SpringBoot jackson提供对LocalDate的支持方式

spring.jackson.date-format=yyyy-MM-dd
spring.jackson.time-zone=GMT+8
spring.jackson.serialization.write-dates-as-timestamps=false

<dependency>
      <groupId>com.fasterxml.jackson.datatype</groupId>
      <artifactId>jackson-datatype-jsr310</artifactId>
      <version>2.8.9</version>
</dependency>

@SpringBootApplication
public class GroupApplication {
    public static void main(String[] args) {
        SpringApplication.run(GroupApplication.class, args);
    }
 
    /**
     * 提供jackson对LocalDate等java8提供的日期的序列化支持
     */
 
    @Bean(name = "mapperObject")
    public ObjectMapper getObjectMapper() {
        ObjectMapper om = new ObjectMapper();
        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")));
        om.registerModule(javaTimeModule);
        return om;
    }
}

{
    "dayOfWeek": "FRIDAY",
    "month": "JANUARY",
    "year": 2020,
    "dayOfMonth": 3,
    "era": "CE",
    "dayOfYear": 3,
    "monthValue": 1,
    "chronology": {
        "calendarType": "iso8601",
        "id": "ISO"
    }
}

public class LocalDateDeserializer extends StdDeserializer<LocalDate> {
    protected LocalDateDeserializer() {
        super(LocalDate.class);
    }
    @Override
    public LocalDate deserialize(JsonParser parser, DeserializationContext context) throws IOException {
        return LocalDate.parse(parser.readValueAs(String.class));
    }
}

public class LocalDateSerializer extends StdSerializer<LocalDate> {
    public LocalDateSerializer() {
        super(LocalDate.class);
    }
    @Override
    public void serialize(LocalDate value, JsonGenerator generator, SerializerProvider provider) throws IOException {
        generator.writeString(value.format(DateTimeFormatter.ISO_LOCAL_DATE));
    }
}

    @JsonDeserialize(using = LocalDateDeserializer.class)
    @JsonSerialize(using = LocalDateSerializer.class)
    private LocalDate date;