登录页面的下次自动登录

1.jsp页面

 1  <%
 2      String name ="";
 3      String pwd="";
 4      String checked="";
 5      Cookie[] cookies = request.getCookies();
 6      if(cookies != null && cookies.length >0){
 7          for(Cookie cookie : cookies){
 8              if("name".equals(cookie.getName())){
 9                  name=cookie.getValue();
10                  checked="checked";
11              }
12              if("pwd".equals(cookie.getName())){
13                  pwd = cookie.getValue();
14              }
15          }
16      }
17  
18   %>
19 
20 
21 <input name="rem_u"  type="checkbox" id="rem_u" value="rem_u"  <%=checked %> />
22            <span for="rem_u">下次自动登录</span>

 

2.后台代码

 1         // 把用户名,密码添加到cookie
 2         Cookie nameCookie = new Cookie("name",name);
 3         Cookie pwdCookie = new Cookie("pwd",pwd);
 4         nameCookie.setPath(request.getContextPath()+"/");//设置Cookie的保存路径
 5         pwdCookie.setPath(request.getContextPath()+"/");
 6         
 7         String rem_u =request.getParameter("rem_u");//下次自动登录的checkbox
 8         if(rem_u == null){
 9             nameCookie.setMaxAge(0);//删除Cookie
10             pwdCookie.setMaxAge(0);
11         }else{
12             nameCookie.setMaxAge(7*24*60*60);
13             pwdCookie.setMaxAge(7*24*60*60);
14         }
15         response.addCookie(nameCookie);//写入Cookie
16         response.addCookie(pwdCookie);

 

posted @ 2017-04-08 21:12  写最少的代码  阅读(1155)  评论(0)  编辑  收藏  举报