[logback-user] "#logback.classic pattern:" spam in 1.0.2

Andreas Kruthoff andreas.kruthoff at nexustelecom.com
Wed May 2 10:30:17 CEST 2012

On 05/02/2012 09:53 AM, tsuna wrote:
> Hi list,
> I just upgraded from logback-{core,classic} 1.0.0 to 1.0.2 and now
> whenever I start my application I see a message like this one:
> #logback.classic pattern: %msg%n
> in my logs.  Like, really, it's literally logging the format string
> itself.  Has a debug statement slipped in the 1.0.2 release?
> Here's the configuration of the app, in case you need it:
> <?xml version="1.0" encoding="UTF-8"?>
> <configuration>
>    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
>      <encoder>
>        <pattern>
>          %d{ISO8601} %-5level [%thread] %logger{0}: %msg%n
>        </pattern>
>      </encoder>
>    </appender>
>    <appender name="ACCESS"
> class="ch.qos.logback.core.rolling.RollingFileAppender">
>      <file>logs/access.log</file>
>      <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
>        <fileNamePattern>logs/access.%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
>        <timeBasedFileNamingAndTriggeringPolicy
> class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
>          <maxFileSize>1GB</maxFileSize>
>        </timeBasedFileNamingAndTriggeringPolicy>
>        <maxHistory>45<!-- days --></maxHistory>
>      </rollingPolicy>
>      <encoder>
>        <pattern>%msg%n</pattern>
>      </encoder>
>    </appender>
>    <logger name="access.log" additivity="false">
>      <appender-ref ref="ACCESS"/>
>    </logger>
>    <root level="info">
>      <appender-ref ref="STDOUT"/>
>    </root>
> </configuration>
> When I start my app, before my main() starts, I see this on the STDOUT
> console logger:
> #logback.classic pattern: %d{ISO8601} %-5level [%thread] %logger{0}: %msg%n
> And this gets added to my logs/access.log:
> #logback.classic pattern: %msg%n
> Thanks in advance.

As from the release note, this message was introduced by default in 1.0.2.

Please try to add
to your <encoder> section (below the <pattern>) to avoid the message.



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