feat: TimeZone 설정, BaseTimeEntity 구현

src/main/java/site/sopkathon/product/common/config/TimeZoneConfig.java

@@ -0,0 +1,15 @@
+package site.sopkathon.product.common.config;
+
+import jakarta.annotation.PostConstruct;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.TimeZone;
+
+@Configuration
+public class TimeZoneConfig {
+    @PostConstruct
+    public void init() {
+        TimeZone.setDefault(TimeZone.getTimeZone("Asia/Seoul"));
+    }
+}
+

src/main/java/site/sopkathon/product/common/entity/BaseTimeEntity.java

@@ -0,0 +1,24 @@
+package site.sopkathon.product.common.entity;
+
+
+import jakarta.persistence.EntityListeners;
+import jakarta.persistence.MappedSuperclass;
+import lombok.Getter;
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.annotation.LastModifiedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+import java.time.LocalDateTime;
+
+@MappedSuperclass
+@EntityListeners(AuditingEntityListener.class)
+@Getter
+public abstract class BaseTimeEntity {
+
+    @CreatedDate
+    public LocalDateTime createdAt;
+
+    @LastModifiedDate
+    public LocalDateTime updatedAt;
+}
+