使用QHttp与C#编写的服务端交互（编译环境mingw）

最新推荐文章于 2025-09-04 15:29:44 发布

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最新推荐文章于 2025-09-04 15:29:44 发布

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文章标签： php

原文链接：http://www.cnblogs.com/yuanxiaoping_21cn_com/archive/2012/12/02/2798461.html

本文介绍如何在Qt Creator中创建一个简单的HTTP客户端项目，并通过示例代码展示如何使用QHttp类发送POST请求，监听连接状态变化及数据传输进度。

打开qtcreator，新建一个项目，然后加一个头文件及源代码文件，如下：

QtHttp.h:

#ifndef QTHTTP_H

#define QTHTTP_H

#include <Qt/QObject.h>

#include <Qt/qhttp.h>

#include <QtCore/QString>

#include <QtDebug>

#include <Qt/qbytearray.h>

class QtHttp : QObject {

Q_OBJECT

public:

 QtHttp();

 virtual ~QtHttp();

private:

 QHttp *http;

 QByteArray httptext;

public slots:

 void on_PushButtonPost_clicked();

 void on_http_stateChanged(int stat);

 void on_http_dataReadProgress(int done, int total);

 void on_http_dataSendProgress(int done, int total);

 void on_http_done(bool error);

 void on_http_requestFinished(int id, bool error);

 void on_http_requestStarted(int id);

 void on_http_responseHeaderReceived(const QHttpResponseHeader &resp);

};

#endif // QTHTTP_H

QtHttp.cpp:

#include "QtHttp.h"

QtHttp::QtHttp() {

http = new QHttp();

http->setObjectName("http");

connect(http, SIGNAL(stateChanged(int)), this, SLOT(on_http_stateChanged(int)));

connect(http, SIGNAL(dataReadProgress(int, int)), this, SLOT(on_http_dataReadProgress(int, int)));

connect(http, SIGNAL(dataSendProgress(int, int)), this, SLOT(on_http_dataSendProgress(int, int)));

connect(http, SIGNAL(done(bool)), this, SLOT(on_http_done(bool)));

connect(http, SIGNAL(requestFinished(int, bool)), this, SLOT(on_http_requestFinished(int, bool)));

connect(http, SIGNAL(requestStarted(int)), this, SLOT(on_http_requestStarted(int)));

connect(http, SIGNAL(responseHeaderReceived(const QHttpResponseHeader &)), this, SLOT(on_http_responseHeaderReceived(const QHttpResponseHeader &)));

}

QtHttp::~QtHttp() {

delete http;

http = NULL;

}

void QtHttp::on_http_stateChanged(int stat)

{

switch (stat)

{

case QHttp::Unconnected : qDebug() << "Unconnected\n" ;

break;

case QHttp::HostLookup : qDebug() << "HostLookup\n" ;

break;

case QHttp::Connecting : qDebug() << "Connecting\n" ;

break;

case QHttp::Sending : qDebug() << "Sending\n" ;

break;

case QHttp::Reading : qDebug() << "Reading\n" ;

break;

case QHttp::Connected : qDebug() << "Connected\n" ;

break;

case QHttp::Closing : qDebug() << "Closing\n" ;

break;

}

void QtHttp::on_http_dataReadProgress(int done, int total)

{

qDebug() << "Downloaded " << done << " bytes " << " out of " << total << "\n";

}

void QtHttp::on_http_dataSendProgress(int done, int total)

{

qDebug() << "Sended " << done << " bytes " << " out of " << total << "\n";

}

void QtHttp::on_http_done(bool error)

{

if (error)

{

qDebug() << http->errorString() << "\n";

}

else

{

qDebug() << "Session finished successfully\n";

//buffer.close();

httptext = http->readAll();

qDebug() << "Received Size: " << httptext.count() << "\n";

QString strSource(httptext);

qDebug() << httptext;

}

void QtHttp::on_http_requestFinished(int id, bool error)

{

qDebug() << id <<" Request Finished\n";

if (error)

{

qDebug() << "with errors\n";

qDebug() << http->errorString() << "\n";

}

else

{

qDebug() << " successfully \n";

}

void QtHttp::on_http_requestStarted(int id)

{

qDebug() << "Request Started\n";

}

void QtHttp::on_http_responseHeaderReceived(const QHttpResponseHeader &resp)

{

qDebug() << "HTTP response header received \n";

}

void QtHttp::on_PushButtonPost_clicked()

{

QString data("name=你好中国&id=1234567890&addr=asdfghjkl");

//http.post("http://localhost/biselaw/SalesReport.xml", data, &file);

buffer.setData(httptext);

buffer.open(QIODevice::WriteOnly);

qDebug() << "Post Data: " << data << "\n";

http->setHost("localhost");

//http->post("/biselaw/vote.php", data.toUtf8());

QHttpRequestHeader header("POST", "/temp/default.aspx") ;

header.setValue("Host", "localhost") ;

header.setContentType("application/x-www-form-urlencoded");

http->request(header, data.toUtf8()) ;

//QString strBuffer(httptext);

//TextEditHttp->setHtml(strBuffer);

}

注意还需要在qt.pro里加上

QT += network

才能编译，应该是引用库吧

转载于:https://www.cnblogs.com/yuanxiaoping_21cn_com/archive/2012/12/02/2798461.html