Spring Boot uses commons logging for all internal logging but leaves the underlying log implementation open. Configurations are provided for:

• Logback - when using spring boot starter dependencies, Logback is the default logger
• Log4j2
• Java Util Logging

Subpages

• Java - Spring Boot - Log4j2

Resources

• Spring Boot - https://www.baeldung.com/spring-boot-logging
• Spring - https://docs.spring.io/spring-boot/docs/current/reference/html/features.html#features.logging