log4j2.xml文件配置实例：<?xml version="1.0" encoding="UTF-8"?>
<configuration status="off"><properties><!-- File base path --><property name="LOG_HOME">/logs</property><!-- App server name --><property name="SERVER_NAME">cloud</property><!-- Backup file path --><property name="BACKUP_HOME">{LOG_HOME}/backup</property></properties><appenders><!-- Console --><Console name="Console" target="SYSTEM_OUT"><PatternLayout pattern="%d{HH:mm:ss.SSS} %-5level %logger{36}.%M@%L - %msg%n"/><!--<PatternLayout pattern="%d{HH:mm:ss.SSS} %-5level %C{5} (%F:%L) - %msg%n"/>--></Console><!-- RollingFile --><RollingRandomAccessFile name="RollingFile"fileName="${LOG_HOME}/${SERVER_NAME}"filePattern="${LOG_HOME}/${SERVER_NAME}.%d{yyyy-MM-dd-HH}.log"><PatternLayout pattern="%date{yyyy-MM-dd HH:mm:ss.SSS} %-5level %logger{36}.%M@%L - %msg%n"/><Policies><!--<TimeBasedTriggeringPolicy modulate="true" interval="24"/>--><TimeBasedTriggeringPolicy/><SizeBasedTriggeringPolicy size="200 MB"/></Policies><DefaultRolloverStrategy max="100"/></RollingRandomAccessFile></appenders><loggers><!-- Spring Loggers --><logger name="org.springframework" level="info"/><logger name="org.springframework.beans" level="info"/><logger name="org.springframework.core" level="info"/><logger name="org.springframework.context" level="info"/><logger name="org.springframework.web" level="info"/><logger name="org.springframework.batch" level="info"/><logger name="org.springframework.integration" level="info"/><!-- Apache Loggers --><logger name="org.apache" level="info"/><logger name="org.apache.http" level="info"/><logger name="org.apache.shiro" level="info"/><logger name="org.apache.solr" level="info"/><logger name="org.apache.lucene" level="info"/><logger name="org.apache.tomcat" level="info"/><logger name="org.apache.commons" level="info"/><!-- MyBatis Loggers --><logger name="org.mybatis" level="info"/><logger name="org.apache.ibatis" level="info"/><!-- Alibaba Loggers --><logger name="com.alibaba" level="info"/><logger name="com.alibaba.druid" level="info"/><!-- App Loggers --><logger name="com.code.platform" level="debug" additivity="false"><appender-ref ref="Console"/><appender-ref ref="RollingFile"/></logger><!-- Root Logger --><root level="info"><appender-ref ref="Console"/><appender-ref ref="RollingFile"/></root></loggers>
</configuration>