Re: [JSch-users] SftpATTRS.exists() and Exception handling.

[<ym...@jc...>]

Hi,

   +-From: "Jochen boutens" <j_g...@ho...> --
   |_Date: Wed, 21 Feb 2007 13:09:51 +0000 ______________
   |
   |What is the best way to check if a file exists on an SFTP server?
   |I'm using the libs to synchronize files and I need to check weather or not 
   |the remote file exists.
   |Am I supposed to lsstat(path) the file/dir? And an exception will be 
   |returned if the object doesn't exist?

The sftp protocol[1] has defined SSH_FXP_STAT and SSH_FXP_LSTAT,
and jsch has defined "stat(path)" and "lstat(path)". As you have expected,
they will throw an exception if they can not get the stat info.
# stat(path) will follow symbolic links on the server, but lstat(path)
# will not.

   |My second question is about the development of the libraries. The libs 
   |currently only throw one exception. 

That exception has included error-code, which is from sftp-server and defined
in sftp protocol[1] at "9.1 Status Response".

[1] http://tools.ietf.org/id/draft-ietf-secsh-filexfer-13.txt


Sincerely,
--
Atsuhiko Yamanaka
JCraft,Inc.
1-14-20 HONCHO AOBA-KU,
SENDAI, MIYAGI 980-0014 Japan.
Tel +81-22-723-2150
    +1-415-578-3454
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Skype callto://jcraft/