错误信息：
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of java.time.LocalDateTime (no Creators, like default construct, exist):
解决：LocalDateTime属性加上注解

/**
 * 创建时间
 */
@JsonDeserialize(using = LocalDateTimeDeserializer.class)
@JsonSerialize(using = LocalDateTimeSerializer.class)
@TableField(fill = FieldFill.INSERT)
private LocalDateTime gmtCreate;

/**
 * 更新时间
 */
@JsonDeserialize(using = LocalDateTimeDeserializer.class)
@JsonSerialize(using = LocalDateTimeSerializer.class)
@TableField(fill = FieldFill.INSERT_UPDATE)
private LocalDateTime gmtModified;