BAEL-20875: Move spring-boot-logging-log4j2 into spring-boot-modules

spring-boot-modules/spring-boot-logging-log4j2/src/main/java/com/baeldung/graylog/GraylogDemoApplication.java

@@ -0,0 +1,17 @@
+package com.baeldung.graylog;
+
+import org.apache.log4j.Logger;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GraylogDemoApplication {
+
+    private final static Logger LOG =
+            Logger.getLogger(GraylogDemoApplication.class);
+
+    public static void main(String[] args) {
+        SpringApplication.run(GraylogDemoApplication.class, args);
+        LOG.info("Hello from Spring Boot");
+    }
+}

spring-boot-modules/spring-boot-logging-log4j2/src/main/java/com/baeldung/springbootlogging/LoggingController.java

@@ -0,0 +1,37 @@
+package com.baeldung.springbootlogging;
+
+import org.apache.logging.log4j.LogManager;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class LoggingController {
+
+    private final static Logger logger = LoggerFactory.getLogger(LoggingController.class);
+
+    @GetMapping("/")
+    public String index() {
+        logger.trace("A TRACE Message");
+        logger.debug("A DEBUG Message");
+        logger.info("An INFO Message");
+        logger.warn("A WARN Message");
+        logger.error("An ERROR Message");
+
+        return "Howdy! Check out the Logs to see the output...";
+    }
+
+    private static final org.apache.logging.log4j.Logger loggerNative = LogManager.getLogger(LoggingController.class);
+
+    @GetMapping("/native")
+    public String nativeLogging() {
+        loggerNative.trace("This TRACE message has been printed by Log4j2 without passing through SLF4J");
+        loggerNative.debug("This DEBUG message has been printed by Log4j2 without passing through SLF4J");
+        loggerNative.info("This INFO message has been printed by Log4j2 without passing through SLF4J");
+        loggerNative.warn("This WARN message been printed by Log4j2 without passing through SLF4J");
+        loggerNative.error("This ERROR message been printed by Log4j2 without passing through SLF4J");
+        loggerNative.fatal("This FATAL message been printed by Log4j2 without passing through SLF4J");
+        return "Howdy! Check out the Logs to see the output printed directly through Log4j2...";
+    }
+}

spring-boot-modules/spring-boot-logging-log4j2/src/main/java/com/baeldung/springbootlogging/LombokLoggingController.java

@@ -0,0 +1,28 @@
+package com.baeldung.springbootlogging;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import lombok.extern.slf4j.Slf4j;
+
+//import lombok.extern.log4j.Log4j2;
+//import lombok.extern.apachecommons.CommonsLog;
+
+@RestController("LombokLoggingController")
+@Slf4j
+// @CommonsLog (Comment any other Lombok logging annotation and uncomment this
+// to work with Apache Commons Logging)
+// @Log4j2 (Comment any other Lombok logging annotation and uncomment this to
+// work directly with Log4j2)
+public class LombokLoggingController {
+
+	@GetMapping("/lombok")
+	public String index() {
+		log.trace("A TRACE Message");
+		log.debug("A DEBUG Message");
+		log.info("An INFO Message");
+		log.warn("A WARN Message");
+		log.error("An ERROR Message");
+		return "Howdy! Check out the Logs to see the output...";
+	}
+}

spring-boot-modules/spring-boot-logging-log4j2/src/main/java/com/baeldung/springbootlogging/SpringBootLoggingApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung.springbootlogging;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringBootLoggingApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootLoggingApplication.class, args);
+    }
+}