Spring Data审计功能@CreatedDate、@CreatedBy、@LastModifiedDate、@LastModifiedBy的使用

在Spring JPA中，在实体bean的属性上加注解@CreatedDate、@CreatedBy、@LastModifiedDate、@LastModifiedBy，可以再实体插入数据库时进行设置值，这样以来，在对普通实体类的添加、修改操作时，就不用关心创建时间、更新时间这些信息了。本文以SpringBoot为例

1、引入依赖

<dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-data-jpa</artifactId></dependency>

2、实体bean

@MappedSuperclass@Audited@EntityListeners(AuditingEntityListener.class)public abstract class AbstractEntity implements Serializable {    private static final long serialVersionUID = 1L;    @CreatedBy    @Column(name = "created_by", nullable = false, length = 32, updatable = false)    @JsonIgnore    private String createdBy;    @CreatedDate    @Column(name = "created_date", nullable = false)    @JsonIgnore    private ZonedDateTime createdDate = ZonedDateTime.now();    @LastModifiedBy    @Column(name = "modified_by", nullable = false, length = 32)    @JsonIgnore    private String modifiedBy;    @LastModifiedDate    @Column(name = "modified_date")    @JsonIgnore    private ZonedDateTime modifiedDate = ZonedDateTime.now();}// 省略对应的 set/get 方法......

3、实现AuditorAware接口

@Componentpublic class SpringSecurityAuditorAware implements AuditorAware<String> {    @Override    public String getCurrentAuditor() {        //返回会话中或者指定的用户名    }}

4、启用JPA Audit注解

@Configuration@EntityScan@EnableJpaRepositories@EnableJpaAuditing(auditorAwareRef = "springSecurityAuditorAware")@EnableTransactionManagementpublic class DatabaseConfiguration {    private final Logger log = LoggerFactory.getLogger(DatabaseConfiguration.class);    @Inject    private Environment env;    @Bean    public Hibernate5Module hibernate5Module() {        return new Hibernate5Module();    }}