Log4j2 via SLF: Config file and pom

build.sbt

// Dependencies for logging
libraryDependencies +=  "org.apache.logging.log4j" % "log4j-api" % "2.0"

libraryDependencies +=  "org.apache.logging.log4j" % "log4j-core" % "2.0"

libraryDependencies +=  "org.apache.logging.log4j" % "log4j-1.2-api" % "2.0"

libraryDependencies +=  "org.slf4j" % "slf4j-log4j12" % "1.7.7"

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
 <!-- Logging for testing -->
<Configuration>
  <Appenders>
    <Console name="STDOUT" target="SYSTEM_OUT">
      <PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/>
    </Console>
  </Appenders>
  <Loggers>
    <Logger name="org.apache.log4j.xml" level="debug"/>
    <Root level="debug">
      <AppenderRef ref="STDOUT"/>
    </Root>
  </Loggers>
</Configuration>

pom.xml

 <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.0-rc1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.0-rc1</version>
        </dependency>
        <!-- bridge between log4j version 1 to log4j2-->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-1.2-api</artifactId>
            <version>2.0-rc1</version>
        </dependency>
        <!-- bridge between log4j and slf4j -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.7</version>
        </dependency>