[log]spring data jpa 实现动态的更新

sql 的动态更新插入

mybatis 中可以在sql语句中使用isNull来判断

jap中的实现方法

@Entity
@Data
@Table(name = "channel")
// 需要在实体类中加入
@EntityListeners(AuditingEntityListener.class)
public class Channel {
	 @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long channelId;
	 @CreationTimestamp
    private Timestamp createTime;
    @CreatedBy
    private String createUserId;
    @UpdateTimestamp
    private Timestamp modifyTime;
    @LastModifiedBy
    private String modifyUserId;
    }

@Configuration
@EnableJpaAuditing(auditorAwareRef = "auditorProvider")
public class JpaAuditingConfiguration {

    @Bean
    public AuditorAware<String> auditorProvider() {
    //获取当前用户 在create的时候使用
        return () -> Optional.ofNullable( SecurityContextHolder.getContext().getAuthentication().getName());
    }


}

    @PostMapping(value = "/create")
    protected ResponseEntity create(@RequestBody Channel resources) {

        if (!ObjectUtils.isEmpty(resources.getChannelId())) {
            Channel channel = phoneChannelService.getInfo(resources.getChannelId()).get();
            resources.setCreateTime(channel.getCreateTime());
            resources.setCreateUserId(channel.getCreateUserId());
            BeanUtils.copyProperties(resources, channel, ResultUtil.getNullPropertyNames(resources));
            resources = channel;
        }
        return ResultUtil.wrapper(phoneChannelService.save(resources), HttpStatus.OK);
    }

   /**
     * 获取属性为null的字段列表
     * @date: 2019-06-10 liu
    **/
    public static String[] getNullPropertyNames(Object source) {
        final BeanWrapper wrappedSource = new BeanWrapperImpl(source);
        return Stream.of(wrappedSource.getPropertyDescriptors())
                .map(FeatureDescriptor::getName)
                .filter(propertyName -> wrappedSource.getPropertyValue(propertyName) == null)
                .toArray(String[]::new);
    }
}