final String pass = req.getParameter("password");
JndiConnectionProvider con = new JndiConnectionProvider(jndi, user, pass);
try
{
final Connection connection = con.createConnection(null, null);
connection.close();
resp.setContentType("text/plain");
resp.setStatus(HttpServletResponse.SC_OK);
final PrintWriter writer = resp.getWriter();
writer.print("Success.");