Package org.apache.commons.logging

Spring's variant of the Commons Logging API: with special support for Log4J 2, SLF4J and java.util.logging.

See: Description

Interface Summary

Interface	Description
Log	A simple logging interface abstracting logging APIs.

Class Summary

Class	Description
LogFactory	A minimal incarnation of Apache Commons Logging's LogFactory API, providing just the common Log lookup methods.
LogFactory.JavaUtilDelegate
LogFactory.JavaUtilLog
LogFactory.LocationResolvingLogRecord
LogFactory.Log4jDelegate
LogFactory.Log4jLog
LogFactory.Slf4jDelegate
LogFactory.Slf4jLocationAwareLog
LogFactory.Slf4jLog<T extends Logger>

Enum Summary

Enum	Description
LogFactory.LogApi

Package org.apache.commons.logging Description

Spring's variant of the Commons Logging API: with special support for Log4J 2, SLF4J and java.util.logging.

This is a custom bridge along the lines of jcl-over-slf4j. You may exclude spring-jcl and switch to jcl-over-slf4j instead if you prefer the hard-bound SLF4J bridge. However, Spring's own bridge provides a better out-of-the-box experience when using Log4J 2 or java.util.logging, with no extra bridge jars necessary, and also easier setup of SLF4J with Logback (no JCL exclude, no JCL bridge).

Log is an unmodified repackaging. However, LogFactory is a very different implementation which is minimized and optimized for Spring's purposes, detecting Log4J 2.x and SLF4J 1.7 in the framework classpath and falling back to java.util.logging. If you run into any issues with this implementation, consider excluding spring-jcl and switching to the standard commons-logging artifact or to jcl-over-slf4j.

Note that this Commons Logging bridge is only meant to be used for framework logging purposes, both in the core framework and in extensions. For applications, prefer direct use of Log4J/SLF4J or java.util.logging.