1.第一步登录并验证（index.jsp）
登陆开始
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html >
<head>
<meta charset="utf-8">
<title>SL会员商城</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description"
content="Charisma, a fully featured, responsive, HTML5, Bootstrap admin template.">
<meta name="author" content="Muhammad Usman">
<!-- The styles -->
<link id="bs-css" href="/statics/css/bootstrap-cerulean.css"
rel="stylesheet">
<style type="text/css">
body {
padding-bottom: 40px;
}
.sidebar-nav {
padding: 9px 0;
}
</style>
<link href="/statics/css/bootstrap-responsive.css" rel="stylesheet">
<link href="/statics/css/charisma-app.css" rel="stylesheet">
<link href="/statics/css/jquery-ui-1.8.21.custom.css" rel="stylesheet">
<link href=‘/statics/css/fullcalendar.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/fullcalendar.print.css‘ rel=‘stylesheet‘
media=‘print‘>
<link href=‘/statics/css/chosen.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/uniform.default.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/colorbox.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/jquery.cleditor.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/jquery.noty.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/noty_theme_default.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/elfinder.min.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/elfinder.theme.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/jquery.iphone.toggle.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/opa-icons.css‘ rel=‘stylesheet‘>
<link href=‘/statics/css/uploadify.css‘ rel=‘stylesheet‘>
<!-- The HTML5 shim, for IE6-8 support of HTML5 elements -->
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<!-- The fav icon -->
<link rel="shortcut icon" href="/statics/img/favicon.ico">
</head>
<body>
<div class="container-fluid">
<div class="row-fluid">
<div class="row-fluid">
<div class="span12 center login-header">
<h2>SL会员商城</h2>
</div>
<!--/span-->
</div>
<!--/row-->
<div class="row-fluid">
<div class="well span5 center login-box">
<div class="alert alert-info">请输入登陆账号和密码@@@@@@@@</div>
<!-- 用ajax的异步提交 -->
<div class="form-horizontal">
<fieldset>
<div class="input-prepend" title="登录账号" data-rel="tooltip">
<span class="add-on"><i class="icon-user"></i></span>
<input autofocus class="input-large span10" name="loginCode" id="loginCode" type="text" value="" />
</div>
<div class="clearfix"></div>
<div class="input-prepend" title="登录密码" data-rel="tooltip">
<span class="add-on"><i class="icon-lock"></i></span>
<input class="input-large span10" name="password" id="password" type="password" value="" />
</div>
<div class="clearfix"></div>
<!-- <div class="input-prepend">
<label class="remember" for="remember"><input type="checkbox" id="remember" />Remember me</label>
</div>-->
<div class="clearfix"></div>
<ul id="formtip"></ul>
<p class="center span5">
<button type="submit" class="btn btn-primary" id="loginBtn">登录</button>
</p>
</fieldset>
</div>
</div>
<!--/span-->
</div>
<!--/row-->
</div>
<!--/fluid-row-->
</div>
<!--/.fluid-container-->
<!-- external javascript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<!-- jQuery -->
<script src="/statics/js/jquery-1.7.2.min.js"></script>
<!-- jQuery UI -->
<script src="/statics/js/jquery-ui-1.8.21.custom.min.js"></script>
<!-- transition / effect library -->
<script src="/statics/js/bootstrap-transition.js"></script>
<!-- alert enhancer library -->
<script src="/statics/js/bootstrap-alert.js"></script>
<!-- modal / dialog library -->
<script src="/statics/js/bootstrap-modal.js"></script>
<!-- custom dropdown library -->
<script src="/statics/js/bootstrap-dropdown.js"></script>
<!-- scrolspy library -->
<script src="/statics/js/bootstrap-scrollspy.js"></script>
<!-- library for creating tabs -->
<script src="/statics/js/bootstrap-tab.js"></script>
<!-- library for advanced tooltip -->
<script src="/statics/js/bootstrap-tooltip.js"></script>
<!-- popover effect library -->
<script src="/statics/js/bootstrap-popover.js"></script>
<!-- button enhancer library -->
<script src="/statics/js/bootstrap-button.js"></script>
<!-- accordion library (optional, not used in demo) -->
<script src="/statics/js/bootstrap-collapse.js"></script>
<!-- carousel slideshow library (optional, not used in demo) -->
<script src="/statics/js/bootstrap-carousel.js"></script>
<!-- autocomplete library -->
<script src="/statics/js/bootstrap-typeahead.js"></script>
<!-- tour library -->
<script src="/statics/js/bootstrap-tour.js"></script>
<!-- library for cookie management -->
<script src="/statics/js/jquery.cookie.js"></script>
<!-- calander plugin -->
<script src=‘/statics/js/fullcalendar.min.js‘></script>
<!-- data table plugin -->
<script src=‘/statics/js/jquery.dataTables.min.js‘></script>
<!-- chart libraries start -->
<script src="/statics/js/excanvas.js"></script>
<script src="/statics/js/jquery.flot.min.js"></script>
<script src="/statics/js/jquery.flot.pie.min.js"></script>
<script src="/statics/js/jquery.flot.stack.js"></script>
<script src="/statics/js/jquery.flot.resize.min.js"></script>
<!-- chart libraries end -->
<!-- select or dropdown enhancer -->
<script src="/statics/js/jquery.chosen.min.js"></script>
<!-- checkbox, radio, and file input styler -->
<script src="/statics/js/jquery.uniform.min.js"></script>
<!-- plugin for gallery image view -->
<script src="/statics/js/jquery.colorbox.min.js"></script>
<!-- rich text editor library -->
<script src="/statics/js/jquery.cleditor.min.js"></script>
<!-- notification plugin -->
<script src="/statics/js/jquery.noty.js"></script>
<!-- file manager library -->
<script src="/statics/js/jquery.elfinder.min.js"></script>
<!-- star rating plugin -->
<script src="/statics/js/jquery.raty.min.js"></script>
<!-- for iOS style toggle switch -->
<script src="/statics/js/jquery.iphone.toggle.js"></script>
<!-- autogrowing textarea plugin -->
<script src="/statics/js/jquery.autogrow-textarea.js"></script>
<!-- multiple file upload plugin -->
<script src="/statics/js/jquery.uploadify-3.1.min.js"></script>
<!-- history.js for cross-browser state change on ajax -->
<script src="/statics/js/jquery.history.js"></script>
<!-- application script for Charisma demo -->
<script src="/statics/js/charisma.js"></script>
<script src="/statics/localjs/index.js"></script>
</body>
</html>
（登录验证index.js）
$("#loginBtn").click(function(){
var user=new Object();
user.loginCode=$.trim($("#loginCode").val());
user.password=$.trim($("#password").val());
user.isStart=1;
if(user.loginCode==""||user.loginCode==null){
$("#loginCode").focus();
$("#formtip").css("color","red");
$("#formtip").html("对不起，登录账号不能为空。");
}else if(user.password==""||user.password==null){
$("#password").focus();
$("#formtip").css("color","red");
$("#formtip").html("对不起登录密码不能为空。");
}else{
$("#formtip").html("");
$.ajax({
type:‘post‘,
url:‘/login.html‘,
data:{user:JSON.stringify(user)},
dataType:‘html‘,
timeout:1000,
error:function(){
$("#formtip").css("color","red");
$("#formtip").html("登录失败！请从试。");
},
success:function(result){
if(result!=""&&result=="success"){
window.location.href=‘/main.html‘;
}else if("failed"==result){
$("#formtip").css("color","red");
$("#formtip").html("登录失败，请从新登录");
$("#loginCode").val(‘‘);
$("#loginCode").focus();
$("#password").val(‘‘);
}else if(result=="nologincode"){
$("#formtip").css("color","red");
$("#loginCode").val(‘‘);
$("#loginCode").focus();
$("#formtip").html("登录账号不存在，请重新登录");
}else if(result=="pwderror"){
$("#formtip").css("color","red");
$("#password").val(‘‘).focus();
$("#formtip").html("登录密码不正确，请重新输入");
}else if(result=="nodata"){
$("#formtip").css("color","red");
$("#formtip").html("对不起没有任何数据需要处理！请输入");
}
}
});
}
});
第二步：UserMapper接口
1
public interface UserMapper {
/**
* 获取登录用户
*getLoginUser
* @param user
* @return
* @throws Exception
*/
public User getLoginUser(User user) throws Exception;
/**
* loginCodeIsExit
* 判断登录用户是否存在
* @param user
* @return
* @throws Exception
*/
public int loginCodeIsExit(User user) throws Exception;
｝
2userMappper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.slsale.dao.user.UserMapper">
<!-- getLoginUser -->
<select id="getLoginUser" resultType="user" parameterType="user">
select * from au_user where loginCode=#{loginCode} and password=#{password}
</select>
<!-- loginCodeIsExit -->
<select id="loginCodeIsExit" resultType="int" parameterType="user">
select count(1) from au_user
<trim prefix="where" prefixOverrides="and | or">
<if test="loginCode !=null">
and loginCode=#{loginCode}
</if>
<if test="isStart !=null">
and isStart=1
</if>
</trim>
</select>
</mapper>