springboot 全局时间格式化

方法一:配置

这种方式只对 Date 类型生效

spring:
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8

方法二:@JsonFormat

部分格式化:@JsonFormat 注解需要用在实体类的时间字段上，对应的字段才能进行格式化。

@Getter
@Setter
public class TestTime {

    @JsonFormat(locale = "zh", timezone = "GMT+8", pattern = "yyyy-MM-dd HH:mm:ss")
    private Date date;

    private LocalDateTime localDateTime;

    @JsonFormat(locale = "zh", timezone = "GMT+8", pattern = "yyyyMMdd")
    private LocalDate localDate;

    @JsonFormat(locale = "zh", timezone = "GMT+8", pattern = "HHmmss")
    private LocalTime localTime;

}

方法三:@JsonComponent

使用 @JsonComponent 注解自定义一个全局格式化类，分别对 Date 和 LocalDate 类型做格式化处理。

@JsonComponent
public class JsonComponentConfig {

    @Value("${spring.jackson.date-format:yyyy-MM-dd HH:mm:ss}")
    private String pattern;

    /**
     * date 类型全局时间格式化
     */
    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilder() {
        return builder -> {
            TimeZone tz = TimeZone.getTimeZone("UTC");
            DateFormat df = new SimpleDateFormat(pattern);
            df.setTimeZone(tz);
            builder.failOnEmptyBeans(false)
                    .failOnUnknownProperties(false)
                    .featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
                    .dateFormat(df);
        };
    }

    /**
     * LocalDate 类型全局时间格式化
     */
    public LocalDateTimeSerializer localDateTimeDeserializer() {
        return new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(pattern));
    }

    @Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return builder -> builder.serializerByType(LocalDateTime.class, localDateTimeDeserializer());
    }

}