Kotlin Logging with SLF4J and Logback

Tue, 20 Dec 2022 09:57:16 +0000

Add depedencies in pom.xml or gradle file

<dependency>
    <groupId>io.github.microutils</groupId>
    <artifactId>kotlin-logging-jvm</artifactId>
    <version>${kotlin-logging-jvm.version}</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>${logback-classic.version}</version>
</dependency>

Configure logback.xml file in src/main/resources/logback.xml. The following file configures a File appender. It logs it in a file under $HOME/.gptfx/application.log as it is used for a JavaFX application.

<configuration>
    <appender name="FILE" class="ch.qos.logback.core.FileAppender">
        <file>${user.home}/.gptfx/application.log</file>
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="debug">
        <appender-ref ref="FILE"/>
    </root>
</configuration>

If the project is using Java Modules then add the following two lines to grant access to required apis.

Kotlin on deskriders

Kotlin Logging with SLF4J and Logback