jsp+servlet+cookie 无法记住密码

<body>

    <div class="container">

      <form class="form-signin" action="LoginCheck" method="post">
        <h2 class="form-signin-heading">登录  </h2>
         
        <input type="text" id="inputEmail" 
               class="form-control"   placeholder="请输入手机号" 
               required autofocus  name="uID" value="${ID}">
        <label for="inputPassword" class="sr-only" >
                             请输入密码
         </label>
         
        <input type="password" id="inputPassword" 
               class="form-control" placeholder="请输入密码" 
               required name="upsw" value="${psw}">
        <div class="checkbox">
          <label>
            <input type="checkbox" name="remember" value="rememberme"> 记住我的账号与密码
          </label>
        </div>
        <button class="btn btn-lg btn-primary btn-block" type="submit">登录</button>
      </form>
    </div> <!-- /container -->
    
<%
					String uID = null;
					String upwd = null;
					Cookie[] cookies = request.getCookies();
					for (int i = 0; i < cookies.length; i++) {
						if (cookies[i].getName().equals("userinfo")) {
							//存着数据（用户名+密码）
							uID = cookies[i].getValue().split("-")[0];
							upwd = cookies[i].getValue().split("-")[1];
							//再一次的存起来（备用）
							request.setAttribute("ID", uID);
							request.setAttribute("psw", upwd);
						}
					}
				%>

    <!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
    <script src="https://cdn.jsdelivr.net/npm/@bootcss/v3.bootcss.com@1.0.8/assets/js/ie10-viewport-bug-workaround.js"></script>
</body>

LoginCheck

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
          
		  PrintWriter out=response.getWriter();
		  request.setCharacterEncoding("UTF-8");
		  response.setContentType("text/html;charset=UTF-8");
		  response.setCharacterEncoding("UTF-8");
		  
		  //获取用户账号、是否保留？
		  String uID=request.getParameter("uID");
		  String upsw=request.getParameter("upsw");
		  String remember=request.getParameter("remember");
		  
		  //out.println(uID);
		  //out.println(upsw);
		  //out.println(remember);
		  
		  //登录验证
		  UserDao dao=new UserDao();
		  beans.User u=new User();
		  u.setUserID(uID);
		  u.setUserpsw(upsw);
		  int i=dao.loginValidate(u);
		  
		
		  //有此用户
		  if(i==1){
			  //out.println("success!");
			  //request.setAttribute("userID", uID);
			  //request.setAttribute("userpsw", upsw);
			  if("rememberme".equals(remember)){
				    // 构造Cookie对象
					// 添加到Cookie中
					Cookie cookie = new Cookie("userinfo", uID + "-" + upsw);
					// 设置过期时间
					cookie.setMaxAge(60*60*24);
					// 存储
					response.addCookie(cookie);
			  }
		     
			  request.getRequestDispatcher("/index.jsp").forward(request, response);
		  }
		  
		  else{
			
			  //request.getRequestDispatcher("/Login.jsp?error=yes").forward(request, response);
			  out.print("error");
		  }
            
		  
	}

再次返回登录界面依然是没有账号和密码的

response.getCookies去试试

另外你在servlet中都判断好了，为什么不用modelAndView 或者model去传参