javascript - 目前如何向 deepl 请求翻译？

Question

由于 DeepL 更新了他们的网站 ( https://www.deepl.com/translator ) 也使用的 API，因此当您通过 Java 或 Python 请求翻译时会出现错误。它说“请求太多”。一年前，来自 EmilioK 的答案（使用 DeepL API 翻译文本）奏效了。

由于他们的更新，API URL 更改为“ https://www2.deepl.com/jsonrpc ”。但反应是{"jsonrpc": "2.0","error":{"code":1042901,"message":"Too many requests."}}。通过网站翻译工作，所以他们似乎已经实施了背景调查。我已经尝试调试他们的 JavaScript 代码，但我不明白我做错了什么。最后，我尝试通过分析主页的网络流量来重新构建请求。也没有用。此外，似乎其他人也有同样的问题（https://github.com/EmilioK97/pydeepl/issues/12，https://github.com/vsetka/deepl-translator/issues/9）。

我将 Java 8 与 Apache HttpClient 4.5.8 一起使用：

private static final String BASE_URL = "https://www2.deepl.com/jsonrpc";
private static AtomicInteger requestId = new AtomicInteger(10000 * (int) Math.round(10000 * Math.random()));
private static final CloseableHttpClient HTTP_CLIENT = HttpClients.createDefault();

public void example() {
    HttpResponse httpResponse = HTTP_CLIENT.execute(generateRequest("Hello", "EN", "DE"), getContext());
    JSONObject response = new JSONObject(EntityUtils.toString(httpResponse.getEntity()));
    System.out.println(response.toString());
}

HttpContext getContext() {
    CookieStore cookieStore = new BasicCookieStore();
    BasicClientCookie cookie = new BasicClientCookie("LMTBID", "3389513b-e369-4810-a2f3-73b9405e0b0d|403992a1240e1eca6c6e98b428849a3c");

    cookie.setDomain(".deepl.com");
    cookie.setPath("/");
    cookie.setAttribute(ClientCookie.DOMAIN_ATTR, "true");

    cookieStore.addCookie(cookie);
    HttpContext localContext = new BasicHttpContext();
    localContext.setAttribute(HttpClientContext.COOKIE_STORE, cookieStore);

    return localContext;
}

HttpPost generateRequest(String text, String from, String to) {
    HttpPost request = new HttpPost(BASE_URL);
    StringEntity params = new StringEntity(getJsonRequest(text, from, to).toString(), StandardCharsets.UTF_8);

    request.addHeader(HttpHeaders.HOST, "www2.deepl.com");
    request.addHeader(HttpHeaders.USER_AGENT, "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0");
    request.addHeader(HttpHeaders.ACCEPT, "*/*");
    request.addHeader(HttpHeaders.ACCEPT_LANGUAGE, "de,en-US;q=0.7,en;q=0.3");
    request.addHeader(HttpHeaders.ACCEPT_ENCODING, "gzip, deflate, br");
    request.addHeader(HttpHeaders.REFERER, "https://www.deepl.com/translator");
    request.addHeader(HttpHeaders.CONTENT_TYPE, "text/plain");
    request.addHeader(HttpHeaders.CONNECTION, "keep-alive");
    request.addHeader("X-Requested-With", "XMLHttpRequest");
    request.addHeader("Origin", "https://www.deepl.com");
    request.addHeader("DNT", "1");
    request.addHeader("TE", "Trailers");

    request.setEntity(params);
    request.setConfig(requestConfig);

    return request;
}

private static JSONObject getJsonRequest(String text, String from, String to) {
    JSONObject send = new JSONObject();
    send.put("id", requestId.incrementAndGet());
    send.put("jsonrpc", "2.0");
    send.put("method", "LMT_handle_jobs");

    JSONObject paramsObject = new JSONObject();

    JSONArray jobsArray = new JSONArray();

    JSONObject jobsObject = new JSONObject();
    jobsObject.put("kind", "default");
    jobsObject.put("quality", "fast");
    jobsObject.put("raw_en_context_after", new JSONArray());
    jobsObject.put("raw_en_context_before", new JSONArray());
    jobsObject.put("raw_en_sentence", text);

    jobsArray.put(jobsObject);

    JSONObject langObject = new JSONObject();

    JSONArray userPreferredLangsArray = new JSONArray();
    userPreferredLangsArray.put(to);
    userPreferredLangsArray.put(from);

    langObject.put("source_lang_user_selected", from.getLanguageCode());
    langObject.put("target_lang", to);
    langObject.put("user_preferred_langs", userPreferredLangsArray);

    paramsObject.put("jobs", jobsArray);
    paramsObject.put("lang", langObject);
    paramsObject.put("priority", -1);
    paramsObject.put("timestamp", System.currentTimeMillis());

    send.put("params", paramsObject);

    return send;
}

结果应该是这样的，但我记不太清了：

{"result":{"source_lang":"EN","target_lang":"DE","translations":[{"beams":[{"postprocessed_sentence":"Hallo","score":0.5,"totalLogProb":0.3,"num_symbols":1},{"postprocessed_sentence":"Guten Tag","score":0.3,"totalLogProb":0.7,"num_symbols":2}]}]}}

标签： javascriptjavareverse-engineeringdeepl