QNetworkAccessManager不起作用

Question

我有以下代碼：

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow),
    m_networkAccessManager(new QNetworkAccessManager(this))
{
    ui->setupUi(this);

    connect(m_networkAccessManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(replyForGeoCoordinates(QNetworkReply*)));
    getCoordinates();
}

void MainWindow::getCoordinates()
{
    std::string query = "http://maps.google.com/maps/api/geocode/json?address=warsaw&sensor=false&language=en";
    QNetworkRequest request(QUrl(QString::fromStdString(query)));
    m_reply = m_networkAccessManager->get(request);

    connect(m_reply, SIGNAL(finished()), this, SLOT(rep()));
    connect(m_reply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(slotError(QNetworkReply::NetworkError)));
    connect(m_reply, SIGNAL(readyRead()), this, SLOT(rep()));
}

並且我想將查詢發送到google服務器並獲得響應，但是當我發送請求時，上述所有插槽都不會被調用，那么我在做什么錯呢？ 如果我在瀏覽器中輸入該地址，則會得到一些數據。

Answer 1

好吧，我認為您在連接方面的錯誤。 在調用get()函數之前，必須先聲明它們。