I am using Jackson inside my Spring Boot project for generator JSON.
In my Java class I am using private LocalDateTime timestamp; Jackson converts it to JSON.
When timestamp contains for example: 2022-04-26T05:59:54:124530the JSON Object will receive 2022-04-26T05:59:54:12453
This causes an error in my receiving system which cannnot work with this date format. Unfortunantelly I am not able to change the receiving system.
Is there a way I can Jackson tell not to remove the zeros at the end?
LocaleDateTime class ha no static string format. It includes few options:
Custom Serialization will help you to achieve static output. In example below I use a format with 6 milliseconds digits just like in your case.
@JsonDeserialize(using = BodyDeserializer.class)
@JsonSerialize(using = BodySerializer.class)
public class Body {
public static final DATE_FORMAT = DateTimeFormatter.ofPattern("uuuu-MM-dd'T'HH:mm:ss:SSSSSS");
private LocalDateTime myDate;
public Body(LocalDateTime myDate) {
this.myDate = myDate;
}
public StrLocalDateTimeing getMyDate() { return myDate; }
}
public class BodyDeserializer extends JsonDeserializer {
@Override
public User deserialize(JsonParser jsonParser,
DeserializationContext deserializationContext) throws IOException {
ObjectCodec oc = jsonParser.getCodec();
JsonNode node = oc.readTree(jsonParser);
String date = node.get("myDate");
LocalDateTime myDate = LocalDateTime.from(Body.DATE_FORMAT.parse(date))
return new Body(myDate),
}
}
public class BodySerializer extends JsonSerializer {
@Override
public void serialize(Body body, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeStartObject();
jsonGenerator.writeNumberField("myDate", Body.DATE_FORMAT.format(body.getMyDate()));
jsonGenerator.writeEndObject();
}
}