Using JSch, is there a way to tell if a remote file exists without doing an ls and looping through the files to find a name match?
Thanks
Using JSch, is there a way to tell if a remote file exists without doing an ls and looping through the files to find a name match?
Thanks
This is how I check directory existence in JSch.
Note: not related to this question, but some may find it useful.
Create directory if dir does not exist
ChannelSftp channelSftp = (ChannelSftp)channel;
String currentDirectory=channelSftp.pwd();
String dir="abc";
SftpATTRS attrs=null;
try {
attrs = channelSftp.stat(currentDirectory+"/"+dir);
} catch (Exception e) {
System.out.println(currentDirectory+"/"+dir+" not found");
}
if (attrs != null) {
System.out.println("Directory exists IsDir="+attrs.isDir());
} else {
System.out.println("Creating dir "+dir);
channelSftp.mkdir(dir);
}
import java.util.ArrayList;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelExec;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
public class FileExists {
ChannelExec channelExec = null;
static Channel channel = null;
static String host = "hostname";
static String user = "username";
static String password = "password$";
public static void main(String[] args) {
String filename = "abc.txt";
String filepath = "/home/toolinst/ggourav";
try {
Channel channel = getChannelSftp(host, user, password);
channel.connect();
ChannelSftp channelSftp = (ChannelSftp) channel;
channelSftp.cd(filepath);
String path = channelSftp.ls(filename).toString();
if (!path.contains(filename)) {
System.out.println("File doesn't exist.");
} else
System.out.println("File already exist.");
} catch (Exception e) {
e.printStackTrace();
}
}
private static Channel getChannelSftp(String host, String user, String password) {
try {
JSch jsch = new JSch();
Session session = jsch.getSession(user, host, 22);
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
config.put("PreferredAuthentications", "publickey,keyboard-interactive,password");
session.setConfig(config);
session.setPassword(password);
session.connect();
channel = session.openChannel("sftp");
} catch (Exception e) {
System.out.println("Failed to get sftp channel. " + e);
}
return channel;
}
}