feat: 예외 메시지 상수를 enum으로 관리하도록 개선

- 예외 메시지를 ExceptionMessage enum으로 분리하여 중앙 관리
- 상수로 관리하여 메시지의 일관성 유지 및 중복 제거
- 향후 메시지 변경 시 한 곳에서 관리 가능하도록 개선

Author: 7zrv

src/main/java/com/somemore/center/domain/Center.java

@@ -0,0 +1,66 @@
+package com.somemore.center.domain;
+
+import com.somemore.global.common.BaseEntity;
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.util.UUID;
+
+
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@Getter
+@Entity
+public class Center extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.UUID)
+    @Column(nullable = false, length = 16)
+    private UUID id;
+
+    @Column(name = "name", nullable = false)
+    private String name;
+
+    @Column(name = "contact_number", nullable = false)
+    private String contactNumber;
+
+    @Column(name = "img_url", nullable = false)
+    private String imgUrl;
+
+    @Column(name = "introduce", columnDefinition = "TEXT", nullable = false)
+    private String introduce;
+
+    @Column(name = "homepage_link", nullable = false)
+    private String homepageLink;
+
+    @Column(name = "account_id", nullable = false)
+    private String accountId;
+
+    @Column(name = "account_pw", nullable = false)
+    private String accountPw;
+
+
+    @Builder
+    private Center(String name, String contactNumber, String imgUrl, String introduce, String homepageLink, String accountId, String accountPw) {
+
+        this.name = name;
+        this.contactNumber = contactNumber;
+        this.imgUrl = imgUrl;
+        this.introduce = introduce;
+        this.homepageLink = homepageLink;
+        this.accountId = accountId;
+        this.accountPw = accountPw;
+    }
+
+    public static Center create(String name, String contactNumber, String imgUrl, String introduce, String homepageLink, String accountId, String accountPw) {
+        return Center.builder()
+                .name(name)
+                .contactNumber(contactNumber)
+                .imgUrl(imgUrl)
+                .introduce(introduce)
+                .homepageLink(homepageLink)
+                .accountId(accountId)
+                .accountPw(accountPw)
+                .build();
+    }
+
+}

src/main/java/com/somemore/domains/Center.java

@@ -4,11 +4,7 @@
 
 public class BadRequestException extends RuntimeException{
 
-    public BadRequestException() {
-        super();
-    }
-
-    public BadRequestException(String message) {
+    public BadRequestException(final String message) {
         super(message);
     }
 }

src/main/java/com/somemore/global/exception/BadRequestException.java

@@ -0,0 +1,15 @@
+package com.somemore.global.exception;
+
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+@Getter
+public enum ExceptionMessage {
+
+    NOT_EXISTS_CENTER("존재하지 않는 기관 ID 입니다.")
+    ;
+
+    private final String message;
+}