对LocalDateTime进行格式化方式

1、添加maven坐标

<dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

2、日期格式化配置类

@Configuration
public class LocalDateTimeSerializerConfig {

    @Value(value = "${spring.jackson.date-format:yyyy-MM-dd HH:mm:ss}")
    private String pattern;

    public LocalDateTimeSerializer localDateTimeSerializer(){
        return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(pattern));
    }

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer(){
        return builder -> builder.serializerByType(LocalDateTime.class,localDateTimeSerializer());
    }
}

3、样例实体类

@Data
@EqualsAndHashCode(callSuper = false)
@ApiModel(value="UserInfo对象", description="用户基本信息")
public class UserInfo implements Serializable {

    private static final long serialVersionUID = 1L;

    @ApiModelProperty(value = "编号")
    @TableId(value = "id", type = IdType.AUTO)
    private Long id;

    @ApiModelProperty(value = "手机号")
    private String mobile;

    @ApiModelProperty(value = "创建时间")
    private LocalDateTime createTime;

    @ApiModelProperty(value = "更新时间")
    private LocalDateTime updateTime;
}

这样操作该实体类对LocalDateTime类型就会格式化了。