
                     ViewName = "~/Views/Error/Error.cshtml",
                     ViewData = filterContext.Controller.ViewData
                 };
             }
             filterContext.Result = AjaxError(filterContext.Exception.Message, filterContext);

             filterContext.ExceptionHandled = true;
         }
         /// <summary>
         /// Ajaxes the error.
         /// </summary>
         /// <param name="message">The message.</param>
         /// <param name="filterContext">The filter context.</param>
         /// <returns>JsonResult</returns>
         protected JsonResult AjaxError(string message, ExceptionContext filterContext)
         {

             //If message is null or empty, then fill with generic message
             if (String.IsNullOrEmpty(message))
                 message = "Something went wrong while processing your request. Please refresh the page and try again.";
             //Set the response status code to 500
             filterContext.HttpContext.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
             //Needed for IIS7.0
             filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
             return new JsonResult
             {
                 //can extend more properties
                 Data = new AjaxExceptionModel() { ErrorMessage = message },
                 ContentEncoding = System.Text.Encoding.UTF8,
                 JsonRequestBehavior = JsonRequestBehavior.DenyGet

             };

         }
         /// <summary>
         /// AjaxExceptionModel
         /// </summary>
         public class AjaxExceptionModel
         {
             /// <summary>
             /// Gets or sets the error message.
             /// </summary>
             /// <value>
             /// The error message.
             /// </value>
             public string ErrorMessage { get; set; }

         }

     }
 }

然后在FilterConfig添加

Global.asax全局下添加

最后处理下ajax错误处理和服务器错误呈现形式

@{
    ViewBag.Title = "General Site Error";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
<div class="container">
    <div class="row text-center">
        <br/>
        <br />
        <br />
        <br />
        <br />
        <div class="col-md-6 col-md-offset-3 text-center">
            @{

                var exception = ViewData.Model;
                var statusCode = exception == null ? 404 : 500;
                Response.StatusCode = statusCode;
                if (statusCode == 404)
                {
                    <h1>404 Page not found!</h1>
                    <p>没有找到该网页!</p>
                }
                else if (statusCode == 500)
                {
                    <h1>500 程序异常</h1>
                    <p>
                        <a class="btn" data-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample">
                            Error details
                        </a>
                    </p>
                    <div class="collapse" id="collapseExample">
                        <div class="card card-body">
                            <p style="text-align: left;">消息类型：@exception.GetType().Name<br />消息内容：@exception.Message <br />引发异常的方法：@exception.TargetSite <br />引发异常的对象：@exception.Source<br />错误详细记录：@exception.StackTrace</p>
                        </div>
                    </div>

                }
            }
            <p style="font-size: 14px; color: Gray">请使用浏览器的后退功能已保证您填写的数据没有丢失！</p>
        </div>
    </div>

    <div class="row text-center">
        <div class="col-md-8 col-md-offset-2">
            <h3> <i class="fa fa-lightbulb-o fa-5x"></i> </h3>
            <a href="@Url.Action("Index","Home")" class="btn">GO TO HOME PAGE</a>
        </div>
    </div>

</div>

 $(document).ajaxError(function (event, request, settings) {
            //request.responseText
            if (request.responseText != "") {
                var jsonValue = jQuery.parseJSON(request.responseText);
            }
            toastr.error("<li>settings.url:" + settings.url + "</li>" + "<li>request.status:" + request.status + "</li>" + "<li>request.statusText:" + request.statusText + "</li>" + "<li>ErrorMessage:" + jsonValue.ErrorMessage + "</li>");
        });