但调试了一下午,就是获取不了数据,而用postman调试却可以获得正常的数据,输出的错误如下所示: 1Error warning:"Network access is disabled."2QIODevice::read (QDisabledNetworkReply): device not open 看了qt的QNetworkReply官方文档、查遍了国内外网站也没查出个啥,直到最后在官网上看了QNetworkAccessManager的...
QVariant(Invalid) 07-04 15:27:30:022 [ info sync.networkjob.lscol ]: LSCOL of QUrl("http:***/") FINISHED WITH STATUS QNetworkReply::NetworkError(UnknownNetworkError) "Network access is disabled." 07-04 15:27:30:024 [ warning sync.discovery ]: LSCOL job error "Network access is di...
#endif // IHTTPDOWNLOADS_H Implementation file: #include "ihttpdownloads.h" #include <QDebug> iHttpDownloadS::iHttpDownloadS(QObject *parent, QProgressBar *bar) : QObject(parent), _progressBar(bar) { _downloadManager = new QNetworkAccessManager(this); _timeOut = new QTimer(this); co...
首先,定义一个 QTimer,设置超时时间为 30000 毫秒(30 秒)并设置为单次触发。然后,使用QNetworkRequest 实现一个简单的网络请求,通过 QNetworkAccessManager::get() 开始获取 Qt官网的 HTML 页面内容。因为请求过程是异步的,所以通过使用 QEventLoop 启动一个事件循环让其同步处理,并将 QTimer的 timeout() 信号以...
QNetworkAccessManager manager; QNetworkReply *reply = manager.get(request); QEventLoop eventLoop; QObject::connect(reply, SIGNAL(finished()),&eventLoop, SLOT(quit())); eventLoop.exec(QEventLoop::ExcludeUserInputEvents); //对请求的返回异常进行处理 ...
Qt 是一个跨平台C++图形界面开发库,利用Qt可以快速开发跨平台窗体应用程序,在Qt中我们可以通过拖拽的方式将不同组件放到指定的位置,实现图形化开发极大的方便了开发效率,本章将重点介绍如何运用QNetworkAccessManager组件实现Web网页访问。 QNetworkAccessManager是Qt网络模块中的关键类,用于管理网络访问和请求。作为一个...
Qt是一种跨平台的C++应用程序开发框架,它提供了丰富的库和工具,可以用于开发各种类型的应用程序,包括前端开发、后端开发、移动开发等。其中,QNetworkAccessManager是Qt中用于处理网络请求的类,可以发送HTTP标头信息。 HTTP标头信息是在HTTP请求或响应中传输的元数据,用于描述请求或响应的属性和特性。通过发送HTTP标头...
Info: parent is a member of a parent element. You can qualify the access with its id to avoid this warning: anchors.fill: <id>.parent ^^^ Warning: C:/Data/projects/GammaRay/plugins/positioning/mapview.qml:36:25: Unqualified access [unqualified] target...
Qt/C++ - Lesson 065. The correspondence of HTTP errors to server response errors in QNetworkAccessManager. In one of the lessons, I worked with QNetworkAccessManager to get the content of the page from the site via the http protocol. Ther
Models access object instances explicitly. When working with models, it is necessary to provide persisted data for the model to access. Placing newly created object instances directly into a QMLListModelis not sufficient to maintain the lifetime of those instances, because doing so does not referen...