问题
I'm new to Qt and I would like to implement FTP and SFTP support for my software. As I googled I discovered that there doesn't exist a sftp library for Qt but it should be possible with QNetworkAccessManager. I tried then to discover on how to build a custom protocol or something like that but didn't figure out how to do it.
Does someone know how I could do that?
Thanks, Michael
回答1:
There is no support for SFTP in Qt SDK but Qt Creator implements SFTP.
I have isolated the library that contains SSH and SFTP and I have created a new project named QSsh in Github. The aim of the project is to provide SSH and SFTP support for any Qt Application.
I have written an example on how to upload a file using SFTP. Take a look at examples/SecureUploader/
I hope it might be helpful
回答2:
You need a custom implementation for each protocol. But we can create a class like QHttp which will do that. There are several protocols that has similar semantic, but not all. So, if you want write it, tell me and I help you.
回答3:
There's no current SSH wrapper implementation in the Qt SDK. You have 3 choices here:
- Roll your own custom SSH/SFTP client implementation using the IETF RFC and standard drafts like RFC4253. This might not be what you're looking for.
- Use any of the ssh implementation libraries like openssh/libssh directly or writing your own Qt/C++ wrapper for future-reuse. Any reasonably decent project with ssh needs usually links to a an already established ssh library and uses it programatically. Like Qt Creator does, if you dig inside it long enough you'll find what user Paglian mentioned earlier. Relying on a library is less risky and more future-proof then rolling your own.
- Use openssh tooling at the command line interface directly, using QProcess just like you'd use it at the shell. This is is the fastest method if you're working on a proof-of-concept project and don't need any complex ftp operations, as it might get a bit difficult to devise a robust wrapper around the CLI tooling.
来源：https://stackoverflow.com/questions/6758121/howto-implement-sftp-with-qt-qnetworkaccessmanager-c