Show logs only from one class using logback - logback

Question

I am trying to display logs into console as well as file however in file i want only certain logs that will be displayed from one particular class and i am not sure how to do this. Below is my logback.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration>
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>{ "date_time":"%date", "thread":"[%thread]", "log_level":"%-5level", "class_name":"%logger{0}", "log_message":"%msg" }%n</pattern>
</encoder>
</appender>
<appender name="FILE" class="ch.qos.logback.core.FileAppender">
<file> test.txt </file>
<append>false</append>
<encoder>
<pattern>{ "date_time":"%date", "thread":"[%thread]", "log_level":"%-5level", "class_name":"%logger{0}", "log_message":"%msg" }%n</pattern>
</encoder>
</appender>
<root level="info">
<appender-ref ref="FILE" />
<appender-ref ref="STDOUT" />
</root>
</configuration>

Answer 1

Just declare a logger for your "one particular class" and then associate that logger with your FILE appender.
For example:
<appender name="FILE" class="ch.qos.logback.core.FileAppender">
<file>test.log</file>
<encoder>
<pattern>{ "date_time":"%date", "thread":"[%thread]", "log_level":"%-5level", "class_name":"%logger{0}", "log_message":"%msg" }%n</pattern>
</encoder>
</appender>
<logger name="your.particular.Class">
<appender-ref ref="FILE" />
</logger>
<root level="info">
<appender-ref ref="STDOUT" />
</root>
This will ensure that any log events emitted by your.particular.Class are only directed to the FILE appender and all other logs will be directed only to the STDOUT appender.