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情景：SpringBoot项目中需要把控制台日志保存下来。
实现方法：
配置如下：
logging: config: classpath:logback-spring-prod.xml
这个文件是记录控制台打印日志保存的路径配置如下：
<?xml version="1.0" encoding="UTF-8"?>
<!-- 分级别异步文件日志输出配置 -->
<configuration>
<!-- 日志级别 -->
<property name="logLevel" value="INFO"></property>
<!-- 日志地址 -->
<property name="logPath" value="/usr/server/shop/logs/"></property>
<property name="logPathDebug" value="/usr/server/shop/logs/debug/"></property>
<property name="logPathInfo" value="/usr/server/shop/logs/info/"></property>
<property name="logPathWarn" value="/usr/server/shop/logs/warn/"></property>
<property name="logPathError" value="/usr/server/shop/logs/error/"></property>
<!-- 最大保存时间 -->
<property name="maxHistory" value="30"/>
<!-- 异步缓冲队列的深度,该值会影响性能.默认值为256 -->
<property name="queueSize" value="512"></property>
<!--日志文件名前缀-->
<property name="name" value="shop_prod"></property>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%black(%contextName -) %red(%d{yyyy-MM-dd HH:mm:ss}) %green([%thread]) %highlight(%-5level) %boldMagenta(%logger{60}) - %gray(%msg%n)</pattern>
</encoder>
</appender>
<appender name="FILE_DEBUG" class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>DEBUG</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<file>${logPathDebug}/${name}_debug.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logPathDebug}/${name}_debug.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<maxHistory>${maxHistory}</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>50MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
</encoder>
</appender>
<appender name="FILE_INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>INFO</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<file>${logPathInfo}/${name}_info.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logPathInfo}/${name}_info.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<maxHistory>${maxHistory}</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>50MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
</encoder>
</appender>
<appender name="FILE_WARN" class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>WARN</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<file>${logPathWarn}/${name}_warn.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logPathWarn}/${name}_warn.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<maxHistory>${maxHistory}</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>50MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
</encoder>
</appender>
<appender name="FILE_ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<file>${logPathError}/${name}_error.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${logPathError}/${name}_error.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
<maxHistory>${maxHistory}</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>50MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
</encoder>
</appender>
<appender name="ASYNC_LOG_DEBUG" class="ch.qos.logback.classic.AsyncAppender">
<!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
<discardingThreshold>0</discardingThreshold>
<!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
<queueSize>${queueSize}</queueSize>
<appender-ref ref="FILE_DEBUG"/>
</appender>
<appender name="ASYNC_LOG_INFO" class="ch.qos.logback.classic.AsyncAppender">
<!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
<discardingThreshold>0</discardingThreshold>
<!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
<queueSize>${queueSize}</queueSize>
<appender-ref ref="FILE_INFO"/>
</appender>
<appender name="ASYNC_LOG_WARN" class="ch.qos.logback.classic.AsyncAppender">
<!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
<discardingThreshold>0</discardingThreshold>
<!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
<queueSize>${queueSize}</queueSize>
<appender-ref ref="FILE_WARN"/>
</appender>
<appender name="ASYNC_LOG_ERROR" class="ch.qos.logback.classic.AsyncAppender">
<!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
<discardingThreshold>0</discardingThreshold>
<!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
<queueSize>${queueSize}</queueSize>
<appender-ref ref="FILE_ERROR"/>
</appender>
<root level="${logLevel}">
<!-- appender referenced after it is defined -->
<appender-ref ref="STDOUT"/>
<appender-ref ref="ASYNC_LOG_DEBUG"/>
<appender-ref ref="ASYNC_LOG_INFO"/>
<appender-ref ref="ASYNC_LOG_WARN"/>
<appender-ref ref="ASYNC_LOG_ERROR"/>
</root>
</configuration>注意：
<property name="logPath" value="/usr/server/shop/logs/"></property>
中日志存放的路径在/usr/server/shop/logs/下存放。
这个问题相对很简单，只需要完成两个步骤
在pom中需要引用lombok依赖,版本跟随你的springboot夫版本即可
<dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency>
<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds"
debug="false">
<contextName>StudentContext</contextName>
<property name="log.path" value="./logs" />
<!--输出到控制台 -->
<appender name="console" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<!-- 全部日志 -->
<appender name="all" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${log.path}/student/student.%d{yyyy-MM-dd}.log</fileNamePattern>
<maxHistory>60</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<!-- 输出到warn -->
<appender name="warn" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${log.path}/student/student.warn.%d{yyyy-MM-dd}.log</fileNamePattern>
<maxHistory>60</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
<charset>UTF-8</charset>
</encoder>
<filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印WARN日志 -->
<level>WARN</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<!-- 输出到error -->
<appender name="error" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${log.path}/student/student.error.%d{yyyy-MM-dd}.log</fileNamePattern>
<maxHistory>60</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
<charset>UTF-8</charset>
</encoder>
<filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印ERROR日志 -->
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<root level="info">
<appender-ref ref="console" />
<appender-ref ref="all" />
<appender-ref ref="warn" />
<appender-ref ref="error" />
</root>
</configuration>log4j输出日志的文件，将其放在resources下即可，注意fileNamePattern这个标签中的东西换成标识你微服务作用的，比如我写的学生管理系统，所以用的是student
logging: level: com.netflix.discovery.shared.resolver.aws.ConfigClusterResolver: WARN config: classpath:logback-common.xml
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