JavaNotes.md

How to enable slf4j logging with log4j2 in Java

Include the following libraries in build.gradle

ext {
    slf4jVersion = "1.7.32"
    log4j2Version = "2.17.1"
}

dependencies {
    implementation("org.slf4j:slf4j-api:$slf4jVersion")
    implementation("org.apache.logging.log4j:log4j-slf4j-impl:$log4j2Version")
    implementation("org.apache.logging.log4j:log4j-api:$log4j2Version")
    implementation("org.apache.logging.log4j:log4j-core:$log4j2Version")
}

Add the following log4j2.xml file in src/main/resources directory

<Configuration status="INFO">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
        </Console>
        <File name="MyFile" fileName="all.log" immediateFlush="false" append="false">
            <PatternLayout pattern="%d{yyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
        </File>
    </Appenders>
    <Loggers>
        <Root level="debug">
            <AppenderRef ref="Console" />
            <AppenderRef ref="MyFile"/>
        </Root>
    </Loggers>
</Configuration>