public abstract class LogFactory extends Object
LogFactory API,
providing just the common Log lookup methods. This is inspired
by the JCL-over-SLF4J bridge and should be source as well as binary
compatible with all common use of the Commons Logging API (in particular:
with LogFactory.getLog(Class/String) field initializers).
This implementation does not support Commons Logging's original provider
detection. It rather only checks for the presence of the Log4j 2.x API
and the SLF4J 1.7 API in the Spring Framework classpath, falling back to
java.util.logging if none of the two is available. In that sense,
it works as a replacement for the Log4j 2 Commons Logging bridge as well as
the JCL-over-SLF4J bridge, both of which become irrelevant for Spring-based
setups as a consequence (with no need for manual excludes of the standard
Commons Logging API jar anymore either). Furthermore, for simple setups
without an external logging provider, Spring does not require any extra jar
on the classpath anymore since this embedded log factory automatically
delegates to java.util.logging in such a scenario.
Note that this Commons Logging variant is only meant to be used for infrastructure logging purposes in the core framework and in extensions. It also serves as a common bridge for third-party libraries using the Commons Logging API, e.g. Apache HttpClient, Castor and HtmlUnit, bringing them into the same consistent arrangement without any extra bridge jars.
For logging need in application code, prefer direct use of Log4j 2.x
or SLF4J or java.util.logging. Simply put Log4j 2.x or Logback
(or another SLF4J provider) onto your classpath, without any extra bridges,
and let the framework auto-adapt to your choice.
spring-jcl variant)| 构造器和说明 |
|---|
LogFactory() |
| 限定符和类型 | 方法和说明 |
|---|---|
static LogFactory |
getFactory()
已过时。
in favor of
getLog(Class)/getLog(String) |
Log |
getInstance(Class<?> clazz)
已过时。
in favor of
getLog(Class) |
Log |
getInstance(String name)
已过时。
in favor of
getLog(String) |
static Log |
getLog(Class<?> clazz)
Convenience method to return a named logger.
|
static Log |
getLog(String name)
Convenience method to return a named logger.
|
public static Log getLog(Class<?> clazz)
clazz - containing Class from which a log name will be derivedpublic static Log getLog(String name)
name - logical name of the Log instance to be returned@Deprecated public static LogFactory getFactory()
getLog(Class)/getLog(String)LogFactory.getFactory().getInstance(Class/String).@Deprecated public Log getInstance(Class<?> clazz)
getLog(Class)This variant just dispatches straight to getLog(Class).
clazz - containing Class from which a log name will be derived@Deprecated public Log getInstance(String name)
getLog(String)This variant just dispatches straight to getLog(String).
name - logical name of the Log instance to be returned