程序包 org.apache.commons.logging.impl
Spring's variant of the Commons Logging API: with special support for Log4J 2, SLF4J and
java.util.logging
. This impl
package is only present for binary compatibility with existing Commons Logging usage, e.g. in Commons Configuration. NoOpLog
can be used as a Log
fallback instance, and SimpleLog
is not meant to work (issuing a warning when used).