log4net file Appender使用示例

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

  <log4net>
    <root>
      <level value="WARN" />
      <appender-ref ref="LogFileAppender" />
    </root>

    <logger name="testApp.Logging">
      <level value="DEBUG"/>
    </logger>

    <appender name="LogFileAppender"
             type="log4net.Appender.FileAppender" >
      <param name="File" value="log-file.txt" />
      <param name="AppendToFile" value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern"
           value="%d [%t] %-5p %c [%x] - %m %e%n"
         />
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="DEBUG" />
        <param name="LevelMax" value="FATAL" />
      </filter>
    </appender>
  </log4net>
</configuration>