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当我尝试从 XML 读取附加程序时,我得到 return null,

这是我的文件。xml

<appender name="FileInfoStatistics"   class="utils.monitorstatistics.CustonAppenderRollFile"> 
<param name="file" value="Statistics.log"/> 
<param name="MaxFileSize" value="100KB"/>
<layout class="utils.monitorstatistics.CustomAppenderStatistics"> 
    <param name="ConversionPattern" value="%-5p %c{1} - %m%n"/> 
</layout> 
</appender>

<logger name="utils.monitorstatistics" additivity="false">
<level value="INFO"/>

<appender-ref ref="FileInfoStatistics"/>
</logger>

这是我尝试阅读附加程序的java部分:

Logger mylogger = Logger.getLogger("utils.monitorstatistics");
Appender app = mylogger.getAppender("FileInfoStatistics");

getAppender 返回 null

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