创建一个ThresholdLoggerFilter类，可以将其放在附加器上，例如：
<appender name="STDOUT" > <filter > <level>INFO</level> </filter> <filter > <logger>org.springframework</logger> <level>ERROR</level> </filter> </appender>
以下代码有效
package com.myapp;import ch.qos.logback.classic.Level;import ch.qos.logback.classic.spi.ILoggingEvent;import ch.qos.logback.core.filter.Filter;import ch.qos.logback.core.spi.FilterReply;public class ThresholdLoggerFilter extends Filter<ILoggingEvent> { private Level level; private String logger; @Override public FilterReply decide(ILoggingEvent event) { if (!isStarted()) { return FilterReply.NEUTRAL; } if (!event.getLoggerName().startsWith(logger)) return FilterReply.NEUTRAL; if (event.getLevel().isGreaterOrEqual(level)) { return FilterReply.NEUTRAL; } else { return FilterReply.DENY; } } public void setLevel(Level level) { this.level = level; } public void setLogger(String logger) { this.logger = logger; } public void start() { if (this.level != null && this.logger != null) { super.start(); } }}
