This address of ModelAndView of Spring mvc does not exist at all. Why can it still be opened normally?

  java, question

@RequestMapping(value = “/add”, method = RequestMethod.POST)

public ModelAndView add(HttpServletRequest request,
 HttpServletResponse response, zqbp_custom item) {
 ConnectionSource connectionSource = DBUtil.getConnectionSource();
 try {
 String []a=item.getCustom_address().split(",");
 String aa="";
 for(int i=0;  i<a.length;  I plus)
 if(Integer.parseInt(a[i])!  =-1){
 if(a[i]!  =null){
 if(i!  =4){
 Dao<t_prov_city_area_street, String> dao = DaoManager.createDao(connectionSource,
 t_prov_city_area_street.class);
 t_prov_city_area_street t=dao.queryForId(a[i]);
 
 Aa plus =t.getName ();
 }else{
 Aa plus =a[i];
 bracket
 bracket
 bracket
 bracket
 Dao<zqbp_custom, String> dao = DaoManager.createDao(connectionSource,
 zqbp_custom.class);
 item.setCustom_id((UUID.randomUUID().toString().replaceAll("-", "")));
 item.setStatus("0");
 item.setCustom_address(aa);
 
 item.setCustom_trade("3");
 dao.create(item);
 connectionSource.close();
 } catch (SQLException e) {
 Return jsonError(request, "save failed!  !"  , "");
 bracket
 Return jsonSuccess(request, "saved successfully!"  , getBasePath(request)
  • “admin/custom/index.html”);

    bracket

    《《《《《《《《《《《《《《《《《《《《《《《《《《《《《《
    The correct address for ModelAndView should be admin/Custom/Index.jsp “
    It is definitely not a caching problem

The final. html is the same as jsp