log4net.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
  </configSections>
  <log4net>
    <!--按日期分割的appender-->
    <appender name="LogFileAppenderByDate" type="log4net.Appender.RollingFileAppender" >
      <param name="AppendToFile" value="true" />
      <!--是否续写-->
      <param name="LockingModel" value="log4net.Appender.FileAppender.MinimalLock" />
      <!--最小锁定模型以允许多个进程可以写入同一个文件-->
      <param name="StaticLogFileName" value="true" />
      <param name="File" value="Log\\" />
      <!--保存路径-->
      <param name="DatePattern" value="yyyy-MM-dd.TXT" />
      <param name="StaticLogFileName" value="false" />
      <param name="RollingStyle" value="Date" />
      <param name="MaxFileSize" value="102400000" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date ID:[%thread] %logger  ~~ %-5level ~~ %message%newline" />
        <!--输出格式-->

      </layout>
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    </appender>
    <root>
      <appender-ref ref="LogFileAppenderByDate" />
      <level value="ALL"></level>--&gt;<!--控制级别，由低到高: ALL|DEBUG|INFO|WARN|ERROR|FATAL|OFF-->
    </root>
  </log4net>

</configuration>