java中log4j2配置，自己記錄一下，在eclipse中新建xml檔案，然後複製這段程式碼

<?xml version="1.0" encoding="UTF-8"?>

<configuration status="OFF">
	<appenders>
		<Console name="myConsole" target="SYSTEM OUT">
			<PatternLayout pattern="[%-5p][%d{yyyy-MM-dd HH:mm:ss}] [%c %L] %m%n" />
		</Console>
		<File name="myLogFile" fileName="log/test.log" append="true">
			<PatternLayout pattern="[%-5p][%d{yyyy-MM-dd HH:mm:ss}] [%c %L] %m%n" />
		</File>
		<RollingFile name="myRollingFile" fileName="logs/app.log"
					filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.log.gz">
			<PatternLayout pattern="[%-5p][%d{yyyy-MM-dd HH:mm:ss}] [%c %L] %m%n" />
			<SizeBasedTriggeringPolicy size="2KB"/>
		</RollingFile>
	</appenders>
	
	<loggers>
		<!-- 
		<logger name="全限定類名或介面名" level="info">
			<appender-ref ref="myConsole"/>
		</logger>
		 -->
		 <root level="trace">
		 	<appender-ref ref="myConsole" />
		 	<appender-ref ref="myLogFile" />
		 	<appender-ref ref="myRollingFile" />
		 </root>
	</loggers>
</configuration>