Spring全局JSON格式化时间(全局序列化日期时间)

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

> 相信这种方式大家都知道，就是在传输的Bean对象属性上加上 @JsonFormat 注解

@Data
public class TestBO {

    @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;

}

直接上代码，可自己定义任何的类型，当然也可以使用网上说的那个@JsonComponent注解代替@Configuration

@Configuration
public class JacksonDateformatConfig {
    
    private static final String DATE_FORMAT = "yyyy-MM-dd";
    
    private static final String DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss";
    
    private static final String TIME_FORMAT = "HH:mm:ss";

    
    @Bean
    @Primary
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return builder -> builder.serializerByType(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern(DATETIME_FORMAT)))
            .serializerByType(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern(DATE_FORMAT)))
            .serializerByType(LocalTime.class, new LocalTimeSerializer(DateTimeFormatter.ofPattern(TIME_FORMAT)))
            .deserializerByType(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern(DATETIME_FORMAT)))
            .deserializerByType(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern(DATE_FORMAT)))
            .deserializerByType(LocalTime.class, new LocalTimeDeserializer(DateTimeFormatter.ofPattern(TIME_FORMAT)))
            .serializerByType(Date.class, new DateSerializer(true, new SimpleDateFormat(DATETIME_FORMAT))).deserializerByType(Date.class, new JsonDeserializer() {
                @Override
                public String deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
                    return p.getValueAsString();
                }
            }).deserializerByType(BigDecimal.class, new NumberDeserializers.BigDecimalDeserializer());
    }
}

@JsonFormat 注解的优先级比较高，会以 @JsonFormat 注解的时间格式为主。