Qt: ftp uploading file permission denied
时间: 2023-12-09 18:05:30 浏览: 49
这个问题可能是由于文件上传时,FTP服务器没有足够的权限来写入文件。你可以尝试以下几个解决方案:
1. 检查目标文件夹的权限是否正确设置。确保FTP用户具有写入权限。
2. 确认文件名是否正确。如果文件名被其他进程占用或文件正在被占用,文件上传可能失败。
3. 试着在FTP客户端中使用"sudo"或管理员权限来上传文件。
4. 如果以上解决方案都没有解决问题,可能需要检查FTP服务器的日志以获取更多信息,或者联系FTP服务器管理员以获得帮助。
相关问题
Qt 实现ftp工具类,Qt C++代码
以下是一个简单的Qt实现FTP工具类的代码示例:
FTPManager.h 文件:
```cpp
#ifndef FTPMANAGER_H
#define FTPMANAGER_H
#include <QObject>
#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkReply>
#include <QUrl>
#include <QFile>
#include <QFileInfo>
class FTPManager : public QObject
{
Q_OBJECT
public:
explicit FTPManager(QObject *parent = nullptr);
void uploadFile(const QString &filePath, const QUrl &url, const QString &userName, const QString &password);
void downloadFile(const QUrl &url, const QString &userName, const QString &password);
private slots:
void uploadProgress(qint64 bytesSent, qint64 bytesTotal);
void downloadProgress(qint64 bytesReceived, qint64 bytesTotal);
void finished(QNetworkReply *reply);
private:
QNetworkAccessManager *m_manager;
QFile *m_file;
};
#endif // FTPMANAGER_H
```
FTPManager.cpp 文件:
```cpp
#include "FTPManager.h"
FTPManager::FTPManager(QObject *parent) : QObject(parent)
{
m_manager = new QNetworkAccessManager(this);
}
void FTPManager::uploadFile(const QString &filePath, const QUrl &url, const QString &userName, const QString &password)
{
m_file = new QFile(filePath);
if (!m_file->exists()) {
qDebug() << "File not found!";
return;
}
m_file->open(QIODevice::ReadOnly);
QNetworkRequest request(url);
request.setUserName(userName);
request.setPassword(password);
QNetworkReply *reply = m_manager->put(request, m_file);
connect(reply, SIGNAL(uploadProgress(qint64,qint64)), this, SLOT(uploadProgress(qint64,qint64)));
connect(reply, SIGNAL(finished()), this, SLOT(finished()));
}
void FTPManager::downloadFile(const QUrl &url, const QString &userName, const QString &password)
{
QNetworkRequest request(url);
request.setUserName(userName);
request.setPassword(password);
QNetworkReply *reply = m_manager->get(request);
connect(reply, SIGNAL(downloadProgress(qint64,qint64)), this, SLOT(downloadProgress(qint64,qint64)));
connect(reply, SIGNAL(finished()), this, SLOT(finished()));
}
void FTPManager::uploadProgress(qint64 bytesSent, qint64 bytesTotal)
{
qDebug() << "Uploading file" << m_file->fileName() << "Progress:" << bytesSent << "/" << bytesTotal;
}
void FTPManager::downloadProgress(qint64 bytesReceived, qint64 bytesTotal)
{
qDebug() << "Downloading file Progress:" << bytesReceived << "/" << bytesTotal;
}
void FTPManager::finished(QNetworkReply *reply)
{
if (reply->error()) {
qDebug() << "Error:" << reply->errorString();
}
else {
qDebug() << "Finished!";
}
reply->deleteLater();
m_file->close();
}
```
使用示例:
```cpp
FTPManager ftpManager;
QUrl url("ftp://example.com/upload/file.txt");
QString userName = "username";
QString password = "password";
QString filePath = "/path/to/local/file.txt";
ftpManager.uploadFile(filePath, url, userName, password);
// 或者下载文件
// ftpManager.downloadFile(url, userName, password);
```
这个示例实现了FTP文件上传和下载功能,并且可以在控制台中输出上传和下载的进度。您可以根据需要进行更改和完善。
MsTimer2.h: No such file or directory
This error usually occurs when the compiler cannot find the `MsTimer2.h` header file.
To fix this error, you can try the following steps:
1. Make sure that you have installed the MsTimer2 library correctly. You can download the library from the Arduino Library Manager or from the GitHub repository.
2. Check if the library is included in your Arduino IDE. In the Arduino IDE, go to Sketch > Include Library > MsTimer2. If the library is not listed, you need to install it.
3. Check if the library is included in your sketch. In your sketch, make sure that you have included the `MsTimer2.h` header file at the beginning of your code, like this:
```
#include <MsTimer2.h>
```
4. Make sure that your Arduino board is selected correctly in the Tools > Board menu.
5. If the above steps do not work, try restarting the Arduino IDE and uploading the sketch again.
I hope this helps you to fix the error!