QT 版本 5.4。
我正在尝试使用 QFtp 从特定目录下载所有文件。
有时信号命令 Done(int, bool) 发送得太早。
我使用信号 dataTransferProgress(qint64, qint64) 来检查我的下载进度。
当它工作时,我有一个输出,例如:
Download 1
dataTransferProgress 0/150
dataTransferProgress 150/150
commandFinished
Dowload 2
dataTransferProgress 0/250
dataTransferProgress 250/250
commandFinished
我的文件还可以
当它不起作用时,我有:
Download 1
dataTransferProgress 0/150
commandFinished
Dowload 2
150/150
0/250
commandFinished
文件 1 为空。文件 2 包含文件 1 的数据。
我的 FTP 对象
class ActionFTP : public QFtp
{
Q_OBJECT
public:
ParamConnexion parametres;
QString FTP_export="exportX3_OFT/";
QString FTP_import="exportOFT_X3/";
QString FTP_historique="historique/";
QString OFT_export;
QString OFT_import;
QString OFT_historique;
QString ficConfig;
QFile *file;
QSettings *settings;
ActionFTP(QObject *parent = 0, QString fichierConfig = "config.ini", int detail = 0);
~ActionFTP();
bool recupFichier_X3_OFT(const QString&); // Function to download the File
bool ftpestdeconnecte(); // Check if my ftp is deconnected
void connecter(); // Connect me to the FTP
void deconnecter(); // Disconnect me from the FTP
void ContenuRepertoireFTP(); // List all the files in the FTP directory
bool getCommandEnCours(){return commandEnCours;} // Check if a command is already running
QList<QUrlInfo> getListePrete(){return listeFichiers;} // Return if the list of the
bool commandEnCours;
private :
int idEnCours;
QList<QUrlInfo> listeFichiers;
private slots:
void slot_append(QString info); // Get some informations
void ftpCommandFinished(int id, bool err);
void ftpCommandStarted(int id);
void remplirList(QUrlInfo);
void ftpdatatransferprogress(qint64, qint64);
signals :
void signal_connexionFaite(bool); // Send when I'm connected
void signal_deconnexionFaite(bool); // Send when I'm disconnected
void signal_append(QString infos); // Send some informations
void signal_listePrete(bool); // List ready
void fintransfertfichierrecup(); // When the get command is finished.
};
#endif // ACTIONFTP_H
。.cpp
// I use a QSettings to get the different Path and the FTP Username/Login/Port/Host/TransferMode
ActionFTP::ActionFTP(QObject *parent, QString fichierConfig, int detail ) : QFtp(parent)
{
settings = new QSettings(fichierConfig, QSettings::IniFormat);
OFT_export=settings->value("Echange/DossierOFT").toString();
OFT_import=settings->value("Echange/DossierX3").toString();
OFT_historique=settings->value("Echange/DossierHistorique").toString();
connect(this, SIGNAL(signal_append(QString)),this,SLOT(slot_append(QString)));
connect(this, SIGNAL(commandFinished(int, bool)),this, SLOT(ftpCommandFinished(int, bool)));
connect(this,SIGNAL(commandStarted(int)), this, SLOT(ftpCommandStarted(int)));
connect(this, SIGNAL(listInfo(QUrlInfo)), this, SLOT(remplirList(QUrlInfo)));
connect(this, SIGNAL(dataTransferProgress(qint64,qint64)), this, SLOT(ftpdatatransferprogress(qint64, qint64)));
ficConfig=fichierConfig;
majParametres();
}
void ActionFTP::ftpdatatransferprogress(qint64 un, qint64 deux){
qDebug()<<un<<deux;
}
ActionFTP::~ActionFTP()
{
}
bool ActionFTP::recupFichier_X3_OFT(const QString &fichier){
if(commandEnCours){ // A command is already running
QString infos = "Une commande est déjà en cours.";
emit signal_append(infos);
}
else{
file = new QFile(OFT_import+fichier);
if(file->exists())file->remove();
QString infos = "Demande de r�cup�ration du fichier " + FTP_export+fichier;
emit signal_append(infos);
qDebug()<<"return de file->open "<<file->open(QIODevice::ReadWrite); // Always return TRUE
get(FTP_export+fichier, file, Binary); // Get command
}
return true;
}
void ActionFTP::slot_append(QString info){
qDebug()<<info;
}
bool ActionFTP::ftpestdeconnecte()
{
if (state()==QFtp::Unconnected)
return true;
return false;
}
void ActionFTP::connecter() {
setTransferMode((QFtp::TransferMode)parametres.TransfertMode);
if(!commandEnCours)
connectToHost(parametres.Hostname, parametres.Port);
else{
QString infos = "Une commande est déjà en cours.";
emit signal_append(infos);
}
}
void ActionFTP::deconnecter() {
if(commandEnCours){
QString infos = "Une commande est déjà en cours.";
emit signal_append(infos);
}
else{
close();
}
}
void ActionFTP::remplirList(QUrlInfo t){
listeFichiers.push_back(t);
}
void ActionFTP::ContenuRepertoireFTP(){ //Ask the list of files name in the directory
if(commandEnCours){
QString infos = "Une commande est déjà en cours.";
emit signal_append(infos);
}
else{
listeFichiers.clear();
list(FTP_export);
}
}
void ActionFTP::ftpCommandStarted(int id){
idEnCours = id;
commandEnCours=true;
qDebug()<<"dans commandStarted "<<id;
}
void ActionFTP::ftpCommandFinished(int id, bool err) {
qDebug()<<"dans ftpCommandFinished"<<id<<err;
QString infos;
if(err) {
infos = QString(" Erreur lors de la commande %i de type %i").arg(id, currentCommand());
erreurFTP(infos);
}
else {
infos += " OK";
}
emit signal_append(infos);
if(idEnCours==id){
QString infos;
switch(currentCommand()) {
case QFtp::None :
break;
case QFtp::SetTransferMode :
break;
case QFtp::SetProxy :
break;
case QFtp::ConnectToHost :
if(!err)
login(parametres.UserName, parametres.Password);
else
emit signal_connexionFaite(err);
break;
case QFtp::Login :
commandEnCours = false;
emit signal_connexionFaite(err);
break;
case QFtp::Close :
commandEnCours = false; // Signifier qu'il n'y a plus de transfert en cours
emit signal_deconnexionFaite(err);
break;
case QFtp::List :
commandEnCours=false;
emit signal_listePrete(err);
break;
case QFtp::Cd :
break;
case QFtp::Get :
file->close();
file = 0;
commandEnCours = false; // Signifier qu'il n'y a plus de transfert en cours
emit fintransfertfichierrecup();
qDebug()<<"signal get emit";
break;
case QFtp::Put :
commandEnCours = false; // Signifier qu'il n'y a plus de transfert en cours
emit fintransfertfichierenvoi();
break;
case QFtp::Remove :
commandEnCours = false;
emit fintransfertfichiersuppr();
break;
case QFtp::Mkdir :
break;
case QFtp::Rmdir :
break;
case QFtp::Rename :
break;
case QFtp::RawCommand :
break;
default :
infos = "Commande inconnue !!";
}
idEnCours = 0;
}
}
调用我的 FTP 对象的对象
class TacheEchanges : public QTimer
{
Q_OBJECT
public:
explicit TacheEchanges(QObject *parent = 0);
signals:
public slots:
private slots:
virtual void slot_check();
protected:
private:
ActionFTP *ftp; // My FTP object
QList<QUrlInfo> listDownload; // List of the files name
int indiceDownload; // Iterator
private slots:
void continuerDownload(); // When one file is downloaded
void connexionFaite(bool); // When I am connected to the FTP
void listePrete(bool); // When my command list is done
};
#endif // TACHEECHANGES_H
。.cpp
TacheEchanges::TacheEchanges(GestionBdD_Hizkia* bdd, QObject *parent)
: QTimer(parent)
{
settings =new QSettings(FICHIERCONFIG, QSettings::IniFormat);
try{
path_fichiersreference="";
path_poursage="";
path_historique="";
jobs = QList<Job>();
ftp = new ActionFTP(this, FICHIERCONFIG);
connect(this, SIGNAL(timeout()), this, SLOT(slot_check()));
connect(ftp,SIGNAL(fintransfertfichierenvoi()),this,SLOT(continuerUpload()));
connect(ftp, SIGNAL(signal_connexionFaite(bool)), this, SLOT(connexionFaite(bool)));
connect(ftp, SIGNAL(signal_listePrete(bool)), this, SLOT(listePrete(bool)));
//Differente path
path_fichiersreference =settings->value("Echange/DossierX3").toString();
path_historique =settings->value("Echange/DossierHistorique").toString();
path_poursage=settings->value("Echange/DossierOFT").toString();
indiceDownload=0;
}
catch(ErreurGeneriqueException &e) {
desc.message = "TacheEchangesn"+ e.what();
desc.niveau = NIVEAU_CRITIQUE;
InterfaceBdD::historiser(desc);
qDebug() << desc.message;
}
catch(...) {
// QDebug() << "TacheEchangesn" << e.get_message();
desc.message = "TacheEchanges ERREUR INCONNUE";
desc.niveau = NIVEAU_CRITIQUE;
InterfaceBdD::historiser(desc);
qDebug() << desc.message;
}
}
// If i am connected, i try to get the list of files name
void TacheEchanges::connexionFaite(bool err){
if(err)
throw new ErreurGeneriqueException("Impossible de se connecter");
else
ftp->ContenuRepertoireFTP();
}
void TacheEchanges::slot_check()
{
ftp->connecter();
}
// I take the list and start the download
void TacheEchanges::listePrete(bool err){
if(!err){
listDownload = ftp->getListePrete();
continuerDownload();
}
else{
throw new ErreurBasiqueException("Un problème est survenu lors de la récupération de la liste des fichiers présents sur le FTP.");
}
}
void TacheEchanges::continuerDownload(){
if(indiceDownload==listDownload.size()){
indiceDownload=0;
continuerSuppression();
return;
}
else{
ftp->recupFichier_X3_OFT(listDownload.at(indiceDownload).name());
indiceDownload++;
}
}
也可以在这里查看主动和被动之间的区别
好的
,当我尝试连接到我使用的FTP时
setTransferMode(QFtp::TransferMode);
我使用了默认值 QFtp::Active,如果我输入 QFtp::P assive,它可以工作。