net错误日志统一处理 Global.asax

webform错误日志统一处理 Global.asax

        protected void Application_Error(object sender, EventArgs e)
        {
            //在出现未处理的错误时运行的代码
            //在出现未处理的错误时运行的代码
            Exception objErr = Server.GetLastError().GetBaseException();
            string error = string.Empty;
            string errortime = string.Empty;
            string erroraddr = string.Empty;
            string errorinfo = string.Empty;
            string errorsource = string.Empty;
            string errortrace = string.Empty;
            error += "发生时间:" + System.DateTime.Now.ToString() + "
";
            errortime = "发生时间:" + System.DateTime.Now.ToString();
            error += "发生异常页: " + Request.Url.ToString() + "
";
            erroraddr = "发生异常页: " + Request.Url.ToString() + "?action=" + (Request["action"] ?? "");
            error += "异常信息: " + objErr.Message + "
";
            errorinfo = "异常信息: " + objErr.Message;
            errorsource = "错误帮助信息:" + objErr.HelpLink;
            errortrace = "堆栈信息:" + objErr.StackTrace;
            error += "--------------------------------------
";
            Server.ClearError();
            Application["error"] = error;
            //独占方式，因为文件只能由一个进程写入.
            System.IO.StreamWriter writer = null;
            try
            {
                lock (this)
                {
                    // 写入日志
                    string year = DateTime.Now.Year.ToString();
                    string month = DateTime.Now.Month.ToString();
                    string path = string.Empty;
                    string filename = DateTime.Now.Day.ToString() + ".html";
                    path = Server.MapPath("~/ErrorLog1872/") + year + "/" + month;
                    //如果目录不存在则创建
                    if (!System.IO.Directory.Exists(path))
                    {
                        System.IO.Directory.CreateDirectory(path);
                    }
                    System.IO.FileInfo file = new System.IO.FileInfo(path + "/" + filename);


                    //文件不存在就创建,true表示追加

                    writer = new System.IO.StreamWriter(file.FullName, true);

                    string ip = "用户IP:" + Request.UserHostAddress;
                    string line = "-----------------------------------------------------";

                    string log = "

" + line + "
" + errortime + "  " + erroraddr + "
" + "
" + ip + errorinfo + "
" + errorsource + "
" + errortrace.Replace("\r\n", "
") + "
";
                    writer.WriteLine(log);

                }
            }
            finally
            {
                if (writer != null)
                    writer.Close();

            }
            Response.Write("{\"ret\":-1}");
            Response.End();
        }

MVC错误信息统一处理
首先在App_Start里面新建一个类MyExceptionFilterAttribute.cs，继承HandleErrorAttribute，重写OnException方法。
修改App_Start/FilterConfig.cs

 public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            //filters.Add(new HandleErrorAttribute());
            filters.Add(new MyExceptionFilterAttribute());  
        }

public class MyExceptionFilterAttribute : HandleErrorAttribute 
    {
        public override void OnException(ExceptionContext filterContext)
        {
            var dt = DateTime.Now;
            var logPath = HttpContext.Current.Server.MapPath("/errorlog/" + dt.ToString("yyyy-MM"));
            if (!Directory.Exists(logPath))
            {
                Directory.CreateDirectory(logPath);
            }
            var logFilePath = string.Format("{0}/{1}.txt", logPath, dt.ToString("yyyy-MM-dd"));
            StreamWriter writer = null;
            try
            {
                writer = new StreamWriter(logFilePath, true, Encoding.UTF8);
                writer.WriteLine("------------------------------------------------------------------------------");
                writer.WriteLine("出错时间：" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));
                writer.WriteLine("错误信息：" + filterContext.Exception.Message);
                writer.WriteLine("Controller：" + filterContext.Controller);
                writer.WriteLine("错误源：" + filterContext.Exception.Source);
                writer.WriteLine("堆栈信息：" + filterContext.Exception.StackTrace);
                writer.WriteLine("------------------------------------------------------------------------------");
            }
            catch
            {
            }
            finally
            {
                if (writer != null)
                {
                    writer.Close();
                }
            }
        }  
    }