// -----------------------------------------------------------------------

 //  <copyright file="CustomExceptionAttribute.cs" company="技术支持——谭明超">

 //      Copyright (c) 2016 QS.Web.Extensions. All rights reserved.

 //  </copyright>

 //  <last-editor>谭明超</last-editor>

 //  <last-date>2016/8/2 20:56:16</last-date>

 // -----------------------------------------------------------------------

 using System;

 using System.Web;

 using System.Web.Mvc;

 namespace QS.Web.Extensions

 {

     public class CustomExceptionAttribute : FilterAttribute, IExceptionFilter

     {

         public void OnException(ExceptionContext filterContext)

         {

             Exception exception = filterContext.Exception;

             if (filterContext.ExceptionHandled == true)

             {

                 return;

             }

             HttpException httpException = new HttpException(null, exception);

             //filterContext.Exception.Message可获取错误信息

             /*

              * 1、根据对应的HTTP错误码跳转到错误页面

              * 2、这里对HTTP 404/400错误进行捕捉和处理

              * 3、其他错误默认为HTTP 500服务器错误

              */

             if (httpException != null && (httpException.GetHttpCode() ==  || httpException.GetHttpCode() == ))

             {

                 filterContext.HttpContext.Response.StatusCode = ;

                 filterContext.HttpContext.Response.Write("错误的请求路径");

                 filterContext.HttpContext.Response.WriteFile("~/HttpError/404.html");

             }

             else

             {

                 filterContext.HttpContext.Response.StatusCode = ;

                 filterContext.HttpContext.Response.Write("服务器内部错误");

                 filterContext.HttpContext.Response.WriteFile("~/HttpError/500.html");

             }

             /*---------------------------------------------------------

              * 这里可进行相关自定义业务处理，比如日志记录等

              ---------------------------------------------------------*/

             //设置异常已经处理,否则会被其他异常过滤器覆盖

             filterContext.ExceptionHandled = true;

             //在派生类中重写时，获取或设置一个值，该值指定是否禁用IIS自定义错误。

             filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;

         }

     }

 }