订制默认的 jackson mapper, 自定义 java 8 time api 中对象的序列化格式

CustomJacksonDateFormat.java

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer(JacksonProperties jacksonProperties) {
        return jacksonObjectMapperBuilder -> {
            String dateFormatStr = jacksonProperties.getDateFormat();
            DateTimeFormatter formatter =
                    FanStringUtil.isNotBlank(dateFormatStr) ? DateTimeFormatter.ofPattern(dateFormatStr) : null;
            jacksonObjectMapperBuilder.modules(
                    new JavaTimeModule()
                            .addSerializer(LocalDate.class, new LocalDateSerializer(formatter))
                            .addSerializer(LocalTime.class, new LocalTimeSerializer(formatter))
                            .addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(formatter))
                            .addDeserializer(LocalDate.class, new LocalDateDeserializer(formatter))
                            .addDeserializer(LocalTime.class, new LocalTimeDeserializer(formatter))
                            .addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(formatter))
            );
        };
    }