如何在struts中的action的execute方法()中弹出对话框（弹出 删除成功 修改成功 添

 

如何在struts中的action的execute方法()中弹出对话框， public ActionForward execute(ActionMapping mapping, ActionForm form,     HttpServletRequest request, HttpServletResponse response) throws IOException {    // TODO Auto-generated method stub]       // 让页面不缓存[设置JSP页面立即过期]    response.setHeader("progma", "no-cache");    response.setHeader("Cache-Control", "no-cache");    response.setDateHeader("Expires", 0); response.setContentType("tex/html;charset=utf-8");       //定义session      HttpSession adminSession = request.getSession();      response.setContentType("text/html;charset=utf-8");      PrintWriter out2 = response.getWriter();          if(adminSession.getAttribute("userName")==null){       out2.print("<script>alert('对不起，禁止非法访问，请先登录！');window.parent.location.href='./login.jsp';</script>");       return null;      } 下面这是一个实例，以修改成功为例，然后跳转到列表页面的.do请求（）：     response.setContentType("text/html;charset=utf-8");      PrintWriter outjs = response.getWriter();      outjs.print("<script>alert('修改成功！！');window.location.href='./lyadmin.do?method=lyAdminList&page=1';</script>");      return null; 上面的是在你点了　修改成功　弹出窗口中的确认后，在右边iframe中打开列表页面，如果想在新窗口中打开的话，加parent      response.setContentType("text/html;charset=utf-8");      PrintWriter outjs = response.getWriter();      outjs.print("<script>alert('修改成功！！');window.parent.location.href ='./lyadmin.do?method=lyAdminList&page=1';</script>");