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本篇内容介绍了“Qt怎么实现http服务”的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!
先看执行结果:
Qt HttpServer
左边是开启的Qt Http服务,监控服务端口,及接收客户端请求;右侧是浏览器访问服务。
下面是具体代码:
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服务未启动"; } else { qDebug() << "\nWeb服务在端口8080等待客户端连接"; } } void MyHttpServer::connection() { socket = server->nextPendingConnection(); while (!(socket->waitForReadyRead(100))); //等待从浏览器读取数据 char webBrowerRXData[1000]; int sv = socket->read(webBrowerRXData, 1000); qDebug() << "正在从浏览器读取数据=" << 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>测试Qt HttpServer</title>" "</header>" "<body>已连接秒数:"); QByteArray str; static qint16 count; //用于在浏览器上显示的统计数字 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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