c++ - Twitter OAuth2 的 QNetworkRequest 返回禁止错误

Question

我一直在努力使 Twitter API 的应用程序唯一身份验证在 Qt 上工作。当我运行我的代码时，出现此错误:

Failure "Error transferring https://api.twitter.com/oauth2/token - server replied: Forbidden"

这是我的请求代码:

    QJsonObject params;
    params.insert("grant_type","client_credentials");

    QUrl url("https://api.twitter.com/oauth2/token");

    QNetworkRequest request;
    request.setUrl(url);
    QString authorizationKey =  m_consumerKey + ":" + m_consumerSecret;
    QByteArray encryptedAuth = authorizationKey.toUtf8().toBase64();
    request.setRawHeader("User-Agent", "My App v1.0.0");
    request.setRawHeader("Authorization", "Basic "+ encryptedAuth);
    request.setRawHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
    request.setSslConfiguration(QSslConfiguration::defaultConfiguration());

    QNetworkReply* reply = m_networkManager->post(request, QJsonDocument(params).toJson());

也许我错过了什么？

Answer 1

我能够解决这个问题。事实证明，我发送的请求正文格式错误。我改变了:

QJsonObject params;
params.insert("grant_type","client_credentials");
...
QNetworkReply* reply = m_networkManager->post(request, QJsonDocument(params).toJson());

到:

QUrlQuery payload;
payload.addQueryItem("grant_type","client_credentials");
QByteArray postData = payload.query(QUrl::FullyEncoded).toUtf8();
...
QNetworkReply* reply = m_networkManager->post(request, postData);