Configure Log4J2 for Spring Boot

Spring-Boot/spring-boot-log4j2-demo/src/main/java/com/javadevjournal/Log4J2Controller.java

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+package com.javadevjournal;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class Log4J2Controller {
+
+    private static final Logger LOG = LogManager.getLogger(Log4J2Controller.class);
+
+    @GetMapping(value = "/greeting")
+    public String greeting() {
+
+        LOG.debug("Debugging log in our greeting method");
+        LOG.info("Info log in our greeting method");
+        LOG.warn("Warning log in our greeting method");
+        LOG.error("Error in our greeting method");
+        return "Hello!!!";
+    }
+}

Spring-Boot/spring-boot-log4j2-demo/src/main/java/com/javadevjournal/SpringBootLog4J2ExampleApplication.java

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+package com.javadevjournal;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringBootLog4J2ExampleApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootLog4J2ExampleApplication.class, args);
+    }
+
+}
+

Spring-Boot/spring-boot-log4j2-demo/src/main/resources/log4j2.properties

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+# This is another way to configure Log4J2 for your Spring Boot application. #
+#status = error
+#name = Log4j2Sample
+
+#appenders = console
+
+#appender.console.type = Console
+#appender.console.name = STDOUT
+#appender.console.layout.type = PatternLayout
+#appender.console.layout.pattern = %d{yyyy-MM-dd HH:mm:ss} - %msg%n
+
+#rootLogger.level = warn
+#rootLogger.appenderRefs = stdout
+#rootLogger.appenderRef.stdout.ref = STDOUT

Spring-Boot/spring-boot-log4j2-demo/src/main/resources/log4j2.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="WARN" monitorInterval="30">
+    <Properties>
+        <Property name="PID">????</Property>
+        <Property name="LOG_PATTERN">%clr{%d{yyyy-MM-dd HH:mm:ss.SSS}}{faint} %clr{%5p} %clr{${sys:PID}}{magenta} %clr{---}{faint} %clr{[%15.15t]}{faint} %clr{%-40.40c{1.}}{cyan} %clr{:}{faint} %m%n%xwEx</Property>
+    </Properties>
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT" follow="true">
+            <PatternLayout pattern="${LOG_PATTERN}"/>
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Logger name="com.javadevjournal" level="debug"  additivity="false">
+            <AppenderRef ref="Console" />
+        </Logger>
+       <Root level="info">
+            <AppenderRef ref="Console"/>
+        </Root>
+    </Loggers>
+</Configuration>

Spring-Boot/spring-boot-log4j2-demo/src/test/java/com/javadevjournal/SpringBootLog4J2ExampleApplicationTests.java

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+package com.javadevjournal;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class SpringBootLog4J2ExampleApplicationTests {
+
+    @Test
+    public void contextLoads() {
+    }
+
+}
+