SpringBoot中全局日期格式化的三种核心方案

public class OrderDTO {
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",
        timezone = "GMT+8")
    private LocalDateTime createTime;

    @JsonFormat(pattern = "yyyy-MM-dd")
    private LocalDate birthDay;
}

@Configuration
public class DateConfig implements WebMvcConfigurer {
    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new Converter<String, LocalDate>() {
            @Override
            public LocalDateconvert(String source) {
                return LocalDate.parse(source,
                    DateTimeFormatter.ofPattern("yyyy-MM-dd"));
            }
        });
        registry.addConverter(new Converter<String, LocalDateTime>() {
            @Override
            public LocalDateTimeconvert(String source) {
                return LocalDateTime.parse(source,
                    DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
            }
        });
    }
}

@Configuration
public class JacksonConfig {
    @Bean
    public Jackson2ObjectMapperBuilderCustomizercustomizer() {
        return builder -> {
            DateTimeFormatter dateFormatter =
                DateTimeFormatter.ofPattern("yyyy-MM-dd");
            DateTimeFormatter dateTimeFormatter =
                DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");

            // LocalDate序列化/反序列化
            builder.serializers(
                new LocalDateSerializer(dateFormatter));
            builder.deserializers(
                new LocalDateDeserializer(dateFormatter));

            // LocalDateTime序列化/反序列化
            builder.serializers(
                new LocalDateTimeSerializer(dateTimeFormatter));
            builder.deserializers(
                new LocalDateTimeDeserializer(dateTimeFormatter));
        };
    }
}

# application.yml
spring:
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: GMT+8
    serialization:
      write-dates-as-timestamps: false