Qt 调用 百度翻译api

int Translate::BaiduTranslate(QString p_srcData, QString p_fromType, QString& p_translate, QString p_toType)
{
    //把所有的换行改成空格
    p_srcData.replace("\n", " ");
    //非空就翻译
    if (p_srcData.isEmpty())
    {
        return -1;
    }
    //拼接签名
    // m_strAppID ：开放平台账号 
    // m_strSalt ：随机码
    // m_strKey：平台分配的密钥
    QString sign = m_strAppID + p_srcData + m_strSalt + m_strKey;
    //生成md5
    QString md5 = QCryptographicHash::hash(sign.toUtf8(), QCryptographicHash::Md5).toHex();
    QString status = "q=" + p_srcData.toUtf8().toPercentEncoding() + "&from=" + p_fromType + "&to=" \
            + p_toType + "&appid=" + m_strAppID + "&salt=" + m_strSalt + "&sign=" + md5;
    //设置网络 发送请求
    QNetworkRequest request;
    request.setUrl(QUrl("http://api.fanyi.baidu.com/api/trans/vip/translate?"));
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");
    request.setHeader(QNetworkRequest::ContentLengthHeader, status.length());

    QTimer timer;
    timer.setInterval(10000);  // 设置超时时间 10 秒
    timer.setSingleShot(true);  // 单次触发
    QNetworkAccessManager networkManager;
    QNetworkReply *pReply = networkManager.post(request, status.toUtf8());
    QEventLoop loop;
    connect(&timer, &QTimer::timeout, &loop, &QEventLoop::quit);
    connect(pReply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
    timer.start();
    loop.exec();

    if (timer.isActive())
    {
        // 处理响应
        timer.stop();
        if (pReply->error() != QNetworkReply::NoError)
        {
            // 错误处理
            qDebug()<<QString("QNetworkReply Error String : " + pReply->errorString());
            return -1;
        }
        else
        {
            //获得接受数据的形式
            QVariant rep = pReply->attribute(QNetworkRequest::HttpStatusCodeAttribute);

            QByteArray data = pReply->readAll();

            //如果有错误的序列号
            int errorIndex = data.indexOf("error_code");
            if (errorIndex != -1)
                return errorIndex;

            //用一个js类型变量获得返回值的内容
            QJsonObject jsData(QJsonDocument::fromJson(data).object());
            p_translate = jsData["trans_result"].toArray()[0].toObject()["dst"].toString();
            if (p_translate.endsWith("."))
                p_translate.remove(p_translate.length(), 1);
            qDebug()<<QString("QNetworkReply Translate Success from : " + p_srcData + " ===> " + p_translate);
            return 0;
        }
    }
    else
    {  // 处理超时
        disconnect(pReply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
        pReply->abort();
        pReply->deleteLater();
         qDebug()<<QString("QNetworkReply Timeout String : " + p_srcData);
        return -1;
    }
    return 0;
}