protected void processRequest(HttpServletRequest req, HttpServletResponse rep)
    throws ServletException, IOException {
//          rep.setContentType("application/json;charset=UTF-8");
            String cmd = req.getParameter("cmd");
            String path = "maintinfoAngularJS/WEB-INF/index.html";

            rep.setContentType("application/json;charset=UTF-8");

            BeanArticle a = new BeanArticle();
            Gson gson = new Gson();
            Type type = new TypeToken<List<Article>>() {}.getType();
            String json = gson.toJson(a.findArticle(), type);
            rep.setContentType("application/json");
            rep.getWriter().write(json);