spring cloud : spring cloud gateway - custom filter, global filter

springcloud/second-service/src/main/java/com/example/secondservice/SecondServiceController.java

@@ -21,4 +21,9 @@ public class SecondServiceController {
         log.info(header);
         return "Hello World in Second Service.";
     }
+
+    @GetMapping("/check")
+    public String check() {
+        return "Hi, there. This is a message from Second Service.";
+    }
 }