一、日志
1、什么是日志通过日志查看程序的运行过程,运行信息,异常信息等
2、配置日志级别日志记录器(Logger)的行为是分等级的。
如下表所示:分为:FATAL、ERROR、WARN、INFO、DEBUG默认情况下,spring boot从控制台打印出来的日志级别只有INFO及以上级别,可以配置日志级别
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| # 设置日志级别 logging: level: root: INFO
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二、Logback日志
spring boot内部使用Logback作为日志实现的框架。
Logback和log4j非常相似,
logback相对于log4j的一些优点:https://blog.csdn.net/caisini_vc/article/details/48551287
1、配置logback日志
删除application.yml中的日志配置安装idea彩色日志插件:grep consoleresources 中创建 logback-spring.xml (默认日志的名字,必须是这个名字)
2、节点说明
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| <property>:定义变量 <appender>:定义日志记录器 <filter>:定义日志过滤器<rollingPolicy>:定义滚动策略<springProfile>:定义日志适配的环境 <root>:根日志记录器
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3、logback-spring.xml
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| <?xml version="1.0" encoding="UTF-8"?> <configuration scan="true" scanPeriod="10 seconds">
<contextName>logback</contextName> <property name="log.path" value="D:/log/edu" />
<property name="CONSOLE_LOG_PATTERN" value="%yellow(%date{yyyy-MM-dd HH:mm:ss}) |%highlight(%-5level) |%blue(%thread) |%blue(%file:%line) |%green(%logger) |%cyan(%msg%n)"/>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender"> <filter class="ch.qos.logback.classic.filter.ThresholdFilter"> <level>INFO</level> </filter> <encoder> <Pattern>${CONSOLE_LOG_PATTERN}</Pattern> <charset>UTF-8</charset> </encoder> </appender>
<appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>${log.path}/log_info.log</file> <encoder> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> <charset>UTF-8</charset> </encoder> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>${log.path}/info/log-info-%d{yyyy-MM-dd}.%i.log</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <maxHistory>15</maxHistory> </rollingPolicy> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>INFO</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender>
<appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>${log.path}/log_warn.log</file> <encoder> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> <charset>UTF-8</charset> </encoder> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>${log.path}/warn/log-warn-%d{yyyy-MM-dd}.%i.log</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <maxHistory>15</maxHistory> </rollingPolicy> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>warn</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender>
<appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <file>${log.path}/log_error.log</file> <encoder> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> <charset>UTF-8</charset> </encoder> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>${log.path}/error/log-error-%d{yyyy-MM-dd}.%i.log</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <maxHistory>15</maxHistory> </rollingPolicy> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>ERROR</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender>
<springProfile name="dev"> <logger name="com.guli" level="INFO" />
<root level="INFO"> <appender-ref ref="CONSOLE" /> <appender-ref ref="INFO_FILE" /> <appender-ref ref="WARN_FILE" /> <appender-ref ref="ERROR_FILE" /> </root> </springProfile>
<springProfile name="pro">
<root level="INFO"> <appender-ref ref="CONSOLE" /> <appender-ref ref="DEBUG_FILE" /> <appender-ref ref="INFO_FILE" /> <appender-ref ref="ERROR_FILE" /> <appender-ref ref="WARN_FILE" /> </root> </springProfile>
</configuration>
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