Qt简单发布请求

Question

我正在寻找一个非常简单的POST请求到网页。页面是在php中，将采取任何发布的检查对数据库，然后如果项目在数据库中，则使用密钥进行响应。

我不知道如何在Qt中使用post请求或如何获取返回的信息并将其存储回Qt中的变量。任何帮助都会受到高度赞赏，因为我从Qt方面的空白开始。

我看过其他例子：

https://stackoverflow.com/questions/11348359/qt-https-post-request

How can I POST data to a url using QNetworkAccessManager

但我没有看到如何存储PHP脚本的响应

Answer 1

将完成的QNetworkAccessManager信号连接到您的插槽并使用QNetworkReply您应该阅读该网页的所有内容。

这是一个例子，它可以很容易地适应post方法。

void MainWindow::on_pushButton_clicked()
{
    QNetworkAccessManager * mgr = new QNetworkAccessManager(this);
    connect(mgr,SIGNAL(finished(QNetworkReply*)),this,SLOT(onfinish(QNetworkReply*)));
    connect(mgr,SIGNAL(finished(QNetworkReply*)),mgr,SLOT(deleteLater()));

    mgr->get(QNetworkRequest(QUrl("http://www.google.com")));

}

void MainWindow::onfinish(QNetworkReply *rep)
{
    QByteArray bts = rep->readAll();
    QString str(bts);
    QMessageBox::information(this,"sal",str,"ok");

}

Answer 2

opc0de以前的回答不是对我的POST，而是GET。

以下是如何执行POST请求

void xxx::postRequest(QByteArray & postData)
{
    QUrl url = QUrl("abc.com");


    QNetworkAccessManager * mgr = new QNetworkAccessManager(this);

    connect(mgr,SIGNAL(finished(QNetworkReply*)),this,SLOT(onFinish(QNetworkReply*)));
    connect(mgr,SIGNAL(finished(QNetworkReply*)),mgr,SLOT(deleteLater()));

    QHttpMultiPart http;

    QHttpPart receiptPart;
    receiptPart.setHeader(QNetworkRequest::ContentDispositionHeader, QVariant("form-data; name=\"data\""));
    receiptPart.setBody(postData);

    http.append(receiptPart);

    mgr->post(QNetworkRequest(url), http);
}

void xxx::onFinish(QNetworkReply *rep)
{

}

来自doc here.

Answer 3

QNetworkAccessManager * manager = new QNetworkAccessManager(this);

QUrl url("https://accounts.google.com/o/oauth2/token");
QNetworkRequest request(url);

request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded");

QUrlQuery params;
params.addQueryItem("client_id", "...");
params.addQueryItem("client_secret", "...");
params.addQueryItem("code", "...");
// etc

connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(replyFinished(QNetworkReply *)));

manager->post(request, params.query().toUtf8());

source