feat: 타임존 세팅, 헬스 체크 API 구현

src/main/java/com/umc/naoman/NaomanApplication.java

@@ -1,15 +1,27 @@
 package com.umc.naoman;
 
+import jakarta.annotation.PostConstruct;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
+import java.time.ZonedDateTime;
+import java.util.TimeZone;
+
 @EnableJpaAuditing
 @SpringBootApplication
+@Slf4j
 public class NaomanApplication {
 
 	public static void main(String[] args) {
 		SpringApplication.run(NaomanApplication.class, args);
 	}
 
+	@PostConstruct
+	public void setTimeZone() {
+		log.debug("타임존 설정 전 현재 시각: {}", ZonedDateTime.now());
+		TimeZone.setDefault(TimeZone.getTimeZone("Asia/Seoul"));
+		log.debug("타임존 설정 후 현재 시각: {}", ZonedDateTime.now());
+	}
 }

src/main/java/com/umc/naoman/domain/member/controller/HealthCheckController.java

@@ -0,0 +1,19 @@
+package com.umc.naoman.domain.member.controller;
+
+import com.umc.naoman.global.result.ResultResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import static com.umc.naoman.global.result.code.GlobalResultCode.HEALTH_CHECK;
+
+@RestController
+@Tag(name = "헬스 체크 API", description = "서버의 상태 검사 API입니다.")
+public class HealthCheckController {
+    @GetMapping("/")
+    @Operation(summary = "헬스 체크 API", description = "서버가 정상적으로 동작하는지 검사하는 API입니다.")
+    public ResultResponse<Object> healthCheck() {
+        return ResultResponse.of(HEALTH_CHECK);
+    }
+}

src/main/java/com/umc/naoman/global/result/code/GlobalResultCode.java

@@ -0,0 +1,19 @@
+package com.umc.naoman.global.result.code;
+
+import com.umc.naoman.global.result.ResultCode;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@Getter
+@RequiredArgsConstructor
+public enum GlobalResultCode implements ResultCode {
+    HEALTH_CHECK(200, "HEALTH_CHECK", "서버가 정상적으로 동작합니다.")
+
+    ;
+
+    private final int status;
+    private final String code;
+    private final String message;
+}
+
+