QT5 实现FTP服务器简单交互

#include "ftpget.h" FtpManager::FtpManager(QObject *parent) : QObject(parent) { //设置协议 m_url.setScheme("ftp"); } // 设置地址和端口 void FtpManager::setHostPort(const QString &host, int port) { m_url.setHost(host); m_url.setPort(port); } // 设置登录 FTP 服务器的用户名和密码 void FtpManager::setUserInfo(const QString &userName, const QString &password) { m_url.setUserName(userName); m_url.setPassword(password); } // 上传文件 void FtpManager::put(const QString &fileName, const QString &path) { QFile file(fileName); // file.open(QIODevice::ReadOnly); // QByteArray data = file.readAll(); //据说当文件size大于1G时使用Read方法会失效 QFile *data = new QFile(fileName); if (data->open(QIODevice::ReadOnly)) { m_url.setPath(path); QNetworkReply *pReply = m_manager.put(QNetworkRequest(m_url), data); connect(pReply, SIGNAL(uploadProgress(qint64, qint64)), this, SLOT(uploadProgress(qint64, qint64))); connect(pReply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(error(QNetworkReply::NetworkError))); } else { // } } // 下载文件 void FtpManager::get(const QString &path, const QString &fileName) { QFileInfo info; info.setFile(fileName); m_file.setFileName(fileName); m_file.open(QIODevice::WriteOnly | QIODevice::Append); m_url.setPath(path); QNetworkReply *pReply = m_manager.get(QNetworkRequest(m_url)); connect(pReply, SIGNAL(finished()), this, SLOT(finished())); connect(pReply, SIGNAL(downloadProgress(qint64, qint64)), this, SLOT(downloadProgress(qint64, qint64))); connect(pReply, SIGNAL(error(QNetworkReply::NetworkError)), this, SLOT(error(QNetworkReply::NetworkError))); } // 下载过程中写文件 void FtpManager::finished() { QNetworkReply *pReply = qobject_cast<QNetworkReply *>(sender()); switch (pReply->error()) { case QNetworkReply::NoError : { m_file.write(pReply->readAll()); m_file.flush(); } break; default: break; } m_file.close(); pReply->deleteLater(); } void FtpManager::uploadProgress(qint64 bytesSent, qint64 bytesTotal) { printf("Total size = %d@@@ Sent size = %d\n", bytesTotal, bytesSent); } void FtpManager::downloadProgress(qint64 bytesReceived, qint64 bytesTotal) { printf("Total size = %d@@@ Received size = %d\n", bytesTotal, bytesReceived); } void FtpManager::error(QNetworkReply::NetworkError error) { printf("error! last error = %d", error); }