logback.xml 配置文件详解

<?xml version="1.0" encoding="UTF-8"?>
<!-- 日志级别 -->
<!-- TRACE < DEBUG < INFO < WARN < ERROR  -->
<!-- 根节点<configuration>，包含下面三个属性： -->
<!-- scan: 当此属性设置为true时，配置文件如果发生改变，将会被重新加载，默认值为true。 -->　　　　
<!-- scanPeriod: 设置监测配置文件是否有修改的时间间隔，如果没有给出时间单位，默认单位是毫秒。当scan为true时，此属性生效。默认的时间间隔为1分钟。 -->　　　　
<!-- debug: 当此属性设置为true时，将打印出logback内部日志信息，实时查看logback运行状态。默认值为false。 -->　　　　
<configuration scan="true" scanPeriod="60 seconds" debug="false">
    <!-- 子节点<contextName>：用来设置上下文名称，每个logger都关联到logger上下文，默认上下文名称为default。但可以使用<contextName>设置成其他名字，用于区分不同应用程序的记录。一旦设置，不能修改 -->
    <contextName>xxx</contextName>
    <!-- 状态监听器  控制台监听日志-->
    <!--<statusListener class="ch.qos.logback.core.status.OnConsoleStatusListener" />-->
    
    <!-- 日志级别变更穿透 -->
    <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator" />
    
    <!-- drop duplicate message是用来过滤重复日志的-->
    <turboFilter class="ch.qos.logback.classic.turbo.DuplicateMessageFilter"/>
    
    <!--<property scope="context" name="logEnv" value="${log.env}" />-->
    <property scope="context" resource="log.properties" />
    <!--<property scope="context" name="log.file.path" value="/usr/local/logs" />-->
    <!--<property scope="context" name="smtp.enable" value="true" />-->
    <!--<property scope="context" name="smtp.host" value="smtp.126.com" />-->
    <!--<property scope="context" name="smtp.port" value="25" />-->
    <!--<property scope="context" name="smtp.username" value="xxx@126.com" />-->
    <!--<property scope="context" name="smtp.password" value="xxx" />-->
    <!--<property scope="context" name="smtp.from" value="xxx@126.com" />-->
    <!--<property scope="context" name="smtp.to" value="xxx@126.com" />-->
    <!--<property scope="context" name="max.history" value="30" />-->
    <!--<property scope="context" name="file.html.size" value="512MB" />-->
    <!--<property scope="context" name="file.html.enable" value="true" />-->
    
    <!-- 多应用区分 -->
    <!--<timestamp key="byDay" datePattern="yyyyMMdd" timeReference="contextBirth" />-->
    
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%green(%d{yyyy-MM-dd HH:mm:ss.SSS}) %magenta([%thread]) %highlight(%-5level) %cyan(%logger{36}) - %msg%n</pattern>
        </encoder>
    </appender>
    
    <!-- <appender name="EVENT_LOG_STDOUT" class="org.eclipse.virgo.medic.log.logback.ReroutingAwareConsoleAppender">
		<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
			<Pattern>[%d{yyyy-MM-dd HH:mm:ss.SSS}] %-28.28thread &lt;%X{medic.eventCode}&gt; %msg %ex%n</Pattern>
		</encoder>
	</appender> -->
    
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.file.path}/query.log</file>
        <append>true</append>
        <!-- set immediateFlush to false for much higher logging throughput -->
        <immediateFlush>true</immediateFlush>

        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- daily rollover -->
            <fileNamePattern>${log.file.path}/query.%d{yyyy-MM-dd}.log.gz</fileNamePattern>

            <!-- keep 30 days' worth of history capped at 3GB total size -->
            <maxHistory>${max.history:-30}</maxHistory>
            <!--<totalSizeCap>3GB</totalSizeCap>-->

        </rollingPolicy>

        <!-- encoders are assigned the type
             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <!-- <appender name="EVENT_LOG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<file>serviceability/eventlogs/eventlog.log</file>
		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<FileNamePattern>serviceability/eventlogs/eventlog_%i.log</FileNamePattern>
			<MinIndex>1</MinIndex>
			<MaxIndex>13</MaxIndex>
		</rollingPolicy>
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<MaxFileSize>10MB</MaxFileSize>
		</triggeringPolicy>
		<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
			<Pattern>[%d{yyyy-MM-dd HH:mm:ss.SSS}] %-28.28thread &lt;%X{medic.eventCode}&gt; %msg %ex%n</Pattern>
		</encoder>
	</appender> -->
    
    <appender name="HTML_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">

        <file>${log.file.path}/query.jsp</file>
        <filter class="ch.qos.logback.core.filter.EvaluatorFilter">
            <evaluator class="ch.qos.logback.classic.boolex.GEventEvaluator">
                <expression>
                    ${file.html.enable} =~ /true/
                </expression>
            </evaluator>
            <OnMismatch>DENY</OnMismatch>
            <OnMatch>ACCEPT</OnMatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <!-- rollover daily -->
            <fileNamePattern>${log.file.path}/query.%d{yyyy-MM-dd}.%i.html</fileNamePattern>
            <maxFileSize>${file.html.size:-512MB}</maxFileSize>
            <maxHistory>1</maxHistory>
            <totalSizeCap>${file.html.size:-512MB}</totalSizeCap>
        </rollingPolicy>
        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
            <layout class="ch.qos.logback.classic.html.HTMLLayout">
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg</pattern>
            </layout>
        </encoder>
    </appender>
    
    <!-- <appender name="LOG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<file>serviceability/logs/log.log</file>
		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<FileNamePattern>serviceability/logs/log_%i.log</FileNamePattern>
			<MinIndex>1</MinIndex>
			<MaxIndex>13</MaxIndex>
		</rollingPolicy>
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<MaxFileSize>10MB</MaxFileSize>
		</triggeringPolicy>
		<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
			<Pattern>[%d{yyyy-MM-dd HH:mm:ss.SSS}] %-5level %-28.28thread %-64.64logger{64} %X{medic.eventCode} %msg %ex%n</Pattern>
		</encoder>
	</appender> -->
	
	 <!--discriminator鉴别器，根据taskId这个key对应的value鉴别日志事件，然后委托给具体appender写日志-->
	
    <!-- <appender name="SIFTED_LOG_FILE" class="ch.qos.logback.classic.sift.SiftingAppender">
		<discriminator>
			<Key>applicationName</Key>
			<DefaultValue>virgo-server</DefaultValue>
		</discriminator>
		<sift>
			<appender name="${applicationName}_LOG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
				<file>serviceability/logs/${applicationName}/log.log</file>
				<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
					<FileNamePattern>serviceability/logs/${applicationName}/log_%i.log</FileNamePattern>
					<MinIndex>1</MinIndex>
					<MaxIndex>13</MaxIndex>
				</rollingPolicy>
				<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
					<MaxFileSize>10MB</MaxFileSize>
				</triggeringPolicy>
				<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
					<Pattern>[%d{yyyy-MM-dd HH:mm:ss.SSS}] %-5level %-28.28thread %-64.64logger{64} %X{medic.eventCode} %msg %ex%n</Pattern>
				</encoder>
			</appender>
		</sift>
	</appender> -->
    
    <!-- marker email send -->
    <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
        <!-- event描述信息 -->
        <discriminator class="ch.qos.logback.classic.sift.MDCBasedDiscriminator">
            <key>host</key>
            <defaultValue>none</defaultValue>
        </discriminator>
        <!-- email  -->
        <smtpHost>${smtp.host}</smtpHost>
        <smtpPort>${smtp.port}</smtpPort>
        <username>${smtp.username}</username>
        <password>${smtp.password}</password>
        <to>${smtp.to}</to>
        <from>${smtp.from}</from>
        <subject>【ERROR】: %logger{0} from %X{host}</subject>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%date %-5level %logger{35} - %message%n</pattern>
        </layout>
        <filter class="ch.qos.logback.core.filter.EvaluatorFilter">
            <evaluator class="ch.qos.logback.classic.boolex.GEventEvaluator">
                <expression>
                    ${smtp.enable} =~ /true/
                </expression>
            </evaluator>
            <OnMismatch>DENY</OnMismatch>
            <OnMatch>ACCEPT</OnMatch>
        </filter>
        <evaluator class="ch.qos.logback.classic.boolex.OnMarkerEvaluator">
            <marker>NOTIFY</marker>
            <!-- you specify add as many markers as you want -->
            <!--<marker>TRANSACTION_FAILURE</marker>-->
        </evaluator>
        <cyclicBufferTracker class="ch.qos.logback.core.spi.CyclicBufferTracker">
            <!-- send just one log entry per email -->
            <bufferSize>1</bufferSize>
        </cyclicBufferTracker>
    </appender>
    
    <appender name="ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.file.path}/query-error.log</file>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- daily rollover -->
            <fileNamePattern>${log.file.path}/query-error.%d{yyyy-MM-dd}.log.gz</fileNamePattern>
            <maxHistory>${max.history:-30}</maxHistory>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <logger name="com.qding" level="${log.level:-info}">
        <appender-ref ref="ERROR" />
    </logger>

    <root level="${log.level:-info}">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
        <appender-ref ref="HTML_FILE" />
        <appender-ref ref="EMAIL" />
    </root>
    <!--<if condition='p("logEnv").contains("dev")'>-->
        <!--<then>-->
            <!--<root level="info">-->
                <!--<appender-ref ref="STDOUT" />-->
            <!--</root>-->
        <!--</then>-->
        <!--<else>-->
            <!--<root level="debug">-->
                <!--<appender-ref ref="STDOUT" />-->
            <!--</root>-->
        <!--</else>-->
    <!--</if>-->
    
    <!-- <logger level="INFO" additivity="false" name="org.eclipse.virgo.medic.eventlog.localized">
		<appender-ref ref="EVENT_LOG_STDOUT" />
		<appender-ref ref="EVENT_LOG_FILE" />
	</logger>
	
	<logger level="INFO" additivity="false" name="org.eclipse.virgo.medic.eventlog.default">
		<appender-ref ref="SIFTED_LOG_FILE" />
		<appender-ref ref="LOG_FILE" />
	</logger>

	<root level="INFO">
		<appender-ref ref="SIFTED_LOG_FILE" />
		<appender-ref ref="LOG_FILE" /> -->
	</root>
    
</configuration>

不需要整理了，拿来主义。加补充！来源于：https://blog.csdn.net/qq_38902677/article/details/88060027

如果看像不好，那就看我补充的。现在的博客，不像以前，认认真真的写。现在是随便出来一堆，写细，写明白的不多。

当然最好的方式是看官方文档：https://logback.qos.ch/manual/configuration.html

下面的图片是官方的原文：反正意思是logback配置文件的加载顺序：

在 in  the  classpath ,即 maven 项目的 resources目录中找。

先找 logback-test.xml  找不到，再找  logback.groovy  ，找不到，再找 logback.xml.

我们常用 logback.xml