@Override
    protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws Exception {
        Project formProject = (Project) command;
        String previousPage = (String) request.getSession(true).getAttribute("previous_page");
        if (previousPage != null) {
            setSuccessView("redirect:" + previousPage);
        } else {
            setSuccessView("redirect:main.htm?action=release");
        }
        if (request.getParameter("save_action") != null) {
            String action = request.getParameter("action");
            System.out.println("action: " + action);
            if ("new".equals(action)) {
                formProject.setCreateTime(new Date());
                formProject.setCreateUser("");
                formProject.setUpdateTime(new Date());
                formProject.setUpdateUser("");
                projectDao.save(formProject);
            } else {
                projectDao.update(formProject);
            }
        } else if (request.getParameter("cancel_action") != null) {
            //cancel
        }
        return super.onSubmit(request, response, command, errors);
    }