private Connection getMySQLSSHConnection() {
Connection connection = null;
//
int assigned_port;
final int local_port = 3309;
// Remote host and port
final int remote_port = 3306;
final String remote_host = "remote.host.com";
try {
JSch jsch = new JSch();
// Create SSH session. Port 22 is your SSH port which
// is open in your firewall setup.
System.out.println("DEBUG: get session");
Session session = jsch.getSession("user", remote_host, 22);
System.out.println("DEBUG: set password");
session.setPassword("password");
// Additional SSH options. See your ssh_config manual for
// more options. Set options according to your requirements.
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
config.put("Compression", "yes");
config.put("ConnectionAttempts", "2");
System.out.println("DEBUG: set configuration");
session.setConfig(config);
// Connect
System.out.println("DEBUG: SSH connect");
session.connect();
// Create the tunnel through port forwarding.
// This is basically instructing jsch session to send
// data received from local_port in the local machine to
// remote_port of the remote_host
// assigned_port is the port assigned by jsch for use,
// it may not always be the same as
// local_port.
System.out.println("DEBUG: get assigned port");
assigned_port = session.setPortForwardingL(local_port, remote_host, remote_port);
} catch (JSchException e) {
System.out.println("DEBUG: SSH exception: fail");
e.printStackTrace();
return null;
}
if (assigned_port == 0) {
System.out.println("Port forwarding failed !");
return null;
}
// Database access credintials. Make sure this user has
// "connect" access to this database;
// these may be initialized somewhere else in your code.
final String database_user = "******";
final String database_password = "******";
final String database = "db_name";
// Build the database connection URL.
StringBuilder url = new StringBuilder("jdbc:mysql://localhost:");
// use assigned_port to establish database connection
url.append(assigned_port)
.append("/")
.append(database)
.append("?user="******"&password="******"DEBUG: load mysql driver");
Class.forName("com.mysql.jdbc.Driver").newInstance();
System.out.println("DEBUG: get connection");
connection = DriverManager.getConnection(url.toString());
} catch (Exception e) {
System.out.println("DEBUG get connection failed");
e.printStackTrace();
}
return connection;
}
