gson格式转换
public ApiClient(){this.setGson(new GsonBuilder()
        .registerTypeAdapter(OffsetDateTime.class, new OffsetDateTimeDeserializer())
        .create());}
public class OffsetDateTimeDeserializer implements JsonDeserializer<OffsetDateTime> {
    @Override
    public OffsetDateTime deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        String dateString = json.getAsJsonPrimitive().getAsString();
        try {
            DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ssZ");
            return OffsetDateTime.parse(dateString, formatter);
        } catch (DateTimeParseException e) {
            throw new JsonParseException("Unable to parse date string: " + dateString, e);
        }
    }
}