WEB——Cookie之记住用户名

来源：互联网发布：淄博seo 编辑：程序博客网时间：2024/06/07 17:45

login.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">    <title>My JSP 'login.jsp' starting page</title>    <meta http-equiv="pragma" content="no-cache">    <meta http-equiv="cache-control" content="no-cache">    <meta http-equiv="expires" content="0">        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">    <meta http-equiv="description" content="This is my page">    <!--    <link rel="stylesheet" type="text/css" href="styles.css">    -->  </head>  <body>  <form action="/day-cookie/HServlet"  >        用户名:<input type="text" name="name" value="${cookie.remember.value}" />        <font color="red">${requestScope.error}</font>        <br>        密码:<input type="text" name="password" /><br>        <input type="checkbox" name="remember" value="yes" ${cookie.remember==null?"":"checked=checked"} />记住用户名<br>        <input type="submit" value="登录" />    </form>  </body></html>

HServlet.java

public class HServlet extends HttpServlet {    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        String name = request.getParameter("name");        if (name == null || "".equals(name.trim())) {            request.setAttribute("error", "请输入用户名");            request.getRequestDispatcher("/remember/login.jsp").forward(                    request, response);            return;        }        Cookie cookie = new Cookie("remember", name);        String remember = request.getParameter("remember");        if ("yes".equals(remember)) {            cookie.setMaxAge(60 * 60 * 24 * 7 * 2);        } else {            cookie.setMaxAge(0);        }        response.addCookie(cookie);        response.sendRedirect("/day-cookie/index.jsp");    }    @Override    protected void doPost(HttpServletRequest req, HttpServletResponse resp)            throws ServletException, IOException {        doGet(req, resp);    }}

这里写图片描述

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