log4net在类库中不起作用

Question

I want to implement logging function into a class library, which is itself referenced in a webapplication. I tried to add app.config and did everything needed, but its not logging any message, log4net simply does nothing.
Here is my app.config


<?xml version="1.0" encoding="utf-8" ?>
    <configuration>
      <configSections>
        <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
      </configSections>

      <log4net debug="true">
        <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
          <file value="D:\StagingPortal2012\Communicationlogs\TestProjlog4net.txt" />
          <appendToFile value="true" />
          <rollingStyle value="Size" />
          <maxSizeRollBackups value="10" />
          <maximumFileSize value="20MB" />
          <staticLogFileName value="true" />
          <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%newline%-5p %d %-22.22c{1} %-18.18M - %m%n" />
          </layout>
        </appender>

        <root>
          <appender-ref ref="RollingLogFileAppender" />
          <level value="DEBUG"></level>
        </root>
      </log4net>
      <appSettings>
        <add key="log4net.Internal.Debug" value="true" />
      </appSettings>

    </configuration>


And Assembly.Info.cs



[assembly: log4net.Config.XmlConfigurator(ConfigFile = "App.config")]

和Communicator.cs（在这里我使用log4net编写日志）

私有静态只读ILog日志= LogManager.GetLogger（   System.Reflection.MethodBase.GetCurrentMethod（）。DeclaringType）;