JSON format with Log4j2

app.java

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class App {


    public static void main(String[] args) {

        Logger logger = LogManager.getLogger(App.class);
        logger.trace("Index :: Logging Message !");
        String foo = "";
        try {
            foo.charAt(18);
        } catch (Exception e) {
            logger.error(e);
        }
    }
}

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <JSONLayout compact="true" eventEol="true" properties="true"/>
        </Console>
    </Appenders>
    <Loggers>
        <Root level="TRACE">
            <AppenderRef ref="Console" />
        </Root>
    </Loggers>
</Configuration>

output.txt

{"timeMillis":1477301898899,"thread":"main","level":"TRACE","loggerName":"App","message":"Index :: Logging Message !","endOfBatch":false,"loggerFqcn":"org.apache.logging.log4j.spi.AbstractLogger","contextMap":{},"threadId":1,"threadPriority":5}
{"timeMillis":1477301898965,"thread":"main","level":"ERROR","loggerName":"App","message":"","thrown":{"commonElementCount":0,"localizedMessage":"String index out of range: 18","message":"String index out of range: 18","name":"java.lang.StringIndexOutOfBoundsException","extendedStackTrace":[{"class":"java.lang.String","method":"charAt","file":"String.java","line":658,"exact":false,"location":"?","version":"1.8.0_92"},{"class":"App","method":"main","file":"App.java","line":16,"exact":true,"location":"classes/","version":"?"},{"class":"sun.reflect.NativeMethodAccessorImpl","method":"invoke0","file":"NativeMethodAccessorImpl.java","line":-2,"exact":false,"location":"?","version":"1.8.0_92"},{"class":"sun.reflect.NativeMethodAccessorImpl","method":"invoke","file":"NativeMethodAccessorImpl.java","line":62,"exact":false,"location":"?","version":"1.8.0_92"},{"class":"sun.reflect.DelegatingMethodAccessorImpl","method":"invoke","file":"DelegatingMethodAccessorImpl.java","line":43,"exact":false,"location":"?","version":"1.8.0_92"},{"class":"java.lang.reflect.Method","method":"invoke","file":"Method.java","line":498,"exact":false,"location":"?","version":"1.8.0_92"},{"class":"com.intellij.rt.execution.application.AppMain","method":"main","file":"AppMain.java","line":144,"exact":true,"location":"idea_rt.jar","version":"?"}]},"endOfBatch":false,"loggerFqcn":"org.apache.logging.log4j.spi.AbstractLogger","contextMap":{},"threadId":1,"threadPriority":5}

Process finished with exit code 0

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>datadog</groupId>
    <artifactId>support</artifactId>
    <version>1.0-SNAPSHOT</version>


    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.apache.logging.log4j/log4j-core -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.7</version>
        </dependency>


        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.8.3</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.3</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.8.3</version>
        </dependency>

    </dependencies>


</project>