Qt QNetworkAccessManager::put-QIODevice::read:将文件发送到ftp服务器后设备未打开
当我将文件发送到ftp服务器时,收到消息QIODevice::read:设备未打开(发送此文件后…) 输出如下所示: 上传1673/1673 QIODevice::读取:设备未打开 完成0Qt QNetworkAccessManager::put-QIODevice::read:将文件发送到ftp服务器后设备未打开,qt,qnetworkaccessmanager,Qt,Qnetworkaccessmanager,当我将文件发送到ftp服务器时,收到消息QIODevice::read:设备未打开(发送此文件后…) 输出如下所示: 上传1673/1673 QIODevice::读取:设备未打开 完成0 #包括“uploader.h” Uploader::Uploader(QObject*父对象): QObject(父对象) { } void Uploader::start(常量QString和文件名){ QUrl url(“ftp://adresIP/test/tt.txt"); url.setUserNa
#包括“uploader.h”
Uploader::Uploader(QObject*父对象):
QObject(父对象)
{
}
void Uploader::start(常量QString和文件名){
QUrl url(“ftp://adresIP/test/tt.txt");
url.setUserName(“ftp@domena.pl");
url.setPassword(“passwd”);
文件=新的QFile(文件名);
QByteArray数据;
文件->打开(QIODevice::ReadOnly);
append(文件->readAll());
//--其他尝试
文件->刷新();
文件->关闭();
删除文件;
//--
reply=nam.put(QNetworkRequest(url),putData);
连接(应答,信号(上传进度(qint64,qint64)),此,插槽(上传进度(qint64,qint64));
连接(应答,信号(finished()),此,插槽(uploadDone());
}
void Uploader::uploadProgress(qint64 bytesSent,qint64 bytesTotal){
qDebug()我认为这是一个qt问题。在ftp使用qt 5.3 win vs2010上传后,我收到了相同的警告。安装5.5后,消息消失。可能重复,但我可以将数据上传到服务器。我不知道为什么我总是收到消息“QIODevice::read:device not open”,尽管文件上传成功;屏幕:
#include "uploader.h"
Uploader::Uploader(QObject *parent) :
QObject(parent)
{
}
void Uploader::start(const QString &fileName) {
QUrl url("ftp://adresIP/test/tt.txt");
url.setUserName("ftp@domena.pl");
url.setPassword("passwd");
file = new QFile(fileName);
QByteArray putData;
file->open(QIODevice::ReadOnly);
putData.append(file->readAll());
//-- other attempts
file->flush();
file->close();
delete file;
//--
reply = nam.put(QNetworkRequest(url), putData);
connect(reply, SIGNAL(uploadProgress(qint64, qint64)), this, SLOT(uploadProgress(qint64, qint64)));
connect(reply, SIGNAL(finished()), this, SLOT(uploadDone()));
}
void Uploader::uploadProgress(qint64 bytesSent, qint64 bytesTotal) {
qDebug() << "Uploaded" << bytesSent << "of" << bytesTotal;
}
void Uploader::uploadDone() {
qDebug() << "Finished" << reply->error();
reply->deleteLater();
}
//uploader.h
QNetworkAccessManager nam;
QFile *file;
QNetworkReply *reply;
//main.cpp
Uploader u;
u.start("F:\\song.mp3");