默认log4net配置

Question

I have the following code:

    public Log4NetLogger()
        : base(LogLevel.Debug)
    {
        if(!LogManager.GetRepository().Configured)
        {
            lock(mLocker)
            {
                if(!LogManager.GetRepository().Configured)
                {
                    XmlConfigurator.Configure();
                }
            }
        }

        mLog4NetInstance = LogManager.GetLogger(typeof(Log4NetLogger));
    }

With the following web.config:

  <log4net>
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="Logs\MaMLog_" />
      <appendToFile value="true" />
      <StaticLogFileAppName value="false" />
      <rollingStyle value="Date" />
      <datePattern value="yyyyMMMdd_dddd'.log'" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date{dd MMM yyyy HH:mm:ss,fff} [%thread] -() %message%newline" />
      </layout>
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    </appender>
    <logger name="MyLog1">
      <level value="Debug" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>
    <logger name="MyLog2">
      <level value="Debug" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>
  </log4net>

How does the code know the logger name? If at all?

Answer 1

Since you are using

mLog4NetInstance = LogManager.GetLogger(typeof(Log4NetLogger));

then the logger name will be the value of typeof(Log4NetLogger).FullName which is usually of the form YourNameSpace.Log4NetLogger

Nothing will be logged in this example, because you don't have a logger with that name and you don't have a root section to fall back to , eg

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