log4net+mvc

LogHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TransactionScope4DbTransaction.Log
{
    public class LogHelper
    {
        public static void WriteLog_Error(Type t, Exception ex)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Error("Unhandled exception",ex);
        }
        public static void WriteLog_Error(Type t, string msg)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Error(msg);
        }
        public static void WriteLog_Info(Type t, string msg)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Info(msg);
        }
    }
}

Log4NetExceptionFilter

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using TransactionScope4DbTransaction.Log;

namespace WebApplication.App_Start
{
    public class Log4NetExceptionFilter:IExceptionFilter
    {

        public void OnException(ExceptionContext filterContext)
        {
            LogHelper.WriteLog_Error(GetType(),filterContext.Exception);
        }
    }
}

Web.config

<section name="log4net" type="System.Configuration.IgnoreSectionHandler" />

<log4net>
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <!--日志路径-->
      <param name= "File" value= "E:\App_Log\"/>
      <!--是否是向文件中追加日志-->
      <param name= "AppendToFile" value= "true"/>
      <!--log保留天数-->
      <param name= "MaxSizeRollBackups" value= "10"/>
      <!--日志文件名是否是固定不变的-->
      <param name= "StaticLogFileName" value= "false"/>
      <!--日志文件名格式为:2008-08-31.log-->
      <param name= "DatePattern" value= "yyyy-MM-dd&quot;.log&quot;"/>
      <!--日志根据日期滚动-->
      <param name= "RollingStyle" value= "Date"/>
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n %loggername" />
      </layout>
    </appender>
    <!-- 控制台前台显示日志 -->
    <appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
      <mapping>
        <level value="ERROR" />
        <foreColor value="Red, HighIntensity" />
      </mapping>
      <mapping>
        <level value="Info" />
        <foreColor value="Green" />
      </mapping>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%n%date{HH:mm:ss,fff} [%-5level] %m" />
      </layout>

      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="Info" />
        <param name="LevelMax" value="Fatal" />
      </filter>
    </appender>
    <root>
      <!--(高) OFF > FATAL > ERROR > WARN > INFO > DEBUG > ALL (低) -->
      <level value="all" />
      <appender-ref ref="ColoredConsoleAppender"/>
      <appender-ref ref="RollingLogFileAppender"/>
    </root>
  </log4net>

Startup.cs

using Microsoft.Owin;
using Owin;

[assembly: OwinStartupAttribute(typeof(WebApplication.Startup))]
[assembly: log4net.Config.XmlConfigurator(ConfigFile = "Web.config", Watch = true)]
namespace WebApplication
{
    public partial class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            ConfigureAuth(app);
        }
    }
}

Global.asax

using log4net.Config;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;

namespace WebApplication
{
    public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);
            log4net.Config.XmlConfigurator.Configure(new FileInfo(Server.MapPath("~/Web.config")));
        }
        protected void Application_Error(Object sender, EventArgs e)
        {

        }
    }
}

Log4NetExceptionFilter

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using TransactionScope4DbTransaction.Log;

namespace WebApplication.App_Start
{
    public class Log4NetExceptionFilter:IExceptionFilter
    {

        public void OnException(ExceptionContext filterContext)
        {
            LogHelper.WriteLog_Error(GetType(),filterContext.Exception);
        }
    }
}