global中拦截404错误的实现方法

1.

    void Application_Error(object sender, EventArgs e)

    {

    if(Context != null)

    {

    HttpContext ctx = HttpContext.Current;

    Exception ex = ctx.Server.GetLastError();

    HttpException ev = ex as HttpException;

    if(ev!= null)

    {

    if(ev.GetHttpCode() == 404)

    {

    ctx.ClearError();

    Response.Redirect("~/nofound.aspx", false);

    Response.End();

    }

    else

    {

    Server.Transfer("~/Error.aspx", false);

    }

    }

    }

    }

 

 

2.

        //全站 Error 处理

        protected void Application_Error()

        {

            //获取关于当前请求的 HTTP 特定信息。

            if (Context != null)

            {

                Exception ex = HttpContext.Current.Server.GetLastError() as Exception;

                //HttpException ex = Context.Server.GetLastError() as HttpException;

                if (ex != null)

                {

                    //404

                    if (ex is HttpException)

                    {

                        HttpException hEx = ex as HttpException;

                        if (hEx.GetHttpCode() == 404)

                        {

                            Context.ClearError();

                            Context.Response.Redirect("~/RouteOne/NotFind/?from=" + Context.Request.UrlReferrer);

                            Context.Response.End();

                        }

                    }

                    else

                    {

                        //服务器错误

                        //Context.Server.Transfer("~/RouteOne/Error/?msg=" + ex.Message);

                        Context.Response.Redirect("~/RouteOne/Error/?msg=" + Context.Request.UrlReferrer);

                        Context.Response.End();

                    }

                }

            }

        }