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");
- if(flag!=null && flag.equals("1")){
- Cookie cookie = new Cookie("cookie_user", po.getLogin_id()+"-"+form.getLogin_pwd());
- cookie.setMaxAge(60*60*24*30);
- response.addCookie(cookie);
- }else{
- Cookie cookie = new Cookie("cookie_user",po.getLogin_id()+"-"+null);
- cookie.setMaxAge(60*60*24*30);
- response.addCookie(cookie);
- }
java web项目用cookie记住用户名、密码
原文：https://www.cnblogs.com/zmwf/p/9097868.html
