<configSections>

    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->

    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4Net" />

  </configSections>

 <!--站点日志配置部分-->

  <log4net>

    <!-- Define some output appenders -->

    <!-- OFF, FATAL, ERROR, WARN, INFO, DEBUG, ALL -->

    <!-- Set root logger level to ERROR and its appenders -->

    <root>

      <level value="ERROR"/>

      <appender-ref ref="ErrorAppender"/>

    </root>

    <!-- Print only messages of level DEBUG or above in the packages -->

    <logger name="ErrorLogger">

      <level value="ERROR"/>

    </logger>

    <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender,log4net">

      <!--文件保存的地址-->

      <param name="File" value="App_Data/" />

      <!--是否追加-->

      <param name="AppendToFile" value="true"/>

      <!--最大日志文件数量-->

      <param name="MaxSizeRollBackups" value=""/>

      <!--文件最大值-->

      <param name="MaximumFileSize" value="2MB"/>

      <!--按照何种方式产生多个日志文件(日期[Date],文件大小[Size],混合[Composite])-->

      <param name="RollingStyle" value="Composite"/>

      <param name="DatePattern" value="&quot;Logs_Error&quot;yyyyMMdd&quot;.txt&quot;"/>

      <!--是否只写到一个文件中-->

      <param name="StaticLogFileName" value="false"/>

      <layout type="log4net.Layout.PatternLayout">

        <!--输出格式-->

        <!--%logger：错误的对象-->

        <param name="ConversionPattern" value="%date [%thread] %-5level %logger - %message%newline%newline"/>

        <param name="Header" value="
-------------------Error-header-------------------

"/>

        <param name="Footer" value="
-------------------Error-footer-------------------

"/>

      </layout>

    </appender>

  </log4net>

public static Queue<Exception> Exceptions = new Queue<Exception>();

        /// <summary>

        /// 重写OnException方法来捕获异常数据

        /// </summary>

        /// <param name="filterContext"></param>

        public override void OnException(ExceptionContext filterContext)

        {

            base.OnException(filterContext);

            //捕获当前异常数据

            var ex = filterContext.Exception;

            //将异常数据入队

            Exceptions.Enqueue(ex);

            //跳转到错误页面

            filterContext.HttpContext.Response.Redirect("http://www.baidu.com");

        }

  log4net.Config.XmlConfigurator.Configure();

//开启一个线程,扫描异常信息队列.

            var filePath = Server.MapPath("/Log/");

            ThreadPool.QueueUserWorkItem((a) =>

            {

                while (true)

                {

                    //判断队列中是否有数据

                    if (Log4ExceptionAttribute.Exceptions.Any())

                    {

                        //出队一条异常信息

                        var ex = Log4ExceptionAttribute.Exceptions.Dequeue();

                        //若异常信息不为空

                        if (ex == null) continue;

                        //将异常信息写入到日志文件中

                        var logger = LogManager.GetLogger("ErrorLogger");

                        logger.Error(ex.ToString());

                    }

                    else

                    {

                        //若异常信息队列为空，则线程休息三秒

                        Thread.Sleep();

                    }

                }

            }, filePath);

  public static void RegisterGlobalFilters(GlobalFilterCollection filters)

        {

            //filters.Add(new HandleErrorAttribute());

            filters.Add(new Log4ExceptionAttribute());

        }