#61 Feat : 카테고리 엔티티 추가

src/main/java/friend/spring/domain/Category.java

@@ -0,0 +1,27 @@
+package friend.spring.domain;
+
+import friend.spring.domain.common.BaseEntity;
+import lombok.*;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@Builder
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+public class Category extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, length = 10)
+    private String name;
+
+    @Builder.Default
+    @OneToMany(mappedBy = "category")
+    private List<Post> postList = new ArrayList<>();
+}

src/main/java/friend/spring/domain/Post.java

@@ -57,6 +57,9 @@ public class Post extends BaseEntity {
     @JoinColumn(name = "user_id")
     private User user;
 
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "category_id")
+    private Category postCategory;
     // 부모 글 정의
     // 고민후기 원글 아이디
     @ManyToOne(fetch = FetchType.LAZY)