Question

我是C ++初学者并使用Google任务API。

如何编写接受单词的C ++程序，然后调用Google Translate将其从英语翻译成法语，然后将生成的页面保存到本地文件？

例如，如果用户输入“river”，程序应调用Google Translate翻译成法语，结果页面为： http://translate.google.com/#en|fr|River%0A 该页面应该保存。

我完全阅读了官方文档：http://code.google.com/apis/language/translate/v2/getting_started.html 但我无法理解如何使用REST，而且我不熟悉JSON或AJAX。

Answer 1

有人建议我使用 libcurl ，我会尝试看看。

Answer 2

您需要某种HTTP库。我是Adrian所说的第二大部分，但是这里有一些（不完整的）Qt代码可以给你一个想法。

namespace {
    const QString API_KEY = /* TODO */;
}

MyQObject :: MyQbject ()
: m_manager (new QNetworkAccessManager (this))
{
    connect(manager, SIGNAL (finished (QNetworkReply *)),
            this, SLOT (reply_finished (QNetworkReply *)));
}

void MyQObject :: fetch_translation (
     QString words,
     void (*on_receive)(const QString &))
{
    // Let's assume asynchronous but non-concurrent requests.
    m_on_receive = on_receive;

    QString request =
        "https://www.googleapis.com/language/translate/v2"
        "?key=%1&source=en&target=de&q=%2";

    // May want to url-encode 'words' first.

    m_manager -> get (QUrl (request .arg (API_KEY) .arg (words));
}

void MyQObject :: reply_finished (QNetworkReply * reply)
{
    m_on_receive (reply -> readAll ());
}

// ...
{
    my_q_object -> translate ("hello, world", [](const QString & s) {
        qWarning () << "translation is: " << s;
    });
}

Answer 3

我在某处看到了这些代码，但我不记得在哪里，无论如何都试试这个：

QString YourClass::translate(QString keyword, QString from, QString to)
{
    //Translate URL
    QString url = QString("http://translate.google.com/translate_a/t?client=t&text=%0&hl=%1&sl=%2&tl=%1&multires=1&prev=enter&oc=2&ssel=0&tsel=0&uptl=%1&sc=1").arg(keyword).arg(to).arg(from);

    QNetworkAccessManager manager;
    QNetworkRequest request(url);
    QNetworkReply *reply = manager.get(request);

    //Get reply from Google
    do {
        QCoreApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
    } while(!reply->isFinished());

    //Convert to string
    QString translation(reply->readAll());
    reply->close();

    //Free memory
    delete reply;

    //Remove [[[" from the beginning
    translation = translation.replace("[[[\"", "");

    //Extract final translated string
    translation = translation.mid(0, translation.indexOf(",\"") - 1);

    return translation;
}

如何使用谷歌翻译API与c ++

3 个答案: