जेस्च का उपयोग करके फ़ाइल अपलोड करने के लिए एक उदाहरण यहां दिया गया है :
ScpUploader.java:
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;
import java.io.ByteArrayInputStream;
import java.util.Properties;
public final class ScpUploader
{
public static ScpUploader newInstance()
{
return new ScpUploader();
}
private volatile Session session;
private volatile ChannelSftp channel;
private ScpUploader(){}
public synchronized void connect(String host, int port, String username, String password) throws JSchException
{
JSch jsch = new JSch();
Properties config = new Properties();
config.put("StrictHostKeyChecking", "no");
session = jsch.getSession(username, host, port);
session.setPassword(password);
session.setConfig(config);
session.setInputStream(System.in);
session.connect();
channel = (ChannelSftp) session.openChannel("sftp");
channel.connect();
}
public synchronized void uploadFile(String directoryPath, String fileName, byte[] fileBytes, boolean overwrite) throws SftpException
{
if(session == null || channel == null)
{
System.err.println("No open session!");
return;
}
channel.cd("/");
String[] directories = directoryPath.split("/");
for(String directory : directories)
{
if(directory.length() > 0)
{
try
{
channel.cd(directory);
}
catch(SftpException e)
{
System.out.println("The directory (" + directory + ") seems to be not exist. We will try to create it.");
try
{
channel.mkdir(directory);
channel.cd(directory);
System.out.println("The directory (" + directory + ") is created successfully!");
}
catch(SftpException e1)
{
System.err.println("The directory (" + directory + ") is failed to be created!");
e1.printStackTrace();
return;
}
}
}
}
channel.put(new ByteArrayInputStream(fileBytes), directoryPath + "/" + fileName, overwrite ? ChannelSftp.OVERWRITE : ChannelSftp.RESUME);
}
public synchronized void disconnect()
{
if(session == null || channel == null)
{
System.err.println("No open session!");
return;
}
channel.exit();
channel.disconnect();
session.disconnect();
channel = null;
session = null;
}
}
AppEntryPoint.java:
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.SftpException;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
public final class AppEntryPoint
{
private static final String HOST = "192.168.1.1";
private static final int PORT = 22;
private static final String USERNAME = "root";
private static final String PASSWORD = "root";
public static void main(String[] args) throws IOException
{
ScpUploader scpUploader = ScpUploader.newInstance();
try
{
scpUploader.connect(HOST, PORT, USERNAME, PASSWORD);
}
catch(JSchException e)
{
System.err.println("Failed to connect the server!");
e.printStackTrace();
return;
}
System.out.println("Successfully connected to the server!");
byte[] fileBytes = Files.readAllBytes(Paths.get("C:/file.zip"));
try
{
scpUploader.uploadFile("/test/files", "file.zip", fileBytes, true);
System.out.println("Successfully uploaded the file!");
}
catch(SftpException e)
{
System.err.println("Failed to upload the file!");
e.printStackTrace();
}
scpUploader.disconnect();
}
}