Use Translation API tip 403 What parameters are missing

[tjuzdy]

When I call the API in Java, it tip 403
java program as follows

public final class Translator {
private static String urlApi = "https://translate.fedilab.app/translate";

public static String translate(@NonNull String from, @NonNull String to, @NonNull String request) {
    if (from == null) {
        throw new NullPointerException("from is marked non-null but is null");
    } else if (to == null) {
        throw new NullPointerException("to is marked non-null but is null");
    } else if (request == null) {
        throw new NullPointerException("request is marked non-null but is null");
    } else {
        try {
            URL url = new URL(urlApi);
            HttpURLConnection httpConn = (HttpURLConnection)url.openConnection();
            httpConn.setRequestMethod("POST");
            httpConn.setRequestProperty("accept", "application/json");
            httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            httpConn.setDoOutput(true);
            OutputStreamWriter writer = new OutputStreamWriter(httpConn.getOutputStream());
            writer.write("q=" + URLEncoder.encode(request, "UTF-8") + "&source=" + from + "&target=" + to + "&format=text");
            writer.flush();
            writer.close();
            httpConn.getOutputStream().close();
            if (httpConn.getResponseCode() / 100 != 2) {
                throw new BadTranslatorResponseException(httpConn.getResponseCode(), urlApi);
            } else {
                InputStream responseStream = httpConn.getInputStream();
                Scanner s = (new Scanner(responseStream)).useDelimiter("\\A");
                String response = s.hasNext() ? s.next() : "";
                return ((TranslateResponse)JsonUtil.from(response, TranslateResponse.class)).getTranslatedText();
            }
        } catch (Exception var9) {
            var9.printStackTrace();
            throw new RuntimeException(var9);
        }
    }
}

public static String translate(@NonNull Language from, @NonNull Language to, @NonNull String request) {
    if (from == null) {
        throw new NullPointerException("from is marked non-null but is null");
    } else if (to == null) {
        throw new NullPointerException("to is marked non-null but is null");
    } else if (request == null) {
        throw new NullPointerException("request is marked non-null but is null");
    } else {
        return to != Language.NONE && from != to ? translate(from.getCode(), to.getCode(), request) : request;
    }
}

public static String translate(@NonNull Language to, @NonNull String request) {
    if (to == null) {
        throw new NullPointerException("to is marked non-null but is null");
    } else if (request == null) {
        throw new NullPointerException("request is marked non-null but is null");
    } else {
        return to == Language.NONE ? request : translate("auto", to.getCode(), request);
    }
}

private Translator() {
    throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
}

public static void setUrlApi(String urlApi) {
    Translator.urlApi = urlApi;
}

}

[pierotofy]

Check https://github.com/dynomake/libretranslate-java for bindings to use LibreTranslate in Java?