How to adjust logback loggers

Question

In my classes I utilize loggers like the following:

private static org.slf4j.Logger logger = LoggerFactory.getLogger(SpecParser.class);

Now I would like to switch off certain loggers, ideally in a configuration file. For example above logger should not log debug messages. Is this possible? Below my try, that did not work. It is still printing all messages to stdout:

logback.xml:

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

 <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
        <Pattern>%d{yyyy-MM-dd_HH:mm:ss.SSS} %-5level %logger{36} - %msg%n
                </Pattern>
    </encoder>
 </appender>

 <appender name="FILE"
    class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>c:/mkyongapp.log</file>
    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
       <Pattern>%d{yyyy-MM-dd_HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
           </Pattern>
    </encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
        <FileNamePattern>log.%i.log.zip</FileNamePattern>
        <MinIndex>1</MinIndex>
        <MaxIndex>10</MaxIndex>
    </rollingPolicy>

    <triggeringPolicy
        class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
        <MaxFileSize>2MB</MaxFileSize>
    </triggeringPolicy>

  </appender>


  <logger name="de.tki.hbci.specification.SpecParser" level="WARN" />

  <root level="INFO">
    <appender-ref ref="FILE" />
    <appender-ref ref="STDOUT" />
  </root>

</configuration>

John Kelty John Kelty · Accepted Answer · 2016-04-17T13:42:58

Please check for other log files on the classpath that might have been read in before this logback.xml file. Depending on the usage, something earlier in the classpath might preempt this file, either in a plain text file or inside a JAR.

How to adjust logback loggers

1 Answers