The Simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks, such as java.util.logging, logback and log4j. SLF4J allows the end-user to plug in the desired logging framework at deployment time. Note that SLF4J-enabling your library/application implies the addition of only a single mandatory dependency, namely slf4j-api-2.0.0-alpha2-SNAPSHOT.jar.
http://www.slf4j.org/manual.html
原文：https://www.cnblogs.com/flowerbear/p/12359880.html