Log has log facade and log implementation.
Log facade includes JCL, SLF4J, and Jboss-Logging
Logging implementation contains: log4j logback/log4j2 / Java. Util. Logging (jul)
Spring uses JCL: Java Common Logging by default
Springboot uses LogBack and SLf4J by default
Hibernate uses Jboss-Logging by default
The Springboot-starter dependency automatically references Springboot-starter-logging
Springboot – starter – logging is specially used for processing the log, it will automatically introduction: log4j/jul/logback/JCL slf4j jar
Jcl-over-slf4j and log4j-over-slf4j are intermediate packages, and SlF4J is used by Springboot
When SpringBoot introduces other frameworks, dependencies are required to exclude their own logging dependencies. For example, Spring excludes the common-logging dependency.
Toggle options for other logging frameworks:
spring-boot-starter-log4j2
spring-boot-starter-logging
Application.properties Modifies the default springBoot configuration:
logging.level
Logging.path (if not specified, springboot.log will be generated under the current project)
logging.file=G:\springboot.log
Logging. path=/spring/log (create the spring and log folders locally. If logging.file is not specified, spring. Log will be generated in the log directory)
Logging.pattern. Console Console output format
Logging.pattern. file File output format
Docs. Spring. IO/spring – the boot…
Blog.csdn.net/weixin_4366…
Docs. Spring. IO/spring – the boot…
| Logging System | Customization |
|---|---|
|
Logback |
|
|
Log4j2 |
|
|
JDK (Java Util Logging) |
|