ctx.load("classpath:app-context.xml");
ctx.refresh();
UsersService usersService = ctx.getBean("usersService", UsersService.class);
boolean success = usersService.changePassword(request.getParameter("un"), request.getParameter("pw"));
if (success) {
request.setAttribute("success", "Successfully changed password.");
String url = "/Login.jsp";
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(url);