"Manual" configuration of multiple logback encoders and appenders.

TestLogConfig.groovy

package testpackage

import ch.qos.logback.classic.Level
import ch.qos.logback.classic.Logger
import ch.qos.logback.classic.LoggerContext
import ch.qos.logback.classic.encoder.PatternLayoutEncoder
import ch.qos.logback.core.ConsoleAppender
import ch.qos.logback.core.rolling.RollingFileAppender
import ch.qos.logback.core.rolling.TimeBasedRollingPolicy

import org.slf4j.LoggerFactory

class TestLogConfig {

  public static void main(String[] args) {
    LoggerContext logCtx = LoggerFactory.getILoggerFactory()

    PatternLayoutEncoder logEncoder = new PatternLayoutEncoder()
    logEncoder.setContext(logCtx)
    logEncoder.setPattern('%-12date{YYYY-MM-dd HH:mm:ss.SSS} %-5level - %msg%n')
    logEncoder.start()

    ConsoleAppender logConsoleAppender = new ConsoleAppender()
    logConsoleAppender.setContext(logCtx)
    logConsoleAppender.setName('console')
    logConsoleAppender.setEncoder(logEncoder)
    logConsoleAppender.start()

    logEncoder = new PatternLayoutEncoder()
    logEncoder.setContext(logCtx)
    logEncoder.setPattern('%-12date{YYYY-MM-dd HH:mm:ss.SSS} %-5level - %msg%n')
    logEncoder.start()

    RollingFileAppender logFileAppender = new RollingFileAppender()
    logFileAppender.setContext(logCtx)
    logFileAppender.setName('logFile')
    logFileAppender.setEncoder(logEncoder)
    logFileAppender.setAppend(true)
    logFileAppender.setFile('logs/logfile.log')

    TimeBasedRollingPolicy logFilePolicy = new TimeBasedRollingPolicy()
    logFilePolicy.setContext(logCtx)
    logFilePolicy.setParent(logFileAppender)
    logFilePolicy.setFileNamePattern('logs/logfile-%d{yyyy-MM-dd_HH}.log')
    logFilePolicy.setMaxHistory(7)
    logFilePolicy.start()

    logFileAppender.setRollingPolicy(logFilePolicy)
    logFileAppender.start()

    Logger log = logCtx.getLogger("Main")
    log.additive = false
    log.level = Level.INFO
    log.addAppender(logConsoleAppender)
    log.addAppender(logFileAppender)
  }
}