logback xml configuration example

logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="30 seconds" debug="false">
  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <charset>utf-8</charset>
      <pattern>%date [%thread] %-5level %logger{39} - %msg%n</pattern>
    </encoder>
  </appender>
  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <!--See also http://logback.qos.ch/manual/appenders.html#RollingFileAppender-->
    <file>${catalina.base}/logs/error.log</file>
    <encoder>
      <charset>utf-8</charset>
      <pattern>%date %-5level %logger{39} [%file:%line] - %msg%n%ex{full}</pattern>
    </encoder>
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>ERROR</level>
    </filter>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <!-- daily rollover -->
      <FileNamePattern>${catalina.base}/logs/error.%d{yyyy-MM-dd}.log.gz</FileNamePattern>
      <!-- keep 30 days' worth of history -->
      <maxHistory>30</maxHistory>
    </rollingPolicy>
    <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
      <maxFileSize>10MB</maxFileSize>
    </triggeringPolicy>
  </appender>
  <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
    <!--See also http://logback.qos.ch/manual/appenders.html#SMTPAppender-->
    <smtpHost>localhost</smtpHost>
    <from>Alert&lt;from@example.com&gt;</from>
    <to>to@example.com</to><!-- additional destinations are possible -->
    <subject>ERROR: %logger{20} - %m</subject>
    <layout class="ch.qos.logback.classic.PatternLayout">
      <pattern>%date %-5level %logger{39} [%file:%line] - %msg%n%ex{full}</pattern>
    </layout>
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>ERROR</level>
    </filter>
  </appender>
  <!-- Note that unlike log4j, logback-classic does not close nor remove any previously referenced appenders when configuring a given logger. -->
  <logger name="org.hibernate.validator.internal.util.Version" level="WARN"/>
  <logger name="org.apache.coyote.http11.Http11NioProtocol" level="WARN"/>
  <logger name="org.crsh.plugin" level="WARN"/>
  <logger name="org.apache.tomcat.util.net.NioSelectorPool" level="WARN"/>
  <logger name="org.apache.catalina.startup.DigesterFactory" level="ERROR"/>
  <logger name="org.apache.catalina.util.LifecycleBase" level="ERROR"/>
  <logger name="org.eclipse.jetty.util.component.AbstractLifeCycle" level="ERROR"/>
  <logger name="org.springframework" level="ERROR"/>
  <logger name="org.jasig.cas" level="INFO"/>
  <logger name="org.jasig.cas.web.view.CasReloadableMessageBundle" level="ERROR"/>
  <logger name="org.pac4j.oauth.client" level="WARN"/>
  <root level="INFO">
    <appender-ref ref="CONSOLE"/>
    <appender-ref ref="FILE"/>
    <appender-ref ref="EMAIL"/>
  </root>
</configuration>