I have a model class that has a field:
@JsonDeserialize(using = InstantDeserializer.class)
@JsonFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss.SSSZ")
private OffsetDateTime offsetDt;
When a request of this model is sent to the server, my controller throws an exception:
Caused by: java.lang.IllegalArgumentException:
Class com.fasterxml.jackson.datatype.jsr310.deser.InstantDeserializer
has no default (no arg) constructor
The pom.xml has the dependency of version 2.8.11:
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-jsr310</artifactId>
</dependency>
I understand that it is caused by @JsonDeserialize requiring no-arg constructor, but is there a workaround?
The error says that you need a class with no arg constructor, so you could extend from InstantDeserializer
. (Take as example the code in InstantDeserializer
for the arguments of super()
)
public class DefaultInstantDeserializer extends InstantDeserializer<OffsetDateTime> {
public DefaultInstantDeserializer() {
super(OffsetDateTime.class, DateTimeFormatter.ISO_OFFSET_DATE_TIME,
OffsetDateTime::from,
a -> OffsetDateTime.ofInstant(Instant.ofEpochMilli(a.value), a.zoneId),
a -> OffsetDateTime.ofInstant(Instant.ofEpochSecond(a.integer, a.fraction), a.zoneId),
(d, z) -> d.withOffsetSameInstant(z.getRules().getOffset(d.toLocalDateTime())),
true);
}
}
Then you can use it:
@JsonDeserialize(using = DefaultInstantDeserializer.class)