现在很多浏览器都会提供是否记住密码的功能。
当我们写登录模块是 如果是使用 form提交 则能被 浏览器识别到
但是form提交会在链接上暴露出传的参数
如果是用js做的登录 浏览器是检测不到的
这样我们需要自己加上 js记住密码的功能
主要用到了 cookie.js
以及login.jsp
代码如下：
cookie.js
//新建cookie。
//hours为空字符串时,cookie的生存期至浏览器会话结束。hours为数字0时,建立的是一个失效的cookie,这个cookie会覆盖已经建立过的同名、同path的cookie（如果这个cookie存在）。
function setCookie(name,value,hours,path){
var name = escape(name);
var value = escape(value);
var expires = new Date();
expires.setTime(expires.getTime() + hours*3600000);
path = path == "" ? "" : ";path=" + path;
_expires = (typeof hours) == "string" ? "" : ";expires=" + expires.toUTCString();
document.cookie = name + "=" + value + _expires + path;
}
//获取cookie值
function getCookieValue(name){
var name = escape(name);
//读cookie属性，这将返回文档的所有cookie
var allcookies = document.cookie;
//查找名为name的cookie的开始位置
name += "=";
var pos = allcookies.indexOf(name);
//如果找到了具有该名字的cookie，那么提取并使用它的值
if (pos != -1){ //如果pos值为-1则说明搜索"version="失败
var start = pos + name.length; //cookie值开始的位置
var end = allcookies.indexOf(";",start); //从cookie值开始的位置起搜索第一个";"的位置,即cookie值结尾的位置
if (end == -1) end = allcookies.length; //如果end值为-1说明cookie列表里只有一个cookie
var value = allcookies.substring(start,end); //提取cookie的值
return (value); //对它解码
}
else return ""; //搜索失败，返回空字符串
}
//删除cookie
function deleteCookie(name,path){
var name = escape(name);
var expires = new Date(0);
path = path == "" ? "" : ";path=" + path;
document.cookie = name + "="+ ";expires=" + expires.toUTCString() + path;
}
login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<title>login</title>
<meta name="Keywords" content=" " />
<meta name="Description" content=" " />
<script src="./scripts/jquery.min.js" type="text/javascript"></script>
<script src="./scripts/cookie.js" type="text/javascript"></script>
<script type="text/javascript">
$(function() {
var userNameValue = getCookieValue("userName");
$("#username").val(userNameValue);
var passwordValue = getCookieValue("password");
$("#password").val( passwordValue);
$("#login-box").bind('keyup',function(event){
event=document.all?window.event:event;
if((event.keyCode || event.which)==13){
checkregisterform();
}
});
});
function checkregisterform() {
var txtUserName = $("#username").val();
var txtPwd = $("#password").val();
if (!(txtUserName && txtPwd)) {
alert("请输入帐号和密码；");
return;
}
$.getJSON("<%=basePath%>login?username=" + txtUserName + "&password=" + txtPwd, function(data) {
if(data.aaa=="fail"){
location.href='loginFail.jsp';
}else{
if($("#checkbox1").is(":checked")) {
setCookie("userName",txtUserName,24,"/");
setCookie("password",txtPwd,24,"/");
}else{
deleteCookie("userName","/");
deleteCookie("password","/");
}
location.href='index.jsp';
}
});
}
</script>
</head>
<body>
<div class="navbar">
<div class="container fn-overflowHidden">
<ul class="iLogo fn-left">
<li><i></i></li>
</ul>
<ul class="iIndex fn-left">
<li class="current"><a href="#" >首页</a></li>
</ul>
</div>
</div>
<div class="mainContent">
<div class="login-wapper">
<div class="login-box" id="login-box">
<h2>登录</h2>
<div class="userInput">
<span class="icon_16 icon-name"></span>
<input id="username" name="username" type="text" class="userName" placeholder="输入用户名"/>
</div>
<div class="userInput">
<span class="icon_16 icon-psw"></span>
<input id="password" name="password" type="password" class="userPsw" placeholder="输入密码"/>
</div>
<label class="rememberPsw" id="rememberPsw"><input type="checkbox" id="checkbox1" checked="checked"> 记住密码</label>
<a class="forgetPsw" href="#" title="找回已忘记的密码">忘记密码 ?</a>
<button id="btnSubmit" class="iLogin" οnclick="checkregisterform()">登录</button>
</div>
</div>
</div>
<%@ include file="include/reports_footer.jsp"%>