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I have a problem with configuration on Logback in a Spring Boot application. I want my consoleAppender to look like the default Spring Boot console appender. How to inherit pattern from Spring Boot default console appender?
Below is my consoleAppender configuration
<appender name="consoleAppender" class="ch.qos.logback.core.ConsoleAppender">
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern class="org.">
%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
</Pattern>
</layout>
</appender>
278
The default logging configuration in Spring Boot is a Logback implementation at the info level for logging the output to console. The first info log is printed, followed by a seven-line banner of Spring and then the next info log. The debug statement is suppressed.
Spring Boot's default logging framework is Logback. Your application code should interface only with the SLF4J facade so that it's easy to switch to an alternative framework if necessary. Log4j2 is newer and claims to improve on the performance of Logback.
Spring Boot has a LoggingSystem abstraction that attempts to configure logging based on the content of the classpath. If Logback is available, it is the first choice. You can also set the location of a file to which to write the log (in addition to the console) by using "logging. file".
To make Spring Boot write its log to disk, set the path and filename. With this configuration, Spring Boot will write to the console and also to a log file called spring. log , at the path you specify.
Once you have included the default configuration, you can use its values in your own logback-spring.xml configuration:
<?xml version="1.0" encoding="UTF-8"?> <configuration scan="true"> <!-- use Spring default values --> <include resource="org/springframework/boot/logging/logback/defaults.xml"/> <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender"> <encoder> <pattern>${CONSOLE_LOG_PATTERN}</pattern> <charset>utf8</charset> </encoder> </appender> … </configuration> You can find Spring Boot logback console logging pattern in defaults.xml file:
spring-boot-1.5.0.RELEASE.jar/org/springframework/boot/logging/logback/defaults.xml
Console pattern:
<property name="CONSOLE_LOG_PATTERN" value="${CONSOLE_LOG_PATTERN:-%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}}"/> 
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter" />
<conversionRule conversionWord="wex" converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter" />
<conversionRule conversionWord="wEx" converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter" />
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern>
%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(%5p) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n%wEx
</Pattern>
</layout>
</appender>
<root level="info">
<appender-ref ref="STDOUT" />
</root>
</configuration>
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