static void downloadFileByName(String filename) {
try {
System.out.println("Downloading file : " + filename);
int mode = ChannelSftp.OVERWRITE;
sftpChannel.get(filename, localDirectory, null, mode);
downloadedFileCount++;
System.out.println("Download Completed.");
// file moving to processed folder
moveFileToProcessedFolder(filename);
} catch (SftpException e) {
System.out.println("Exception in downloadFileByName(" + filename + "): " + e.toString());
errorMessage += "Exception in downloadFileByName(" + filename + "): " + e.toString() + "\n";
} catch (Exception e) {
System.out.println("Exception in downloadFileByName(" + filename + "): " + e.toString());
errorMessage += "Exception in downloadFileByName(" + filename + "): " + e.toString() + "\n";
}
}
public String downloadFile(
String host,
int port,
String username,
String password,
String filePath,
String fileFormat,
String fileType) {
Session session = null;
Channel channel = null;
String homeDirectory = System.getProperty("user.home");
String localDownloadRootDir = homeDirectory + File.separatorChar + host;
String localDownloadDir = localDownloadRootDir + File.separatorChar + fileType;
try {
JSch jsch = new JSch();
session = jsch.getSession(username, host, port);
session.setPassword(password);
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
session.setConfig(config);
session.connect();
System.out.println("Host connected.");
channel = session.openChannel("sftp");
channel.connect();
} catch (JSchException e) {
System.out.println("Could not connect: " + e.toString());
}
if (channel.isConnected()) {
int grabCount = 0;
try {
ChannelSftp c = (ChannelSftp) channel;
c.cd(filePath);
File rootPath = new File(localDownloadRootDir);
File downloadPath = new File(localDownloadDir);
if (!rootPath.exists()) {
rootPath.mkdir();
}
if (!downloadPath.exists()) {
downloadPath.mkdir();
}
c.lcd(localDownloadDir);
System.out.println("lcd " + c.lpwd());
// Get a listing of the remote directory
@SuppressWarnings("unchecked")
Vector<ChannelSftp.LsEntry> list = c.ls(".");
// iterate through objects in list, identifying specific file names
for (ChannelSftp.LsEntry oListItem : list) {
// output each item from directory listing for logs
if (oListItem.getFilename().contains(fileFormat)) {
System.out.println(oListItem.toString());
// If it is a file (not a directory)
if (!oListItem.getAttrs().isDir()) {
// Grab the remote file ([remote filename], [local path/filename to write file to])
System.out.println("get " + oListItem.getFilename());
c.get(
oListItem.getFilename(),
oListItem
.getFilename()); // while testing, disable this or all of your test files will
// be grabbed
grabCount++;
// Delete remote file
if (!fileFormat.equalsIgnoreCase(".der")) {
c.rm(
oListItem
.getFilename()); // Note for SFTP grabs from this remote host, deleting the
// file is unnecessary,
// as their system automatically moves an item to the 'downloaded' subfolder
// after it has been grabbed. For other target hosts, un comment this line to
// remove any downloaded files from the inbox.
}
}
}
}
// Report files grabbed to log
if (grabCount == 0) {
System.out.println("Found no new files to grab.");
} else {
System.out.println("Retrieved " + grabCount + " new files.");
}
} catch (SftpException e) {
System.out.println(e.toString());
} finally {
// disconnect session. If this is not done, the job will hang and leave log files locked
session.disconnect();
System.out.println("Session Closed");
}
}
return localDownloadDir;
}
