qt http头文件

以下是Qt中使用HTTP网络请求的头文件和相关代码示例：

#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QJsonParseError>
#include <QJsonObject>
#include <QTime>

// 创建QNetworkAccessManager对象
QNetworkAccessManager *manager = new QNetworkAccessManager(this);

// 创建QNetworkRequest对象
QNetworkRequest request;
request.setUrl(QUrl("http://example.com"));

// 发送GET请求
QNetworkReply *reply = manager->get(request);

// 处理响应
connect(reply, &QNetworkReply::finished, [=]() {
    if (reply->error() == QNetworkReply::NoError) {
        QByteArray data = reply->readAll();
        QJsonParseError error;
        QJsonObject json = QJsonDocument::fromJson(data, &error).object();
        if (error.error == QJsonParseError::NoError) {
            // 解析JSON数据
            QString time = json.value("time").toString();
            QTime t = QTime::fromString(time, "hh:mm:ss");
            qDebug() << "Current time is:" << t.toString();
        }
    } else {
        qDebug() << "Error:" << reply->errorString();
    }
    reply->deleteLater();
});