[E-2-5] JPA Auditing 으로 생성시간 및 수정시간 자동화하기

단순한 시간을 등록 / 수정하는 코드가 여기저기 들어가면 귀찮고, 코드가 지저분해지기때문에 JPA Auditing로 해결한다.

 

자바8 이상에서는 기본날짜타입인 Date 문제점을 해결하고 LocalDate / LocalDateTime이 등장했다.

 

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src/main/java

com.minokuma.book.springboot

domain

BaseTimeEntity.java

 

package com.minokuma.book.springboot.domain;

import lombok.Getter;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

import javax.persistence.EntityListeners;
import javax.persistence.MappedSuperclass;
import java.time.LocalDateTime;

@Getter
@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
public class BaseTimeEntity {

    @CreatedDate
    private LocalDateTime createdDate;

    @LastModifiedDate
    private LocalDateTime modifiedDate;
}

 

BaseTimeEntity클래스는 모든 엔티티의 상위 클래스가 되서

엔티티들의 createdDate, modifiedDate를 자동으로 관리한다.

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JPA Auditing 어노테이션 활성화 : BaseTimeEntity

 

Application.java

package com.minokuma.book.springboot;

        import org.springframework.boot.SpringApplication;
        import org.springframework.boot.autoconfigure.SpringBootApplication;
        import org.springframework.data.jpa.repository.config.EnableJpaAuditing;

@EnableJpaAuditing // JPA Auditing 활성화
@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

 

 

 

src/main/java

com.minokuma.book.springboot

domain/posts

Posts.java

 

package com.minokuma.book.springboot.domain.posts;

import com.minokuma.book.springboot.domain.BaseTimeEntity;
import lombok.Builder;
import lombok.Getter;
import lombok.NoArgsConstructor;

import javax.persistence.*;

@Getter
@NoArgsConstructor
@Entity
public class Posts extends BaseTimeEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(length = 500, nullable = false)
    private String title;

    @Column(columnDefinition = "TEXT", nullable = false)
    private String content;

    private String author;

    @Builder
    public Posts(String title, String content, String author){
        this.title = title;
        this.content = content;
        this.author = author;
    }

    public void update(String title, String content){
        this.title = title;
        this.content = content;
    }
}

 

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JPA Auditing 테스트 코드

 

src/test/java

com.minokuma.book.springbook

domain.posts

PostsRepositoryTest.java

 

package com.minokuma.book.springboot.domain.posts;

import org.junit.After;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.time.LocalDateTime;
import java.util.List;

import static org.assertj.core.api.Assertions.assertThat;

@RunWith(SpringRunner.class)
@SpringBootTest
public class PostsRepositoryTest {

    @Autowired
    PostsRepository postsRepository;

    @After
    public void cleanup(){
        postsRepository.deleteAll();
    }

    @Test
    public void retrieveBoardSave(){
        String title = "테스트 게시글";
        String content = "테스트 본문";

        postsRepository.save(Posts.builder()
                .title(title)
                .content(content)
                .author("minokuma@gmail.com").build());

        List<Posts> postsList = postsRepository.findAll();

        Posts posts = postsList.get(0);
        assertThat(posts.getTitle()).isEqualTo(title);
        assertThat(posts.getContent()).isEqualTo(content);

    }

    @Test
    public void registBaseTimeEntity(){

        LocalDateTime now = LocalDateTime.of(2019,6,4,0,0,0);
        postsRepository.save(Posts.builder()
                        .title("title")
                        .content("content")
                        .author("author")
                        .build());

        List<Posts> postsList = postsRepository.findAll();

        Posts posts = postsList.get(0);

        System.out.println(">>>>>> createDate=" + posts.getCreatedDate() + ", modifiedDate=" + posts.getModifiedDate());
        assertThat(posts.getCreatedDate()).isAfter(now);
        assertThat(posts.getModifiedDate()).isAfter(now);
    }
}

 

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테스트 코드 실행결과

 

 

이후에 추가될 엔티티들은 BaseTimeEntity만 상속받으면 자동으로 해결된다.