protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        // TODO Auto-generated method stub         response.setContentType("text/html");         response.setCharacterEncoding("utf-8");        Category category = new Category();        category.add(new String(request.getParameter("name").getBytes("iso-8859-1"), "utf-8"));        response.getWriter().println("<script>alert('添加成功');window.location.href='admin/category.jsp'</script>");    }我這里是用window.location.href 腳本操作返回頁面。這樣合理嗎？