Disable debugging messages or logs in log4j.xml

Question

I want to disable a debug message or a log message in log4j.xml.

My log4j.xml:

<appender name="consoleAppender" class="org.apache.log4j.ConsoleAppender">
        <param name="Threshold" value="debug" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{dd MMM yyyy HH:mm:ss} %5p %c{1} - %m%n" />
        </layout>
    </appender>

    <appender name="fileAppender" class="org.apache.log4j.RollingFileAppender">
        <param name="append" value="false" />
        <param name="file" value="./logs/learning.log" />
        <param name="Threshold" value="debug" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%d{dd MMM yyyy HH:mm:ss} %5p %c{1} - %m%n" />
        </layout>
    </appender>
    <root>
        <level value="DEBUG" />
        <appender-ref ref="consoleAppender" />
        <appender-ref ref="fileAppender" />
    </root>

My Java code is:

 public static void main(String[] args) {
        log.info("info");
        log.debug("dddffff");
    }

If I run this program, INFO messages will still be logged, below will be a log file

07 Aug 2014 12:54:49  INFO MainClass - info
07 Aug 2014 12:54:49 DEBUG MainClass - dddffff

Now I want to disable INFO messages.

Answer 1

set the logging level to = OFF instead of DEBUG

Answer 2

You can disable the log for a class or package. eg:.

<!-- console -->
<appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
    <param name="threshold" value="TRACE" />
    <layout class="org.apache.log4j.PatternLayout">
        <param name="conversionPattern" 
               value="%d{dd MMM yyyy HH:mm:ss} %5p %c{1} - %m%n" />
    </layout>
</appender>

<!-- categories -->
<category name="org.apache.commons">
    <priority value="OFF" />
</category>
<category name="org.apache.catalina.loader.WebappClassLoader">
    <priority value="OFF" />
</category>

<!-- root -->
<root>
    <priority value="TRACE" />
    <appender-ref ref="STDOUT" />
</root>

Learn more in Apache log4j 1.2 - A brief introduction to log4j .

Answer 3

log4j

<logger name="packageName.Class" additivity="false">
    <level value="INFO" />
    <appender-ref ref="fileAppender" />
</logger>

, getLogger . , appender, , .

Answer 4

info, , , OFF appender,

<appender name="fileAppender" class="org.apache.log4j.RollingFileAppender">
    <param name="append" value="false" />
    <param name="file" value="./logs/learning.log" />
    <param name="Threshold" value="INFO" />
    <layout class="org.apache.log4j.PatternLayout">
        <param name="ConversionPattern" value="%d{dd MMM yyyy HH:mm:ss} %5p %c{1} - %m%n" />
    </layout>
</appender>

info debug. , OFF.

xml log4j.