实际打印log的地方
logger.trace("-- this is a trace info");
logger.debug("-- this is a debug info");
logger.info("-- this is an info info");
logger.warn("-- this is a warn info");
logger.error("-- this is an error info");
Situation 1
只有一个root控制appender的日志等级
logback-spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<property name="LOG_HOME" value="log/" />
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</encoder>
</appender>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<FileNamePattern>${LOG_HOME}/base-springboot-web-logback.log.%d{yyyy-MM-dd}</FileNamePattern>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</encoder>
<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
<MaxFileSize>50MB</MaxFileSize>
</triggeringPolicy>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT" />
<appender-ref ref="FILE" />
</root>
</configuration>
实际的log如下
017-11-11 02:08:25.211 [main] WARN c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is a warn info
2017-11-11 02:08:25.211 [main] INFO c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an info info
2017-11-11 02:08:25.211 [main] ERROR c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an error info
Situation 2
在logback-spring.xml中添加一个logger,level为debug,其实可以不设置level,默认level即为debug。
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<property name="LOG_HOME" value="log/" />
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</encoder>
</appender>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<FileNamePattern>${LOG_HOME}/base-springboot-web-logback.log.%d{yyyy-MM-dd}</FileNamePattern>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</encoder>
<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
<MaxFileSize>50MB</MaxFileSize>
</triggeringPolicy>
</appender>
<logger name="com.lerr.basespringbootweb"/>
<root level="INFO">
<appender-ref ref="STDOUT" />
<appender-ref ref="FILE" />
</root>
</configuration>
输出如下,会看到debug的消息也打印到日志了
2017-11-11 21:30:44.174 [main] DEBUG c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is a debug info
2017-11-11 21:30:44.174 [main] INFO c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an info info
2017-11-11 21:30:44.174 [main] WARN c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is a warn info
2017-11-11 21:30:44.174 [main] ERROR c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an error info
Situation 3
logback-spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<property name="LOG_HOME" value="log/" />
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</encoder>
</appender>
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<FileNamePattern>${LOG_HOME}/base-springboot-web-logback.log.%d{yyyy-MM-dd}</FileNamePattern>
<MaxHistory>30</MaxHistory>
</rollingPolicy>
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
</encoder>
<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
<MaxFileSize>50MB</MaxFileSize>
</triggeringPolicy>
</appender>
<logger name="com.lerr.basespringbootweb" level="DEBUG">
<appender-ref ref="STDOUT" />
</logger>
<root level="INFO">
<appender-ref ref="STDOUT" />
<appender-ref ref="FILE" />
</root>
</configuration>
output
2017-11-11 21:46:31.081 [main] DEBUG c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is a debug info
2017-11-11 21:46:31.081 [main] DEBUG c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is a debug info
2017-11-11 21:46:31.083 [main] INFO c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an info info
2017-11-11 21:46:31.083 [main] INFO c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an info info
2017-11-11 21:46:31.083 [main] WARN c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is a warn info
2017-11-11 21:46:31.083 [main] WARN c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is a warn info
2017-11-11 21:46:31.083 [main] ERROR c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an error info
2017-11-11 21:46:31.083 [main] ERROR c.l.basespringbootweb.BaseSpringbootWebApplication - -- this is an error info
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