Qt之QNetworkAccessManager 实现FTP文件上传/下载功能

#include "MyFtpManager.h" #include <QFile> #include <QNetworkRequest> MyFtpManager::MyFtpManager(QObject *parent) : QObject(parent) { // 设置协议 url.setScheme("ftp"); } QNetworkReply *MyFtpManager::put(const QString &localPath, const QString &uploadPath) { // 文件是否可以打开 QFile file(localPath); if (!file.open(QIODevice::ReadOnly)) return NULL; // 设置上传路径 url.setPath(uploadPath); QNetworkReply *pReply = manager.put(QNetworkRequest(url), file.readAll()); connect(pReply, SIGNAL(finished()), SLOT(uploadFinished())); connect(pReply, SIGNAL(error(QNetworkReply::NetworkError)), SLOT(error(QNetworkReply::NetworkError))); return pReply; } QNetworkReply *MyFtpManager::get(const QString &downloadPath, const QString &localPath) { // 记录要保存的位置 path = localPath; // 设置下载路径 url.setPath(downloadPath); QNetworkReply *pReply = manager.get(QNetworkRequest(url)); connect(pReply, SIGNAL(finished()), SLOT(downloadFinished())); connect(pReply, SIGNAL(error(QNetworkReply::NetworkError)), SLOT(error(QNetworkReply::NetworkError))); return pReply; } void MyFtpManager::uploadFinished() { } void MyFtpManager::downloadFinished() { QNetworkReply *pReply = qobject_cast<QNetworkReply *>(sender()); if (pReply == NULL) return; // 如果有错误就不需要保存 if (pReply->error() != QNetworkReply::NoError) return; // 写入文件 QFile file(path); if (!file.open(QIODevice::WriteOnly)) return; file.write(pReply->readAll()); file.flush(); file.close(); } void MyFtpManager::error(QNetworkReply::NetworkError error) { qDebug() << error; }