Qt如何實(shí)現(xiàn)http服務(wù)

發(fā)布時(shí)間：2021-12-03 13:44:04 來(lái)源：億速云閱讀：4441 作者：小新欄目：大數(shù)據(jù)

這篇文章將為大家詳細(xì)講解有關(guān)Qt如何實(shí)現(xiàn)http服務(wù)，小編覺(jué)得挺實(shí)用的，因此分享給大家做個(gè)參考，希望大家閱讀完這篇文章后可以有所收獲。

先看執(zhí)行結(jié)果：

左邊是開啟的Qt Http服務(wù)，監(jiān)控服務(wù)端口，及接收客戶端請(qǐng)求；右側(cè)是瀏覽器訪問(wèn)服務(wù)。

下面是具體代碼：

HttpDemo.pro

QT += core
QT += network
QT -= gui

CONFIG += c++11 console
CONFIG -= app_bundle

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
        main.cpp \
        myhttpserver.cpp

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

HEADERS += \
    myhttpserver.h

myhttpserver.h

#ifndef MYHTTPSERVER_H
#define MYHTTPSERVER_H

#include <QObject>
#include <QTcpServer>
#include <QTcpSocket>

class MyHttpServer : public QObject
{
    Q_OBJECT
public:
    explicit MyHttpServer(QObject *parent = nullptr);
    ~MyHttpServer();

    QTcpSocket *socket;

public slots:
    void connection();

private:
    qint64 bytesAvailable() const;
    QTcpServer *server;

signals:

public slots:
};

#endif // MYHTTPSERVER_H

main.cpp

#include <QCoreApplication>
#include "myhttpserver.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    MyHttpServer server;

    return a.exec();
}

myhttpserver.cpp

#include "myhttpserver.h"
#include <QDebug>

MyHttpServer::MyHttpServer(QObject *parent) : QObject(parent)
{
    server = new QTcpServer(this);
    connect(server, &QTcpServer::newConnection, this, &MyHttpServer::connection);
    if(!server->listen(QHostAddress::Any, 8080))
    {
        qDebug() << "\nWeb服務(wù)未啟動(dòng)";
    }
    else
    {
         qDebug() << "\nWeb服務(wù)在端口8080等待客戶端連接";
    }
}

void MyHttpServer::connection()
{
    socket = server->nextPendingConnection();

    while (!(socket->waitForReadyRead(100))); //等待從瀏覽器讀取數(shù)據(jù)

    char webBrowerRXData[1000];
    int sv = socket->read(webBrowerRXData, 1000);
    qDebug() << "正在從瀏覽器讀取數(shù)據(jù)=" << QString(webBrowerRXData);

    socket->write("HTTP/1.1 200 OK\r\n");       // \r needs to be before   \n
    socket->write("Content-Type: text/html\r\n");
    socket->write("Connection: close\r\n");
    socket->write("Refresh: 1\r\n\r\n");        //refreshes web brower   every second.Request

    socket->write("<!DOCTYPE>"
                  "<html>"
                      "<header>"
                        "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />"
                        "<title>測(cè)試Qt HttpServer</title>"
                      "</header>"
                      "<body>已連接秒數(shù)：");
    QByteArray str;
    static qint16 count;    //用于在瀏覽器上顯示的統(tǒng)計(jì)數(shù)字
    str.setNum(count++);
    socket->write(str);
    socket->write("</body>"
                  "</html>");

    socket->flush();
    connect(socket, &QTcpSocket::disconnected, socket, &QTcpSocket::deleteLater);
    socket->disconnectFromHost();

}


MyHttpServer::~MyHttpServer()
{
    socket->close();
}

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