Common Logging & log4net

common logging是一个通用日志接口，log4net是一个更强大的具体实现，另外可用不同的实现，如EntLib的日志、NLog等。

Common.Logging.dll

Common.Logging.Log4Net.dll　　（适配器）

 log4net.dll

  class Program
    {
        //public static ILog log = LogManager.GetCurrentClassLogger();
        public static ILog log = LogManager.GetLogger("Program");
        static void Main(string[] args)
        {
            //DEBUG < INFO < WARN < ERROR < FATAL

            if (log.IsDebugEnabled)
            {
                log.Debug("Debug info");
            }

            log.Info("info info");
            log.Warn("Warn info");
            log.ErrorFormat("Error {0}","info");
            log.Fatal("fatal info");
            Console.WriteLine("done");

            Console.ReadLine();
        }
    }

 config file

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    
    <sectionGroup name="common">
      <section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging" />
    </sectionGroup>

    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
    
    
  </configSections>
  <common>
    <!--[DEBUG < INFO < WARN < ERROR < FATAL]--> 
    <logging>
      
      <!--<factoryAdapter type="Common.Logging.Simple.ConsoleOutLoggerFactoryAdapter, Common.Logging">
        <arg key="level" value="WARN" />
        <arg key="showLogName" value="true" />
        <arg key="showDataTime" value="true" />
        <arg key="dateTimeFormat" value="yyyy/MM/dd HH:mm:ss:fff" />
      </factoryAdapter>-->

     
     
        <factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4net">
          <!--FILE
              FILE-WATCH
              INLINE
              EXTERNAL-->
          <arg key="configType" value="INLINE" />          
          
          <!--<arg key="configType" value="FILE-WATCH" />
          <arg key="configFile" value="~/log4net.config" />-->
        </factoryAdapter>    
      
    </logging>
  </common>
  
  <log4net>
    <!--<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger %ndc - %message%newline" />
      </layout>
    </appender>-->

    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender, log4net">
      <param name="LockingModel" type="log4net.Appender.FileAppender+MinimalLock" />
      <param name="File" value="logs/" />
      <param name="StaticLogFileName" value="false" />
      <param name="DatePattern" value="yyyy-MM-dd.'log'" />
      <param name="AppendToFile" value="true" />
      <param name="MaxSizeRollBackups" value="10" />
      <param name="MaximumFileSize" value="5MB" />
      <param name="RollingStyle" value="Date" />
      <!--Size ==- Date-->
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" />
      </layout>
    </appender>
    
    <root>
      <level value="DEBUG" />
      <appender-ref ref="RollingLogFileAppender" />
    </root>
    
    <logger name="MyApp.DataAccessLayer">
      <level value="DEBUG" />      
    </logger>

    <!--root>
        <level value="error" />
        <appender-ref ref="RollingLogFileAppender" />
    </root-->

    <!-- ALL DEBUG INFO WARN ERROR FATAL OFF [DEBUG < INFO < WARN < ERROR < FATAL] 大范围 到 小范围-->
    <logger name="Spring">
      <level value="ERROR" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>

    <logger name="APP" debug="false">
      <level value="Error" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>

    <logger name="Game" debug="false">
      <level value="all" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>

    <logger name="Web" debug="false">
      <level value="ERROR" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>

    
  </log4net>
  
</configuration>