使用cookie设置记住或自动登入登入的用户名和密码

港控/mmm° 2023-01-03 14:20 137阅读 0赞

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public static void remeberMeByCookie(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException { //获取页面中的登录名和密码 String name = request.getParameter("name"); String password = request.getParameter("password"); //创建2个Cookie，分别用来存放登录名和密码 //处理Cookie中存在的中文字符 String codeName = URLEncoder.encode(name, "UTF-8"); Cookie nameCookie = new Cookie("name",codeName); Cookie passwordCookie = new Cookie("password",password); //设置Cookie的有效路径，有效路径定义为项目的根路径 //System.out.println("path="+request.getContextPath()); nameCookie.setPath(request.getContextPath()+"/"); passwordCookie.setPath(request.getContextPath()+"/"); /** * 从页面中获取记住我的复选框的值， * * 如果有值，设置Cookie的有效时长 * * 如果没有值，清空Cookie的有效时长 * <input type="checkbox" name="remeberMe" id="remeberMe" value="yes"> */ String remeberMe = request.getParameter("remeberMe"); //设置Cookie的有效时长 if(remeberMe!=null && remeberMe.equals("yes")){ nameCookie.setMaxAge(7*24*60*60); passwordCookie.setMaxAge(7*24*60*60); } //清空Cookie的有效时长 else{ nameCookie.setMaxAge(0); passwordCookie.setMaxAge(0); } //将2个Cookie的对象存放到response对象 response.addCookie(nameCookie); response.addCookie(passwordCookie); }

在jsp页面中进行设置：

<% String name = ""; String password = ""; String checked = ""; Cookie [] cookies = request.getCookies(); for(int i=0;cookies!=null && i<cookies.length;i++){ Cookie cookie = cookies[i]; if(cookie!=null && "name".equals(cookie.getName())){ name = URLDecoder.decode(cookie.getValue(),"UTF-8"); checked = "checked"; } if(cookie!=null && "password".equals(cookie.getName())){ password = cookie.getValue(); } } %>

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