Asp.Net网站统一处理错误信息

            Exception ex = Server.GetLastError().GetBaseException();
            StringBuilder sb = new StringBuilder();
            sb.AppendLine(DateTime.Now.ToString("yyyy.MM.dd HH:mm:ss"));

            //有被注入风险
            string ip = "";

            if (Request.ServerVariables.Get("HTTP_X_FORWARDED_FOR") != null)
            {
                ip = Request.ServerVariables.Get("HTTP_X_FORWARDED_FOR").ToString().Trim();
            }
            else
            {
                ip = Request.ServerVariables.Get("Remote_Addr").ToString().Trim();
            }

            sb.AppendLine("IP地址:" + ip);
            sb.AppendLine("浏览器:" + Request.Browser.Browser.ToString());
            sb.AppendLine("浏览器版本:" + Request.Browser.MajorVersion.ToString());
            sb.AppendLine("操作系统:" + Request.Browser.Platform.ToString());
            sb.AppendLine("错误信息：");
            sb.AppendLine("请求地址：" + Request.Url.ToString());
            sb.AppendLine("错误信息：" + ex.Message);
            sb.AppendLine("错误源：" + ex.Source);
            sb.AppendLine("异常方法：" + ex.TargetSite);
            sb.AppendLine("堆栈信息：" + ex.StackTrace);
            sb.AppendLine("====================================================================================================================");
 
            string logFilePath = Server.MapPath("~/log/");

            if (!Directory.Exists(logFilePath))
            {
                Directory.CreateDirectory(logFilePath);
            }

            File.AppendAllText(logFilePath + DateTime.Now.ToString("yyyy.MM.dd") + ".log", sb.ToString(), Encoding.UTF8);

            Server.ClearError();
            Response.Redirect("myError.htm");