如果在appender-
ref中指定INFO，则附加程序将接收INFO，WARN，ERROR和FATAL事件。您可以通过过滤掉WARN，ERROR和FATAL级别的事件来进一步限制为仅INFO：
<File name="AuditFile" fileName="myapp-audit.log"> <PatternLayout pattern="%d{yyyy-mm-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%nZ" /> <Filters> <!-- First deny warn, error and fatal messages --> <ThresholdFilter level="warn" onMatch="DENY" onMismatch="NEUTRAL"/> <ThresholdFilter level="error" onMatch="DENY" onMismatch="NEUTRAL"/> <ThresholdFilter level="fatal" onMatch="DENY" onMismatch="NEUTRAL"/> <!-- Then accept info, warn, error, fatal and deny debug/trace --> <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/> </Filters></File>
