<appender name="type2" class="org.apache.log4j.DailyRollingFileAppender">
         <param name="File" value="c:\\cef\\log\\admin\\operate.log" />
         <param name="DatePattern" value="'.'yyyyMMdd'.log'" />
         <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%-d{yyyy-MM-dd HH:mm:ss} [%c]-[%p] %m%n"/>
         </layout>
  </appender>