Levelfilter introduction

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LevelFilter Introduction

The following is about logback in LevelFilter Introduction

LevelFilter: Grade filter   Filter by log level   When the log level is equal to the configuration level   The filter will be based on onMath  and  onMismatch Receive or reject logs  

LevelFilter attribute

<level>: Set filter level 
<onMatch>: It is used to configure the operations that meet the filtering conditions 
<onMismatch>: Used to configure operations that do not meet the filter criteria 

example

// Configure the filter's log level to INFO, all INFO Level log to appender Handle , Not INFO Level of logging , Be filtered out 
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">   
<filter class="ch.qos.logback.classic.filter.LevelFilter">   
  <level>INFO</level>   
  <onMatch>ACCEPT</onMatch>   
  <onMismatch>DENY</onMismatch>   
</filter>   
<encoder>   
  <pattern>   
	%-4relative [%thread] %-5level %logger{30} - %msg%n   
  </pattern>   
</encoder>   
</appender>