ASP.NET错误处理 日志记录

Java有log4j记录错误日志,而asp.net可以自己写一个来记录错误日志!

1. 先封装一个类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.IO;

using System.Globalization;





/// <summary>

/// ErrHandler 错误日志处理类

/// </summary>

public class ErrHandler

{

    public ErrHandler()

    {

        //

        // TODO: Add constructor logic here

        //

    }

    public static void WriteError(Exception e)

    {

        try

        {

            ///错误日志记录地址[每天产生一个日志文件]

            string path = "~/Error/" + DateTime.Today.ToString("dd-MM-yy") + ".log";

            if (!File.Exists(System.Web.HttpContext.Current.Server.MapPath(path)))

            {

                ///不存在该日志,则创建

                File.Create(System.Web.HttpContext.Current.Server.MapPath(path)).Close();

            }

            ///写日志记录

            using (StreamWriter w = File.AppendText(System.Web.HttpContext.Current.Server.MapPath(path)))

            {

                w.WriteLine("Error Recode:");

                w.WriteLine("\tError Time:{0}", DateTime.Now.ToString(CultureInfo.InvariantCulture));

                w.WriteLine("\tError Address:" + System.Web.HttpContext.Current.Request.Url.ToString());

                w.WriteLine("\tTargetSite:" + e.TargetSite);

                w.WriteLine("\tError Message:" + e.Message);

                w.WriteLine("\tError HelpLink:" + e.HelpLink);

                w.WriteLine("\tError StackTrace:" + e.StackTrace);

                w.WriteLine("************************************************************************************");

                w.WriteLine("\r\n\r\n");

                w.Flush();

                w.Close();

            }

        }

        catch (Exception ex)

        {

            WriteError(ex);

        }

    }



}

 

2.. 类写好了！哪里调用呢?  新建个Global.asax文件吧!

<%@ Application Language="C#" %>

<script runat="server">



    void Application_Start(object sender, EventArgs e) 

    {

        // Code that runs on application startup



    }

    

    void Application_End(object sender, EventArgs e) 

    {

        //  Code that runs on application shutdown

        

    }

        

    void Application_Error(object sender, EventArgs e) 

    { 

        //获取最后的错误

        Exception objErr = Server.GetLastError().GetBaseException();

        // 这里开始记录咯

        ErrHandler.WriteError(objErr);

        //清除前一个错误

        Server.ClearError();

    }



    void Session_Start(object sender, EventArgs e) 

    {

        // Code that runs when a new session is started

        

    }



    void Session_End(object sender, EventArgs e) 

    {

        // Code that runs when a session ends. 

        // Note: The Session_End event is raised only when the sessionstate mode

        // is set to InProc in the Web.config file. If session mode is set to StateServer 

        // or SQLServer, the event is not raised.



    }

       

</script>

这样只要一发生错误了，都会记录到日志里面! 你只需定期去检查错误日志了

当然你也可以在错误中记录,如:

try

        {

            throw new Exception("Error");

        }

        catch (Exception ex)

        {

            ErrHandler.WriteError(ex);

        }

OVER

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