BAEL-1783 (#4545)

* BAEL-1783

* tabs to spaces, artifact id renamed

* tabs to spaces

* Added module spring-boot-logging-log4j2

* Removed <name> node

* @GetMapping instead of the older @RequestMapping

* @GetMapping instead of the older @RequestMapping

spring-boot-mvc/src/main/java/com/baeldung/springbootmvc/LoggingController.java

@@ -0,0 +1,23 @@
+package com.baeldung.springbootmvc;
+
+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 {
+
+    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...";
+    }
+}