log4j2

I always forget it, so make a note here.

jar file

At a minimum, the following files are required. log4j-core-2.13.3.jar log4j-api-2.13.3.jar (2.13.3 is the latest version at the time of writing this)

★ If you want to connect with commons-logging, you also need log4j-jcl-2.13.3.jar. Click here for details: https://stackoverflow.com/questions/41462181/commons-logging-with-log4j2

pom.xml

pom.xml

<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-core</artifactId>
	<version>2.13.3</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-api -->
<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-api</artifactId>
	<version>2.13.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-jcl -->
<!-- https://stackoverflow.com/questions/41462181/commons-logging-with-log4j2 -->
<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-jcl</artifactId>
	<version>2.13.3</version>
</dependency>

log4j2.xml

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE project>
<Configuration status="off">
	<Properties>
		<Property name="format1">%d{yyyy/MM/dd HH:mm:ss.SSS} [%t] %-6p %c{10} %m%n</Property>
	</Properties>
	<Appenders>
		<Console name="Console" target="SYSTEM_OUT">
			<PatternLayout>
				<pattern>${format1}</pattern>
			</PatternLayout>
		</Console>
	</Appenders>

	<Loggers>
		<Root level="trace">
			<AppenderRef ref="Console" />
		</Root>
	</Loggers>
</Configuration>

Reference link: https://qiita.com/mato-599/items/979e10135c1cb54ceda9 https://qiita.com/pica/items/f801c74848f748f76b58

that's all