Java 为什么此链接在注销（或使会话无效）后仍然有效？

我已经在jsp中为表中的每一行生成了动态删除链接。当我点击该链接时，它应该会删除关联的行，它工作正常。但一旦我注销，它就不应该删除该行。我复制了删除链接并注销。现在，如果我运行该链接，它会将我重定向到登录页面。如果我再次登录，它会在表中查看学生。它会删除该特定行

为什么即使删除了属性并使会话无效，它仍然能够到达servlet

为删除学生生成的链接

http://localhost:8080/feeManagement/Delete_Action_Student?delete=67657

这是我的学生，注销servlet

@WebServlet("/Delete_Action_Student")
public class Delete_Action_Student extends HttpServlet {
    private static final long serialVersionUID = 1L;

    public Delete_Action_Student() {
        super();
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        if (request.getAttribute("Accemail") != "") {
            String id = request.getParameter("delete");
            try {
                if (StudentDAOimpl.removeStudent(id)) {
                    request.setAttribute("msg", "deleted successfully");
                    getServletContext().getRequestDispatcher("/Delete_Student").forward(request, response);
                } else {
                    request.setAttribute("msg", "failed to remove");
                    getServletContext().getRequestDispatcher("/Delete_Student").forward(request, response);
                }
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        } else {
            response.sendRedirect("/loginjsp.jsp");
        }

    }

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

    }

}

注销代码段

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
     HttpSession session = request.getSession();
     session.removeAttribute("Accemail");
     session.invalidate();
     response.sendRedirect("loginjsp.jsp");

    }

---

浏览器的行为是将您来自的url存储到登录页面。因此，成功登录后，它将重定向到该url

成功登录后，如果您希望始终登录到主页，您可以使用过滤器来完成此操作