学步园

<?xml version="1.0" encoding="UTF-8"?>

<configuration>
	<substitutionProperty name="log.proj" value="${project.artifactId}" />
	<substitutionProperty name="log.base" value="logs/${log.proj}" />
    <substitutionProperty name="max.size" value="100MB" />
    <jmxConfigurator />

    <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%date [%thread] %-5level %logger{80} - %msg%n</pattern>
        </layout>
    </appender>

    <appender name="file.info" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <File>${log.base}/${log.proj}_info.log</File>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
		  <fileNamePattern>${log.base}/${log.proj}_info.%i.gz</fileNamePattern>
		  <minIndex>1</minIndex>
		  <maxIndex>20</maxIndex>
		</rollingPolicy>
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
		  <maxFileSize>${max.size}</maxFileSize>
		</triggeringPolicy>
		<encoder>
		  <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
		</encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <root level="DEBUG">
        <appender-ref ref="stdout" />
        <appender-ref ref="file.info" />
    </root>
    <logger name="org.apache.zookeeper" additivity="false"> 
 		<appender-ref ref="file.info" /> 
       	<level value="INFO" /> 
	</logger>
</configuration>

默认maxIndex：7，MAX_WINDOW_SIZE：20。

如果需要保存更多的日志，需要变更日志保存策略或重写FixedWindowRollingPolicy类。