Jackson will give you null for other objects, but for String it will give empty String.
But you can use a Custom JsonDeserializer
to do this:
class CustomDeserializer extends JsonDeserializer<String> {
@Override
public String deserialize(JsonParser jsonParser, DeserializationContext context) throws IOException, JsonProcessingException {
JsonNode node = jsonParser.readValueAsTree();
if (node.asText().isEmpty()) {
return null;
}
return node.toString();
}
}
In class you have to use it for location field:
class EventBean {
public Long eventId;
public String title;
@JsonDeserialize(using = CustomDeserializer.class)
public String location;
}