Ok, first things first: I don't think you need to configure separate
serializer/deserializer here, but call
ObjectMapper.setDateFormat(new SimpleDateFormat(....))
or alternatively, if you are using Jackson 2.8, may also define
default format for Date:
mapper.configOverride(Date.class)
.setFormat(JsonFormat.Value.forPattern("....));
These methods are more robust as they do not rely on knowing internals
of serializer/deserializer.
But as to registration approach: there is nothing special about
registration, although you should just be using `SimpleModule` and not
trying to add anything to `JavaTimeModule`. The only possible
complication I can think of is that since there are 2 methods:
public SimpleModule addSerializer(JsonSerializer<?> ser) { }
public <T> SimpleModule addSerializer(Class<? extends T> type,
JsonSerializer<T> ser) { }
in latter case type bounds may make compiler complain without casts.
If so, you would just need to cast serializer instance to have type
`JsonSerializer<Date>`.
I hope this helps,
-+ Tatu +-
ps. This is usage question, so really should go in `jackson-user`, not `jack
On Thu, Mar 16, 2017 at 10:13 AM, Dam <[email protected]> wrote:
> Hello,
>
> I declare a custom object mapper with a DateSerializer with a custom format
> like this :
>
> public class CustomObjectMapper extends ObjectMapper
> {
> public CustomObjectMapper()
> {
> configure();
> }
>
> private void configure()
> {
> super.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS,
> false);
> JavaTimeModule module = new JavaTimeModule();
> module.addSerializer(Date.class, new DateSerializer(false, new
> SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'")));
> super.registerModule(module);
> }
> }
>
> And it's OK, but when I want to add a deserializer, I'm expected to do
> something like this :
>
> module.addDeserializer(Date.class, new
> DateDeserializer("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"));
>
> But it's doesn't work because the signature is :
>
> com.fasterxml.jackson.databind.deser.std.DateDeserializers.DateDeserializer.DateDeserializer(DateDeserializer
> base, DateFormat df, String formatString)
>
>
> What I have to put in "DateDeserializer base" and in String formatString ?
> I suspect an inconsistency in the code or I don't understand the usage of
> DateDeserializer ? Someone can help me ?
>
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