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)，小編覺得挺實(shí)用的，因此分享給大家做個參考，希望大家閱讀完這篇文章后可以有所收獲。

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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，及接收客戶端請求；右側(cè)是瀏覽器訪問服務(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 
#include 
#include 

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 
#include "myhttpserver.h"

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

   MyHttpServer server;

   return a.exec();
}

myhttpserver.cpp

#include "myhttpserver.h"
#include 

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";
   }
   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   
   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(""
                 ""
                     "
"
                       ""
                       ""
                     "
"
                     "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(""
                 "");

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

}


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

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