gistfile1.java

@DatabaseTable(tableName="albums")
public class Album {
  @JsonProperty("updated_at")
  @JsonSerialize(using=JodaDateTimeTimestampSerializer.class)
  @JsonDeserialize(using=JodaDateTimeTimestampDeserializer.class)
  @DatabaseField
  private long updatedAt;
}

// serializer
public class JodaDateTimeTimestampSerializer extends JsonSerializer<DateTime> {
  @Override
  public void serialize(DateTime value, JsonGenerator jgen, SerializerProvider provider) throws IOException, JsonProcessingException {
    jgen.writeNumber(DateUtil.dateTimeToString(value));
  }
}


// deserializer
public class JodaDateTimeTimestampDeserializer extends JsonDeserializer<Long> {
  @Override
  public Long deserialize(JsonParser parser, DeserializationContext context) throws IOException, JsonProcessingException {
    return(DateUtil.stringToLong(parser.getText()));
  }
}

// DateUtil
public class DateUtil {
  public static String dateTimeToString(DateTime date) {
    return(date.toString(getFormatter()));
  }

  public static long stringToLong(String date) {
    DateTime parsed = getFormatter().parseDateTime(date);
    return(parsed.getMillis() / 1000);
  }

  private static DateTimeFormatter getFormatter() {
    return(DateTimeFormat.forPattern("yyyy-MM-dd'T'HH:mm:ss'Z'").withZone(DateTimeZone.forID("UTC")));
  }
}