解决Long类型在前端、后端传输精度丢失问题

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@Configuration public class JacksonConfiguration {       /**      * DateTime格式化字符串      */     private static final String DEFAULT_DATETIME_PATTERN = "yyyy-MM-dd HH:mm:ss";       /**      * Date格式化字符串      */     private static final String DEFAULT_DATE_PATTERN = "yyyy-MM-dd";       /**      * Time格式化字符串      */     private static final String DEFAULT_TIME_PATTERN = "HH:mm:ss";       private static final String DEFAULT_TIME_ZONE = "GMT+8";       /**      * Jackson序列化和反序列化转换器，用于转换Post请求体中的json以及将对象序列化为返回响应的json      */     @Bean     public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {         DateFormat dateTimeDf = DateUtil.newSimpleFormat(DEFAULT_DATETIME_PATTERN, Locale.CHINA, TimeZone.getTimeZone(DEFAULT_TIME_ZONE));         DateTimeFormatter dateTimeDtf = DateTimeFormatter.ofPattern(DEFAULT_DATETIME_PATTERN).withZone(ZoneId.of(DEFAULT_TIME_ZONE));         DateTimeFormatter dateDtf = DateTimeFormatter.ofPattern(DEFAULT_DATE_PATTERN).withZone(ZoneId.of(DEFAULT_TIME_ZONE));         DateTimeFormatter timeDtf = DateTimeFormatter.ofPattern(DEFAULT_TIME_PATTERN).withZone(ZoneId.of(DEFAULT_TIME_ZONE));         return builder -> builder                 .serializerByType(LocalDateTime.class, new LocalDateTimeSerializer(dateTimeDtf))                 .serializerByType(LocalDate.class, new LocalDateSerializer(dateDtf))                 .serializerByType(LocalTime.class, new LocalTimeSerializer(timeDtf))                 .serializerByType(Date.class, new DateSerializer(false, dateTimeDf))                 .deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer(dateTimeDtf))                 .deserializerByType(LocalDate.class, new LocalDateDeserializer(dateDtf))                 .deserializerByType(LocalTime.class, new LocalTimeDeserializer(timeDtf))                 .deserializerByType(Date.class, new DateDeserializers.DateDeserializer(DateDeserializers.DateDeserializer.instance, dateTimeDf, DEFAULT_DATETIME_PATTERN))                 .serializerByType(Long.TYPE, ToStringSerializer.instance)                 .serializerByType(Long.class, ToStringSerializer.instance);     } }