如何使用Jackson和RestTemplate将24小时日期字符串反序列化为LocalDate

Question

I have the following...

public static final String DATE_PATTERN = "yyyy-MM-dd'T'hh:mm:ss.SSSZ";
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = DATE_PATTERN)
private LocalDate created;

return this.restTemplate.postForObject(url, entity, SearchResult.class);

When I run the code it errors out with the following...

java.time.DateTimeException: Invalid value for ClockHourOfAmPm (valid values 1 - 12): 13
    at java.base/java.time.temporal.ValueRange.checkValidValue(ValueRange.java:311) ~[na:na]
    at java.base/java.time.temporal.ChronoField.checkValidValue(ChronoField.java:717) ~[na:na]

How do I deserialize this to a LocalDate? Regular Java7 date works fine.

The Final Solution Looks like this

public static final String DATE_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";

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), DateTimeFormatter.ofPattern(JiraService.DATE_PATTERN));
    }
}

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.ofPattern(JiraService.DATE_PATTERN)));
    }
}

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

Answer 1

hh is for 1-12 hour format, use HH for 0-23 hour format, see SimpleDateFormat docs. You need:

public static final String DATE_PATTERN = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";

Older classes like SimpleDateFormat or Calendar are lenient by default so they are silently fixing the date by moving it forward by the overflowing field offset. That's why you are not supposed to use them anymore.