SpringBoot(八)-- 日志
一、介绍
SpringBoot内部使用Commons Logging来记录日志,但也保留外部接口可以让一些日志框架来进行实现,例如Java Util Logging,Log4J2还有Logback。如果你想用某一种日志框架来进行实现的话,就必须先配置,默认情况下,spring boot使用Logback作为日志实现的框架。
${LOG_PATH}, Spring Boot配置文件中logging.path的值 。
配置logging.level.*来具体输出哪些包的日志级别。
logging.level.root=INFO
logging.level.org.springframework.web=DEBUG
logging.level.org.hibernate=ERROR
将日志输出到文件中
logging.path=D:\\demo
logging.file=demo.log
logging.level.root=info
二、配置文件,application.properties
logging.config=classpath:logback-spring.xml
logging.path=D:/log
注:这里定义日志文件的名称为logback-spring.xml,如果定义为logback.xml的话,打印日志的时候会生成LOG_PATH_IS_UNDEFINED文件夹。
三、logback-spring.xml文件内容
<!-- Logback configuration. See http://logback.qos.ch/manual/index.html --> <configuration scan="true" scanPeriod="10 seconds"> <include resource="org/springframework/boot/logging/logback/base.xml" /> <appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>${LOG_PATH}/info.log</File> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>${LOG_PATH}/info-%d{yyyyMMdd}.log.%i</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>500MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <maxHistory>2</maxHistory> </rollingPolicy> <layout class="ch.qos.logback.classic.PatternLayout"> <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} -%msg%n </Pattern> </layout> </appender> <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <filter class="ch.qos.logback.classic.filter.ThresholdFilter"> <level>ERROR</level> </filter> <File>${LOG_PATH}/error.log</File> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>${LOG_PATH}/error-%d{yyyyMMdd}.log.%i </fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>500MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <maxHistory>2</maxHistory> </rollingPolicy> <layout class="ch.qos.logback.classic.PatternLayout"> <Pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} -%msg%n </Pattern> </layout> </appender> <root level="INFO"> <appender-ref ref="INFO_FILE" /> <appender-ref ref="ERROR_FILE" /> </root> <logger name="org.springframework.boot" level="DEBUG"/> </configuration>
四.源码下载
https://gitee.com/xbq168/spring-boot-learn