Springboot 格式化LocalDateTime的方法

 		<!--而该模块JSR310支持到了时间类型的序列化、反序列化-->
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
        </dependency>

import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
@Configuration
public class LocalDateTimeSerializerConfig {
    @Value("${spring.jackson.date-format:yyyy-MM-dd HH:mm:ss}")
    private String pattern;
    public LocalDateTimeSerializer localDateTimeDeserializer() {
        return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(pattern));
    }
    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        // 默认LocalDateTime格式化的格式 yyyy-MM-dd HH:mm:ss
        return builder -> builder.serializerByType(LocalDateTime.class, localDateTimeDeserializer());
    }
}

@Data
@EqualsAndHashCode(callSuper = false)
@TableName(value = "sg_article")
public class Article implements Serializable {
    @TableId(value = "id", type = IdType.AUTO)
    private Long id;
    /**
     * 标题
     */
    @TableField(value = "title")
    private String title;
    /**
     * 文章内容
     */
    @TableField(value = "content")
    private String content;
    /**
     * 文章摘要
     */
    @TableField(value = "summary")
    private String summary;
    /**
     * 所属分类id
     */
    @TableField(value = "category_id")
    private Long categoryId;
    /**
     * 所属分类名称
     */
    @TableField(exist = false)
    private String categoryName;
    /**
     * 缩略图
     */
    @TableField(value = "thumbnail")
    private String thumbnail;
    /**
     * 是否置顶（0否，1是）
     */
    @TableField(value = "is_top")
    private String isTop;
    /**
     * 状态（0已发布，1草稿）
     */
    @TableField(value = "status")
    private String status;
    /**
     * 访问量
     */
    @TableField(value = "view_count")
    private Long viewCount;
    /**
     * 是否允许评论 1是，0否
     */
    @TableField(value = "is_comment")
    private String isComment;
    @TableField(value = "create_by")
    private Long createBy;
    @TableField(value = "create_time")
    private LocalDateTime createTime;
    @TableField(value = "update_by")
    private Long updateBy;
    @TableField(value = "update_time")
    private LocalDateTime updateTime;
    /**
     * 删除标志（0代表未删除，1代表已删除）
     */
    @TableField(value = "del_flag")
    private Integer delFlag;
}

 	@TableField(value = "create_time")
    @JsonFormat(pattern = "yyyy-MM-dd")
    private LocalDateTime createTime;