Question

我制作了一个应用程序，可以从Open API下载数据并将其编译为格式化的.XLSX文件。然后，我需要将此文件上传到使用用户名和密码的本地FTP服务器上。我尝试使用一个开放源代码示例将其上传到FTP，它可以完美运行。但是，将其转移到我自己的应用程序中时，它将失败。如何成功通过FTP传输数据？我下面有我的代码段，因为它们实际上是相同的。

示例Cpp：

#include "widget.h"
#include "ui_widget.h"

#include <QFileDialog>
#include <QUrl>
#include <QDebug>

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    m_manager = new QNetworkAccessManager(this);
    connect(m_manager, &QNetworkAccessManager::finished, this, &Widget::uploadFinished);
}

Widget::~Widget()
{
    delete ui;
}

void Widget::on_selectFileButton_clicked()
{
    m_fileName = QFileDialog::getOpenFileName(this, "Get Any File");
    ui->fileNameLineEdit->setText(m_fileName);
}

void Widget::on_uploadButton_clicked()
{
    m_file = new QFile(m_fileName);

    QFileInfo fileInfo(*m_file);
    QUrl url(ui->uploadUrlLineEdit->text() + fileInfo.fileName());
    url.setUserName("BoardmanOH");
    url.setPassword("_4WMAe,^Mo=jYt6mYw@iz7Ri");
    url.setPort(21);

    if (m_file->open(QIODevice::ReadOnly))
    {
        QNetworkReply *reply = m_manager->put(QNetworkRequest(url), m_file);
        connect(reply, &QNetworkReply::uploadProgress, this, &Widget::uploadProgress);
    }

}

void Widget::uploadFinished(QNetworkReply *reply)
{
    if (!reply->error())
    {
        m_file->close();
        m_file->deleteLater();
        reply->deleteLater();
    }
}

void Widget::uploadProgress(qint64 bytesSent, qint64 bytesTotal)
{
    ui->progressBar->setValue(100 * bytesSent/bytesTotal);
}

示例头文件：

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QString>
#include <QFile>

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

private slots:
    void on_selectFileButton_clicked();
    void on_uploadButton_clicked();
    void uploadFinished(QNetworkReply *reply);
    void uploadProgress(qint64 bytesSent, qint64 bytesTotal);

private:
    Ui::Widget *ui;
    QNetworkAccessManager *m_manager;
    QString m_fileName;
    QFile *m_file;
};

#endif // WIDGET_H

我的CPP文件：

#include "ftpuploader.h"

FTPUploader::FTPUploader(QString filename)
{
    m_fileName = filename;

    m_manager = new QNetworkAccessManager(this);
    connect(m_manager, &QNetworkAccessManager::finished, this, &FTPUploader::uploadFinished);
}

void FTPUploader::start()
{
    m_file = new QFile(m_fileName);

    QFileInfo fileInfo(*m_file);
    QUrl url("ftp://********.com/" + fileInfo.fileName());
    url.setUserName("*******");
    url.setPassword("*********");
    url.setPort(21);

    if (m_file->open(QIODevice::ReadOnly))
    {
        QNetworkReply *reply = m_manager->put(QNetworkRequest(url), m_file);
        connect(reply, &QNetworkReply::uploadProgress, this, &FTPUploader::uploadProgress);
    }
}

void FTPUploader::uploadProgress(qint64 bytesSent, qint64 bytesTotal)
{
    qDebug() << "Uploaded: " << bytesSent << "of" << bytesTotal;
    //ui->progressBar->setValue(100 * bytesSent/bytesTotal);
}

void FTPUploader::uploadFinished(QNetworkReply *reply)
{
    if (!reply->error())
    {
        m_file->close();
        m_file->deleteLater();
        reply->deleteLater();
    }
}

我的头文件：

#ifndef FTPUPLOADER
#define FTPUPLOADER

#include <QtCore>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QDebug>

class FTPUploader: public QObject
{
    Q_OBJECT
public:
    explicit FTPUploader(QString filename = nullptr);

    void start();

private slots:
    void uploadFinished(QNetworkReply *reply);
    void uploadProgress(qint64 bytesSent, qint64 bytesTotal);

private:
    QNetworkAccessManager *m_manager;
    QString m_fileName;
    QFile *m_file;
};

#endif

我发现这些文件实际上在功能上是相同的，但是它们根本无法按预期运行。感谢您提供的任何帮助或评论！

QT FTP上传到带有证书的服务器

0 个答案: