您好我已经编写了一个简单的FTP代码将图像上传到FTP服务器。
现在的问题是commandStarted(int)
和commandFinished(int,bool)
信号永远不会被发出!!!
我从qftp.pro中获取了这个代码,它附带了Qt库,并在我的计算机上成功运行(这是一个gui程序)但是当我把这个ftp代码放在我的项目中,这是一个控制台项目它无法工作!!!
My.pro
QT += core network
QT -= gui
TARGET = FTP_PROJECT
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
CONFIG += link_pkgconfig
PKGCONFIG += opencv
SOURCES += main.cpp \
FTP_Class.cpp
HEADERS += \
FTP_Class.h \
Definitions.h
Main.cpp的
#include <QCoreApplication>
#include "FTP_Class.h"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
FTP_Class u;
return a.exec();
}
FTP_Class.cpp
#include "FTP_Class.h"
FTP_Class::FTP_Class(QObject *parent) :
QObject(parent)
{
ftp = new QFtp(this);
connect(ftp,SIGNAL(commandStarted(int)),this,SLOT(ftpStartedCommand(int)));
connect(ftp, SIGNAL(commandFinished(int,bool)),this, SLOT(ftpCommandFinished(int,bool)));
QUrl url("12.128.32.54");
//if (!url.isValid() || url.scheme().toLower() != QLatin1String("ftp"))
{
ftp->connectToHost("12.128.32.54", 21);
ftp->login("Hidden","[STr_9&65%Est@@]");
}
}
void FTP_Class::ftpStartedCommand(int id)
{
qDebug()<<"Command with ID "<<QString::number(id)<<" is started";
}
void FTP_Class::ftpCommandFinished(int, bool error)
{
if (ftp->currentCommand() == QFtp::ConnectToHost) {
if (error) {
qDebug()<< " Unable to connect to the FTP server Please check that the host name is correct";
ftp->abort();
ftp->deleteLater();
return;
}
}
if(ftp->currentCommand() == QFtp::Cd)
{
static bool enable = false;
if(enable)
{
QByteArray ImAgE = ReadImage(); //reads from external library
QString Final_Time = "Image.jpg";
ftp->put(ImAgE,Final_Time);
}
enable=true;
}
if(ftp->currentCommand() == QFtp::Mkdir)
{
qDebug()<<"Going to dest folder";
ftp->cd("Test");
}
if(ftp->currentCommand() == QFtp::Login)
{
ftp->cd("Image_Folder");
qDebug()<<"creating dest folder";
ftp->mkdir("Test");
}
if(ftp->currentCommand()== QFtp::Put)
{
if (error) {
qDebug()<<"Error in Uploading ...";
} else {
qDebug("Upload is completed ...");
}
}
return;
}
FTP_Class.h
#ifndef UPLOADER_H
#define UPLOADER_H
#include "Definitions.h"
class FTP_Class: public QObject
{
Q_OBJECT
public:
explicit FTP_Class(QObject *parent = 0);
QFtp *ftp;
public slots:
void ftpCommandFinished(int,bool);
void ftpStartedCommand(int id);
private:
};
#endif // UPLOADER_H
我可以使用qt示例项目连接到我的ftp服务器,也可以连接到FTP客户端软件Filezilla,因此IP和用户名和密码都可以。 (出于安全考虑,我在这里更改了用户名和密码+ IP)
我的问题是什么?
答案 0 :(得分:0)
Using QFtp in a console app。你确定你的程序不起作用(因为它是异步工作的)吗?此外,QT api参考建议您应该使用QNetworkAccessManager和QNetworkReply。请参阅:http://qt-project.org/doc/qt-4.8/qftp.html#details