How to create the custom marker in log4j2/slf4j?

[Bilguun Ariunbold]

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<https://stackoverflow.com/questions/36018016/how-to-create-the-custom-marker-in-slf4j-log4j2#>

I am trying to create custom marker using slf4j and log4j2. Below is how I
created the marker and used it:

Marker marker =
org.slf4j.MarkerFactory.getMarker("WebService");logger.info(marker,
"service called");

And below is my log4j2-test.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="DEBUG">
    <Properties>
        <Property name="layout">%d | %-5p | [%t] | %c{2} | %M | %m%n</Property>
    </Properties>
    <Appenders>
        <File name="WebServices"
fileName="${sys:user.home}/logs/service_requests.log">
            <MarkerFilter marker="WebService" onMatch="ACCEPT"
onMismatch="DENY" />
            <JSONLayout>
            </JSONLayout>
        </File>
    </Appenders>
    <Loggers>
        <Root level="TRACE">
            <AppenderRef ref="WebServices" level="INFO" />
        </Root>
    </Loggers>
</Configuration>

It created the file but does not write anything to it. Did I miss
something? thank you