logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration xmlns="http://ch.qos.logback/xml/ns/logback"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://ch.qos.logback/xml/ns/logback https://raw.githubusercontent.com/enricopulatzo/logback-XSD/master/src/main/xsd/logback.xsd">
	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
		<encoder>
			<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
			</pattern>
		</encoder>
		<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
			<level>WARN</level>
		</filter>
	</appender>
	
	<appender name="File" class="ch.qos.logback.core.FileAppender">
		<file>out.log</file>
		<append>false</append>
		<encoder>
			<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
			</pattern>
		</encoder>
	</appender>

	<root level="DEBUG">
		<appender-ref ref="STDOUT" />
		<appender-ref ref="File" />
	</root>
</configuration>