qt发帖并获取请求

Question

我正在尝试登录网页，然后下载一些只有会员才能下载的数据。

我进行后请求，并得到要求，由于某种原因，得到请求的第一个成品。

有什么办法可以等待帖子完成或先完成吗？

编辑：

void downloader::LoginToHost() 
{ 
    QNetworkRequest request(QUrl("http://www.example.com/login.php")); 
    request.setHeader(QNetworkRequest::ContentTypeHeader,QVariant("application/x-www-form-urlencoded")); 

    QByteArray data("email=example&password="); 
    manager->post(request,data); 
} 

void downloader::Do_Request(QUrl url) 
{ 
    manager->get(QNetworkRequest(url)); 
} 

void downloader::finished(QNetworkReply * reply) 
{ 
    QMessageBox mess; 

    if(reply->error() == QNetworkReply::NoError) 
    { 
     std::ofstream source("source-code.txt"); 
     QString content = reply->readAll(); 
     source << content.toStdString() << std::endl; 
     source.close(); 

     mess.setText("Done download!"); 
    } 
    else mess.setText(reply->errorString()); 

    mess.exec(); 
} 

Answer 1

帖子发送和不发送GET，直到后收益和触发QNetworkReply的finished信号。

假设有两个请求，一个岗位，一个是GET，你已经设置了，这里是你能做什么大纲： -

QNetworkRequst postRequest; 
QNetworkRequest getRequest; 

发送postRequest返回一个QNetworkReply ...

QNetworkAccessManager* networkAccessManager = new QNetworkAccessManager; 

QNetworkReply postReply = networkAccessManager->post(postRequest, someData); 
QNetworkReply getReply = nullptr; // C++ 11 nullptr 

然后，您可以连接到postReply完成信号： -

// using a connection to a lambda function, send the get request when post has finished 
connect(postReply, &QNetworkReply::finished, [this, networkAccessManager, getRequest, getReply](){ 

    // handle the reply... 
    ... 
    // send the getRequest 
    getReply = networkAccessManager->get(getRequest); 

});