Spring时间处理

入参处理

入参在POST请求时，Spring会默认序列化字符串时间到LocalDateTime系列。
入参在GET请求时，Spring默认不处理，需要在参数上写@DateTimeFormat注解。
可以通过统一处理

/***
     * Date日期类型转换器
     */
    @Bean
    public Formatter<Date> dateFormatter() {
        return new Formatter<Date>() {

            @Override
            public Date parse(String text, Locale locale) {
                SimpleDateFormat sdf = new SimpleDateFormat(Dateutils.DATE_FORMAT_FULL);
                Date date = null;
                try {
                    date = sdf.parse(text);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                return date;
            }

            @Override
            public String print(Date object, Locale locale) {
                SimpleDateFormat sdf = new SimpleDateFormat(Dateutils.DATE_FORMAT_FULL);
                return sdf.format(object);
            }
        };
    }
    @Bean
    public Formatter<LocalDate> localDateFormatter() {
        return new Formatter<LocalDate>() {
            @Override
            public LocalDate parse(String text, Locale locale) {
                return LocalDate.parse(text, DateTimeFormatter.ISO_LOCAL_DATE);
            }

            @Override
            public String print(LocalDate object, Locale locale) {
                return DateTimeFormatter.ISO_LOCAL_DATE.format(object);
            }
        };
    }

    @Bean
    public Formatter<LocalDateTime> localDateTimeFormatter() {
        return new Formatter<LocalDateTime>() {
            @Override
            public String print(LocalDateTime localDateTime, Locale locale) {
                return DateTimeFormatter.ofPattern(Dateutils.DATE_FORMAT_FULL).format(localDateTime);
            }

            @Override
            public LocalDateTime parse(String text, Locale locale) {
                return LocalDateTime.parse(text, DateTimeFormatter.ofPattern(Dateutils.DATE_FORMAT_FULL));
            }
        };
    }

    @Bean
    public Formatter<LocalTime> localTimeFormatter() {
        return new Formatter<LocalTime>() {
            @Override
            public String print(LocalTime localTime, Locale locale) {
                return DateTimeFormatter.ofPattern(Dateutils.DATE_FORMAT_HMS).format(localTime);
            }

            @Override
            public LocalTime parse(String text, Locale locale) {
                return LocalTime.parse(text, DateTimeFormatter.ofPattern(Dateutils.DATE_FORMAT_HMS));
            }
        };
    }

出参处理

出参LocalDateTime时间需要写@JsonFormat(pattern = Dateutils.DATE_FORMAT_FULL)处理，可以通过增加统一配置处理

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer customizer() {
        return builder -> {
            builder.locale(Locale.CHINA);
            builder.timeZone(TimeZone.getTimeZone(ZoneId.systemDefault()));
            builder.simpleDateFormat("yyyy-MM-dd HH:mm:ss");

            JavaTimeModule javaTimeModule = new JavaTimeModule();
            javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
            javaTimeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
            javaTimeModule.addSerializer(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern("HH:mm:ss")));
            javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
            javaTimeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
            javaTimeModule.addDeserializer(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern("HH:mm:ss")));

            builder.modules(javaTimeModule);
        };
    }