jsp - 通过jsp调用servlet而不提交表单

Question

在我的应用程序中有这样的菜单栏，

运动的

所以当我点击运动按钮时，我想调用“getlink”servlet 并提交值“sport”。我尝试了几种方法，但没有一个是正确的。

这是我的 servlet

 protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String vdo_type = request.getParameter("Science");

              int page = 1;
        int recordsPerPage = 10;
        if(request.getParameter("page") != null)
            page = Integer.parseInt(request.getParameter("page"));
      //  EmployeeDAO dao = new EmployeeDAO();
        Getlink_Dao be=new Getlink_Dao();
        List<Utube_to> list = be.getRecentAdd((page-1)*recordsPerPage,
                                 recordsPerPage,vdo_type);
        int noOfRecords = be.getNoOfRecords();
        int noOfPages = (int) Math.ceil(noOfRecords * 1.0 / recordsPerPage);
        request.setAttribute("allvdos", list);
        request.setAttribute("noOfPages", noOfPages);
        request.setAttribute("currentPage", page);
        RequestDispatcher view = request.getRequestDispatcher("Home.jsp");
        view.forward(request, response); 


    }

Answer 1

While building the menu itself append query string to that href link like this. Then it will send that value to your servlet

<li><a href="getlink?linkname=sport"></a></li>

then access that sport value/any other clicked link value in your servlet as follows

String vdo_type = request.getParameter("linkname");