A basic Logback configuration template for use in an IntelliJ IDEA file template. Very easily used as a generic template as well.

logback.xml

<configuration scan="true" scanPeriod="1 minute">
  <variable
    name="logPattern"
    value="%-30(%d{MMM dd YYYY HH:mm:ss.SSS} [%thread]) %-5level %logger{5} [%file:%line] - %msg%n" />
  
  <!--
    The base name of the log file. For "example.log" this would
    simply be "example". Or if it were "logs/example.log" then
    "logs/example".
    
    The default is set to write to Tomcat's logging directory in a file
    named after the IntelliJ IDEA project.
  -->
  <variable
    name="logname"
    value="\${catalina.base}/logs/${PROJECT_NAME}" />

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <!-- encoders are assigned the type
         ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
    <encoder>
      <pattern>\${logPattern}</pattern>
    </encoder>
  </appender>
  
  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <!--
      See http://logback.qos.ch/manual/appenders.html for details.
    -->
    <file>\${logname}.log</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>\${logname}-%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
      <maxHistory>30</maxHistory>
      <timeBasedFileNamingAndTriggeringPolicy
        class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
        <maxFileSize>100MB</maxFileSize>
      </timeBasedFileNamingAndTriggeringPolicy>
    </rollingPolicy>
    <encoder>
      <pattern>\${logPattern}</pattern>
    </encoder>
  </appender>

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

${logname}.log
Where is configured logname ?

see line #14.