SpringBoot 2.2.5 集成 log4j2 参考配置

此配置仅供参考，非最优配置，异步日志等新特性均未开启。

参考资料

1.SpringBoot 集成 log4j2 完美配置解决方案
原文链接：https://blog.csdn.net/weixin_43301156/article/details/89326975

2.SpringBoot 集成 log4j2 附完整配置
原文链接：https://blog.csdn.net/weixin_43301156/article/details/89326975

pom.xml

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.2.5.RELEASE</version>
		<relativePath/> 
	</parent>

	<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
  

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--日志级别以及优先级排序: OFF > FATAL > ERROR > WARN > INFO > DEBUG > TRACE > ALL -->
<!-- status log4j2内部日志级别 -->
<configuration status="INFO">
	<!-- 全局参数 -->
	<Properties>
		<Property name="pattern">%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p %c{1}:%L -%m%n</Property>
		<Property name="displayName">your-log-file</Property>
	</Properties>
	<Appenders>
		<Console name="console" target="SYSTEM_OUT" follow="true">
			<PatternLayout>
				<pattern>${pattern}</pattern>
			</PatternLayout>
		</Console>
		<!-- 文件 每次运行程序会自动清空，由append属性决定 -->
		<File name="error" fileName="${displayName}_error.log" append="false">
			<!-- 指定error 级别的日志 -->
			<ThresholdFilter level="ERROR" onMatch="ACCEPT"
							 onMismatch="DENY" />
			<PatternLayout>
				<pattern>${pattern}</pattern>
			</PatternLayout>
		</File>
		<!-- 滚动文件 -->
		<RollingFile name="rollingFile" fileName="${displayName}.log"
					 filePattern="${displayName}_%d{yyyy-MM-dd}.log">
			<PatternLayout>
				<pattern>${pattern}</pattern>
			</PatternLayout>
			<!-- 按大小划分 -->
			<SizeBasedTriggeringPolicy size="50 MB" />
		</RollingFile>
	</Appenders>
	<Loggers>
		<Logger name="org.springframework" level="WARN" />
		<Logger name="com.test" level="DEBUG" />
		<Root level="DEBUG">
			<AppenderRef ref="console"></AppenderRef>
			<AppenderRef ref="error"></AppenderRef>
			<AppenderRef ref="rollingFile"></AppenderRef>
		</Root>
	</Loggers>
</configuration>

application.yml

logging:
  config: classpath:log4j2.xml

运行结果