Global.asax.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;

namespace DirectPurchase
{
    public class MvcApplication : System.Web.HttpApplication
    { 
        protected void Application_Start()
        { 
            GlobalConfiguration.Configure(WebApiConfig.Register);  
            GlobalConfiguration.Configuration.Formatters.XmlFormatter.SupportedMediaTypes.Clear();//删除XML格式 回應 
        }
        protected void Application_BeginRequest(object sender, System.EventArgs e)
        {
            var req = System.Web.HttpContext.Current.Request;
            if (req.HttpMethod == "OPTIONS")//过滤options请求，用于js跨域
            {
                Response.StatusCode = 200;
                Response.SubStatusCode = 200;
                Response.End();
            }
        }

        protected void Application_Error(Object sender, EventArgs e)
        {
            Exception lastError = Server.GetLastError();
            if (lastError != null)
            {
                //异常信息
                string strExceptionMessage = string.Empty;

                //对HTTP 404做额外处理，其他错误全部当成500服务器错误
                HttpException httpError = lastError as HttpException;
                if (httpError != null)
                {
                    //获取错误代码
                    int httpCode = httpError.GetHttpCode();
                    strExceptionMessage = httpError.Message;
                    if (httpCode == 400 || httpCode == 404)
                    {
                        Response.StatusCode = 404;
                        //跳转到指定的静态404信息页面，根据需求自己更改URL
                        Response.RedirectToRoute("Default", new
                        {
                            controller = "Error", //控制器
                            action = "Index"  //Action 
                        });
                        Server.ClearError();
                        return;
                    }
                }

                strExceptionMessage = lastError.Message;

                /*-----------------------------------------------------
                 * 此处代码可根据需求进行日志记录，或者处理其他业务流程
                 * ---------------------------------------------------*/

                /*
                 * 跳转到指定的http 500错误信息页面
                 * 跳转到静态页面一定要用Response.WriteFile方法                 
                 */
                Response.StatusCode = 500;
                //Response.WriteFile("~/HttpError/500.html");
                Response.RedirectToRoute("Default", new
                {
                    controller = "Error", //控制器
                    action = "Index"  //Action 
                });

                //一定要调用Server.ClearError()否则会触发错误详情页（就是黄页）
                Server.ClearError();
                //Server.Transfer("~/HttpError/500.aspx");

            }
        }
    }
}