关于程序跳转的问题

CatalogController类中的add（）方法和remove（）方法最后都是跳转到“list.do”，难道这个跳转不需要经过GlobalController核心控制类吗？如果经过此核心控制类，这种写法又如何能提取到正确的类名和方法名呢？请老师解释一下。

public class CatalogController {
   private CatalogBiz catalogBiz = new CatalogBizImpl();

   //  /admin/Catalog/list.do
   public void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
       Catalog root = catalogBiz.getRoot();
       request.setAttribute("root", root);
       request.getRequestDispatcher("/WEB-INF/pages/admin/catalog_list.jsp").forward(request, response);
   }

   //  /admin/Catalog/toAdd.do
   public void toAdd(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
       Catalog root = catalogBiz.getRoot();
       request.setAttribute("root", root);
       request.getRequestDispatcher("/WEB-INF/pages/admin/catalog_add.jsp").forward(request, response);
   }

   //  /admin/Catalog/add.do
   public void add(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
       String[] titles = request.getParameterValues("title");
       String[] pids = request.getParameterValues("pid");
       String[] infos = request.getParameterValues("info");
       List<Catalog> list = new ArrayList<Catalog>();
       for (int i = 0; i < titles.length; i++) {
           Catalog catalog = new Catalog();
           catalog.setTitle(titles[i]);
           catalog.setPid(Integer.parseInt(pids[i]));
           catalog.setInfo(infos[i]);
           list.add(catalog);
       }
       catalogBiz.add(list);
       response.sendRedirect("list.do");
   }

   //  /admin/Catalog/remove.do
   public void remove(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
       String id=request.getParameter("id");
       catalogBiz.remove(Integer.parseInt(id));
       response.sendRedirect("list.do");
   }
}