logback只输出WARN级别的日志

<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">

<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<!--<Pattern>${ENCODER_PATTERN}</Pattern>-->
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %X{QTRACER} %X{MDCContextId}-%X{MDCSupplyService}-%X{MDCSupplyRetryTime} %-5level %logger{0} - %msg%n</pattern>
</encoder>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>warn</level>
<onMatch>ACCEPT</onMatch>
　　　　 <onMismatch>DENY</onMismatch>
</filter>
</appender>