java web项目用cookie记住用户名、密码

来源：互联网发布：芜湖java招聘编辑：程序博客网时间：2024/06/07 18:14

1.jsp页面：

<% String flag = (String)session.getAttribute("flag")==null?"":(String)session.getAttribute("flag"); String name = "";String password = "";try{     Cookie[] cookies=request.getCookies();     if(cookies!=null){     for(int i=0;i<cookies.length;i++){         if(cookies[i].getName().equals("cookie_user")){         String value =  cookies[i].getValue();        if(value!=null&&!"".equals(value)){            name=cookies[i].getValue().split("-")[0];             if(cookies[i].getValue().split("-")[1]!=null && !cookies[i].getValue().split("-")[1].equals("null")){     password=cookies[i].getValue().split("-")[1];              }                                  }            }         request.setAttribute("name",name);         request.setAttribute("passward",password);     }     } }catch(Exception e){     e.printStackTrace(); } %> <body><div id="logo"><img src="<%=request.getContextPath() %>/frontsite/Images/Logo.jpg" width="244" height="44" alt="" /></div><div id="loginfrm"><form action="<%=request.getContextPath() %>/frontsite/login.do?method=login" method="post" id="forms" onsubmit="checkForm();return false;">    <div class="frm">        <ul>            <li class="l1">用户名：</li>            <li class="l2"><input name="login_id" type="text" id="login_id" class="input" value="<%=name %>"/></li>            <li class="l3">* 最大限度为20字节</li>            <li class="l1">密码：</li>            <li class="l2"><input name="login_pwd" type="password" id="login_pwd" class="input" value="<%=password %>"/></li>            <li class="l3">* 最大限度为20字节</li>                          <li class="l1">验证码：                <li class="l2" style="width: 180px;"><input name="checkImg" id="checkImg" type="text" class="input" style="width: 60px;" size="10" />                  <img src="<%=request.getContextPath() %>/CheckImg_FT" width="49" height="22" /></li>                         <li class="l4">                <label><input type="checkbox" name="flag" id="flag" value="1" <%if(flag!=null && flag.equals("1")){%> checked ; value ="1"; <%}else {%> value="0" <%;}%> />记住密码</label>                <label><span style="margin-left:10px; color: #F00;" ><html:errors /></span></label>                           </li>             <li class="l4"><input type="image" name="imageField" id="imageField" src="<%=request.getContextPath() %>/frontsite/Images/login_bnt.jpg" /></li>        </ul>    </div></form></div></body>

2.java 类：

String flag = request.getParameter("flag");//set cookieif(flag!=null && flag.equals("1")){    Cookie cookie = new Cookie("cookie_user", po.getLogin_id()+"-"+form.getLogin_pwd());                    cookie.setMaxAge(60*60*24*30); //cookie 保存30天response.addCookie(cookie);}else{      Cookie cookie = new Cookie("cookie_user",po.getLogin_id()+"-"+null);                    cookie.setMaxAge(60*60*24*30); //cookie 保存30天    response.addCookie(cookie);             }

http://my.oschina.net/gao0516/blog/72507

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