Log4j2的Configuration详解

引言

官方配置文档：https://logging.apache.org/log4j/2.x/manual/filters.html

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节点

Parameters

Attribute Name	Description
advertiser	(Optional) The Advertiser plugin name which will be used to advertise individual FileAppender or SocketAppender configurations. The only Advertiser plugin provided is 'multicastdns".
dest	Either “err” for stderr, “out” for stdout, a file path, or a URL.
monitorInterval	设置配置文件的动态加载时间的，单位是秒 The minimum amount of time, in seconds, that must elapse before the file configuration is checked for changes. Log4j has the ability to automatically detect changes to the configuration file and reconfigure itself.for example, mean the configuration file will be checked for changes only after at least 30 seconds have elapsed. The minimum interval is 5 seconds.
name	The name of the configuration.
packages	Use of the packages attribute is deprecated and will be removed in Log4j 3.0. Plugins should be processed with the Log4j annotation processor. A comma separated list of package names to search for plugins. Plugins are only loaded once per classloader so changing this value may not have any effect upon reconfiguration.
schema	Identifies the location for the classloader to located the XML Schema to use to validate the configuration. Only valid when strict is set to true. If not set no schema validation will take place.
shutdownHook	Specifies whether or not Log4j should automatically shutdown when the JVM shuts down. The shutdown hook is enabled by default but may be disabled by setting this attribute to “disable”
shutdownTimeout	Specifies how many milliseconds appenders and background tasks will get to shutdown when the JVM shuts down. Default is zero which mean that each appender uses its default timeout, and don’t wait for background tasks. Not all appenders will honor this, it is a hint and not an absolute guarantee that the shutdown procedure will not take longer. Setting this too low increase the risk of losing outstanding log events not yet written to the final destination. See LoggerContext.stop(long, java.util.concurrent.TimeUnit). (Not used if shutdownHook is set to “disable”.)
status	指定log4j本身的打印日志的级别 The level of internal Log4j events that should be logged to the console. Valid values for this attribute are “off”, “trace”, “debug”, “info”, “warn”, “error”, “fatal”, and “all”. Log4j will log details about initialization, rollover and other internal actions to the status logger. Setting status="trace" is one of the first tools available to you if you need to troubleshoot log4j.(Alternatively, setting system property log4j2.debug will also print internal Log4j2 logging to the console, including internal logging that took place before the configuration file was found.)
strict	Enables the use of the strict XML format. Not supported in JSON configurations.
verbose	Enables diagnostic information while loading plugins.

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场景1：

<Configuration status="info" monitorInterval="10">
Configuration>