需要log4j致命级别日志记录

Question

This is my log4j.xml. i want only FATAL log from package com.xyz.rest should print to /LOGS/Acb/d.log file.

But i can see Debug level logs as well in file. Why log4j is printing Debug level logs from com.xyz.rest package.

<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" debug="false">

<appender name="Def" class="org.apache.log4j.RollingFileAppender">
        <param name="File" value="/LOGS/Acb/d.log"/>
        <param name="MaxFileSize" value="10000KB"/>
        <param name="MaxBackupIndex" value="10"/>

        <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="%d [%t] %-5p [%c{1}] %m%n"/>
        </layout>
</appender>
<logger name="com.xyz.rest">
        <logger value="fatal"/>
        <appender-ref ref="Def"/>
</logger>

</log4j:configuration>

Answer 1

Its because with the following code you are adding another log level to your com.xyz.rest package which is not removing the debug level which your package inherits from parents:

<logger name="com.xyz.rest">
        <logger value="fatal"/>
        <appender-ref ref="Def"/>
</logger>

What you need is to set the additivity to false so that rather than adding another log level, you will set the log level:

<logger name="com.xyz.rest" additivity="false">
        <logger value="fatal"/>
        <appender-ref ref="Def"/>
</logger>

More information can be found here .

Not sure but it might also be necessary to enclose the <logger></logger> tags in <loggers></loggers> tag