@RequestMapping("/loadClient")
 @ResponseBody
 public JSONObject loadClient(HttpServletRequest request) {
   final String clientId = request.getParameter("clientId").substring(1);
   final JsonClient simpleClient = clientService.getClientSimpleInfo(Long.valueOf(clientId));
   request.getSession().setAttribute("oldLevel", simpleClient.getLevel());
   return JSONObject.fromObject(simpleClient);
 }
 @RequestMapping("/addPage")
 public String addPage(HttpServletRequest request) {
   SessionInfo sessionInfo =
       (SessionInfo) request.getSession().getAttribute(GlobalConstant.SESSION_INFO);
   if (sessionInfo.getRoleNames().equals("client")) {
     JsonClient client = clientService.getClientSimpleInfo(sessionInfo.getId());
     request.setAttribute("client", client);
     request.getSession().setAttribute("oldLevel", client.getLevel());
   }
   return "/oil/sellAdd";
 }