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我試圖實現http://developer.nokia.com/community/wiki/Creating_an_HTTP_network_request_in_Qt和我的代碼編譯沒有錯誤,但不起作用。我在「QNetworkReply * reply = nam-> get(QNetworkRequest(url))」中回覆了一條警告;「沒有被使用。我確信這是我的錯誤,我沒有正確設置HTTP GET,但我不確定如何更正它。QNetworkAccessManager無法正確執行
//coreEng.h
#ifndef COREENG_H
#define COREENG_H
#include <QObject>
#include <QNetworkAccessManager>
class coreEng : public QObject
{
Q_OBJECT
public:
//coreEng(QObject);
coreEng(QObject *parent = 0) :
QObject(parent)
{
nam = new QNetworkAccessManager();
}
private slots:
public slots:
void connect();
void url(QNetworkReply *reply);
void finishedSlot(QNetworkReply* reply);
private:
QNetworkAccessManager* nam;
};
#endif // COREENG_H
//coreEng.cpp
"coreeng.h"
#include <QNetworkAccessManager>
#include <QUrl>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QImageReader>
void coreEng::connect(){
QObject::connect(nam, SIGNAL(finished(QNetworkReply*)),
this, SLOT(finishedSlot(QNetworkReply*)));
}
void coreEng::url(QNetworkReply*){
QUrl url("http://www.nyctelecomm.com");
QNetworkReply* reply = nam->get(QNetworkRequest(url));
}
void coreEng::finishedSlot(QNetworkReply* reply){
QVariant statusCodeV = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
QVariant redirectionTargetUrl = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
if (reply->error() == QNetworkReply::NoError)
{
QImageReader imageReader(reply);
QImage pic = imageReader.read();
QByteArray bytes = reply->readAll(); // bytes
QString string(bytes); // string
}
else
{
}
//delete reply();
}
//main.cpp
#include <QCoreApplication>
#include "coreeng.h"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
coreEng mConnect;
mConnect.connect();
return a.exec();
}
嘗試使用調試器。 – dbanet
@dbanet沒有數據包離開NIC – brad