slf4j初始化流程

appender级别过滤

additive==true

log对象本身日志级别过滤

配置文件<logger name=\"learnslf4j\" level=\"trace\" additivity=\"false\">   <appender-ref ref=\"STDOUT\" />  </logger>     <root level=\"info\">      <appender-ref ref=\"STDOUT\" />  </root>

ROOT节点

log.trace

appender-ref集合输出

learnslf4j.LearnSlf4j类

14:34:11.841 [main] TRACE learnslf4j.LearnSlf4j - LearnSlf4j trace14:34:11.841 [main] TRACE learnslf4j.LearnSlf4j - LearnSlf4j trace

learnslf4j节点

learnslf4j.LearnSlf4节点