thanks 在2021年1月22日星期五 UTC+8 下午7:05:23<[email protected]> 写道：
> That timestamp you have (2019-05-08T07:45:44.519Z) is an ISO-8601 instant. > If you .register(JavaTimeModule()) (which is provided by > jackson-modules-java8 <https://github.com/FasterXML/jackson-modules-java8>) > in your ObjectMapper it will be able to deserialize that into a > java.time.Instant without any other configuration. Thereafter, you can > convert that into the timezone you > > Example in Kotlin: > > import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule > import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper > import com.fasterxml.jackson.module.kotlin.readValue > import java.time.Instant > > fun main() { > data class TimeHolder(val time: Instant) > > val objectMapper = jacksonObjectMapper() > .registerModule(JavaTimeModule()) > > val thing = objectMapper.readValue<TimeHolder>("""{"time" : > "2019-05-08T07:45:44.519Z"}""") > > println(thing) // TimeHolder(time=2019-05-08T07:45:44.519Z) > println(thing.time.atZone(ZoneId.of("Asia/Brunei"))) // > 2019-05-08T15:45:44.519+08:00[Asia/Brunei] > } > > -Drew > > On Thursday, January 21, 2021 at 11:42:45 PM UTC-5 [email protected] > wrote: > >> Hello: >> >> How can I use annotations to deserialize Greenwich Time into LocalTime? >> Here is Demo class: >> public class Demo implements Serializable { private LocalDateTime time; >> // setter getter ... } >> >> Here is Demo JSON: >> {"time" : "2019-05-08T07:45:44.519Z"} >> >> The time I expect to get is 2019-05-08T15:45:44.519, but what I get is: >> 2019-05-08T07:45:44.519 >> >> Now I'm using custom deserialized classes to solve the problem: >> public class LocalDateTimeDeserializer extends >> JsonDeserializer<LocalDateTime> { private static final String ZULU = "Z"; >> @Override public LocalDateTime deserialize(JsonParser jsonParser, >> DeserializationContext deserializationContext) throws IOException, >> JsonProcessingException { String text = jsonParser.getText(); if >> (text.endsWith(ZULU)) { return LocalDateTime.ofInstant(Instant.parse(text), >> ZoneId.systemDefault()); } else { return LocalDateTime.parse(text, >> DateTimeFormatter.ISO_LOCAL_DATE_TIME); } } } public class Demo implements >> Serializable { @JsonDeserialize(using = >> CustomLocalDateTimeDeserializer.class) private LocalDateTime time; // >> setter getter ... } >> >> Is there any other way? >> I would appreciate your help. >> > -- You received this message because you are subscribed to the Google Groups "jackson-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jackson-user/37705af8-3534-4ba4-a5c5-431ddcb1357an%40googlegroups.com.
