How to avoid duplication of log message when I want to change log format? - spring-boot

Question

I want to change log format which will be written to console.
I'm using spring boot, so I'm including base.xml in logback.xml.
<include resource="org/springframework/boot/logging/logback/base.xml"/>
But I realised that if I use the code above and use appender="CONSOLE" to specify log format, my log message will be duplicate.
I know that if I comment the line above out, I can stop duplication, but I must specify all the settings which has been settle in the base.xml in that case.
Could someone give me advice how should I specify log format as I use base.xml?
Here is my logbook.xml:
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="false">
<include resource="org/springframework/boot/logging/logback/base.xml"/>
<logger name="jdbc" level="OFF" />
<logger name="jdbc.sqltiming" level="WARN" />
<logger name="jdbc.sqlonly" level="INFO" />
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%date{yyyy-MM-dd HH:mm:ss} [%thread] %level %logger{0} -
%msg \(%file:%line\)%n</pattern>
</encoder>
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>INFO</level>
</filter>
</appender>
<appender name="FILE"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>c:/tmp/app.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>logs/app.%d{yyyy-MM-dd}.log.tar.gz</fileNamePattern>
<maxHistory>7</maxHistory>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd'T'HH:mm:ss'Z'} - %m%n</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="FILE" />
<appender-ref ref="CONSOLE" />
</root>
<logger name="FILE" additivity="false">
<level value="INFO" />
<appender-ref ref="FILE" />
</logger>
</configuration>

Answer 1

As of now You cant do that as a configuration. Please check the link. The feature has been requested but not yet implemented.