tomcat可以发布，但是有404错误，找了很久，问题不知道在哪里

public class GlobalController extends GenericServlet {
    @Override
    public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
        /**
            .do
            /login.do               DefaultController login
            /Cake/detail.do         CakeController    detail
            /admin/Cake/add.do      CakeController    add
         */
        HttpServletRequest request = (HttpServletRequest)servletRequest;
        HttpServletResponse response = (HttpServletResponse)servletResponse;
        String path = request.getServletPath();
        if (path.indexOf("/admin")!=-1){
            path = path.substring(7);
        }else {
            path = path.substring(1);
        }

        /**
         * path = Catalog/list.do
         * path = 以下一种
             login.do               DefaultController login
             cake/detail.do         CakeController    detail
             Cake/add.do      CakeController    add
         */
        int index = path.indexOf("/");//indexof,判断是否包含 （index!=-1） 意思为包含
        String className = null;
        String methodName = null;
        if (index!=-1){
            className = "com.imooc.icake.controller."+path.substring(0,index)+"Controller";
            methodName = path.substring(index+1,path.indexOf(".do"));
        }else{
            className = "com.imooc.icake.controller.DefaultController";
            methodName = path.substring(0,path.indexOf(".do"));
        }

        try {
            Class cla = Class.forName(className);
//            Object object = cla.getDeclaredConstructor(int.class).newInstance();
            Object object = cla.newInstance();
            Method method = cla.getMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);
            method.invoke(object,request,response);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }
    }
}

public class CatalogController {

    private CatalogBiz catalogBiz = new CatalogBizImpl();
    /**
     * /admin/Catalog/list.do
     * /admin/Catalog/toAdd.do
     * /admin/Catalog/add.do
     * /admin/Catalog/remove.do
     */

    //   /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 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 IOException {
        int id = Integer.parseInt(request.getParameter("id"));
        catalogBiz.remove(id);
        response.sendRedirect("list.do");
    }
}