add

src/main/java/com/ahbonus/demo4bonus/GreetingController.java

@@ -1,4 +1,6 @@
 package com.ahbonus.demo4bonus;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestParam;
@@ -9,17 +11,19 @@ import org.springframework.web.bind.annotation.RestController;
  */
 @RestController
 public class GreetingController {
-
+    Logger logger= LoggerFactory.getLogger(GreetingController.class);
     private static final String TEMPLATE = "Hello my dear, %s!";
     @PostMapping("/greeting")
 
     public String greeting(@RequestParam(value = "name", defaultValue = "World") String name) {
+        logger.info("Welcome from Anhui Bonus!");
         return String.format(TEMPLATE, name);
 
     }
 
     @GetMapping("/health")
     public String healthcheck() {
+        logger.info("Server status is OK");
         return "OKOKOK";
 
     }