springmvc+mybatis+sql server实现简单登录功能

package com.login.entity;import java.io.Serializable;public class Users implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
private Integer id;
private String username;
private String password;public Users() {
super();
}public Users(Integer id, String username, String password) {
super();
this.id = id;
this.username = username;
this.password = password;
}public Integer getId() {
return id;
}public void setId(Integer id) {
this.id = id;
}public String getUsername() {
return username;
}public void setUsername(String username) {
this.username = username;
}public String getPassword() {
return password;
}public void setPassword(String password) {
this.password = password;
}}

package com.login.controller;import java.util.HashMap;import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;import com.login.entity.Users;
import com.login.service.UsersService;
import com.login.util.MD5Util;@Controller
@RequestMapping("/")
public class UsersController {protected final Log logger = LogFactory.getLog(getClass());@Resource
private UsersService usersService;@RequestMapping("main")
public String main() {
return "main";
}@RequestMapping("login")
public String login() {return "login";/*HashMap<String, Object> users = new HashMap<String, Object>();
users.put("username",username.trim());
users.put("password",MD5Util.string2MD5(password.trim()));
Users one=usersService.getUserByUsernameAndPassword(users);
HttpSession session = request.getSession();
session.setAttribute("one",one);
if(one==null){
model.addAttribute("error","用户名或密码错误！");
return "login";
}else{
return "redirect:/main";
}*/
}@RequestMapping("adminis")
public String adminis(@Param("username") String username,@Param("password") String password,HttpServletRequest request,Model model) {
HttpSession session = request.getSession();
session.setAttribute("username",username);
session.setAttribute("password",password);
if(username==null||username==""){
model.addAttribute("error","用户名不能为空！");
return "login";
}else if(password==null||password==""){
model.addAttribute("error","密码不能为空！");
return "logins";
}
HashMap<String, Object> users = new HashMap<String, Object>();
users.put("username",username.trim());
users.put("password",MD5Util.string2MD5(password.trim()));
Users user=usersService.getUserByUsernameAndPassword(users);session.setAttribute("user",user);
if(user==null){
model.addAttribute("error","用户名或密码错误！");
return "logins";
}else{
return "redirect:/admin";
}
}@RequestMapping("admin")
public String admin() {
return "main";
}@RequestMapping("logout")
public String logout(HttpServletRequest request) {
request.getSession().removeAttribute("user");
request.getSession().invalidate();
return "login";
}}

package com.login.service;import java.util.ArrayList;
import java.util.Map;import com.login.entity.Users;public interface UsersService {/**
* 添加用户信息
* @param param
*/
public void insertUsers(Map<String, Object> param);/**
* 删除用户信息
* @param id
*/
public void deleteUsers(int id);/**
* 修改用户信息
* @param param
*/
public void updateUsers(Map<String, Object> param);/**
* 查询用户信息(后台)
* @return List<Users>
*/
public ArrayList<Users> searchUsers();/**
* 根据用户名称查询用户信息(后台)
* @return List<Users>
*/
public ArrayList<Users> searchUsersByUsername(String username);/**
* 根据编号查询用户信息
* @param id
* @return Users
*/
public Users searchUsersById(int id);/**
* 根据用户名和密码查询用户是否存在
* @param param
* @return Users
*/
public Users getUserByUsernameAndPassword(Map<String, Object> param);
}

package com.login.service.impl;import java.util.ArrayList;
import java.util.Map;import javax.annotation.Resource;import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;import com.login.entity.Users;
import com.login.mapper.UsersMapper;
import com.login.service.UsersService;@Service
@Transactional
// @Transactional表示该类被Spring作为管理事务的类
public class UsersServiceImpl implements UsersService {@Resource
private UsersMapper usersMapper;/**
* 添加用户信息
*
* @param param
*/
@Override
public void insertUsers(Map<String, Object> param) {
usersMapper.insertUsers(param);
}/**
* 删除用户信息
*
* @param id
*/
@Override
public void deleteUsers(int id) {
usersMapper.deleteUsers(id);
}/**
* 修改用户信息
*
* @param param
*/
@Override
public void updateUsers(Map<String, Object> param) {
usersMapper.updateUsers(param);
}/**
* 查询用户信息(后台)
*
* @return List<Users>
*/
@Override
public ArrayList<Users> searchUsers() {
return usersMapper.searchUsers();
}/**
* 根据用户名称查询用户信息(后台)
*
* @return List<Users>
*/
@Override
public ArrayList<Users> searchUsersByUsername(String username) {
return usersMapper.searchUsersByUsername(username);
}/**
* 根据编号查询用户信息
*
* @param id
* @return Users
*/
@Override
public Users searchUsersById(int id) {
return usersMapper.searchUsersById(id);
}/**
* 根据用户名和密码查询用户是否存在
*
* @param param
* @return Users
*/
public Users getUserByUsernameAndPassword(Map<String, Object> param) {
return usersMapper.getUserByUsernameAndPassword(param);
}
}

package com.login.mapper;import java.util.ArrayList;
import java.util.Map;import com.login.entity.Users;public interface UsersMapper {/**
* 添加用户信息
*
* @param param
*/
public void insertUsers(Map<String, Object> param);/**
* 删除用户信息
*
* @param id
*/
public void deleteUsers(int id);/**
* 修改用户信息
*
* @param param
*/
public void updateUsers(Map<String, Object> param);/**
* 查询用户信息(后台)
*
* @return ArrayList<Users>
*/
public ArrayList<Users> searchUsers();/**
* 根据用户名称查询用户信息(后台)
*
* @return ArrayList<Users>
*/
public ArrayList<Users> searchUsersByUsername(String username);/**
* 根据编号查询用户信息
*
* @param id
* @return Users
*/
public Users searchUsersById(int id);/**
* 根据用户名和密码查询用户是否存在
*
* @param param
* @return Users
*/
public Users getUserByUsernameAndPassword(Map<String, Object> param);}

<?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="com.login.mapper.UsersMapper"><insert id="insertUsers" parameterType="java.util.Map">
INSERT INTO tbl_Users ([username],[password]) VALUES (#{username},#{password})
<selectKey keyProperty="id" resultType="int" order="AFTER">
select @@identity
</selectKey>
</insert><select id="deleteUsers" parameterType="java.lang.Integer">
delete from tbl_Users where id = #{id}
</select><update id="updateUsers" parameterType="com.login.entity.Users" statementType="PREPARED">
update tbl_Users
<set>
<if test="username != null">username = #{username},</if>
<if test="password != null">password = #{password},</if>
</set>
where id = #{id}
</update><select id="searchUsers" parameterType="java.util.Map" resultType="com.login.entity.Users">
select * from tbl_Users
</select><select id="searchUsersByUsername" parameterType="java.lang.String" resultType="com.login.entity.Users">
select * from tbl_Users where username like '%${_parameter}%'
</select><select id="searchUsersById" parameterType="java.lang.Integer" resultType="com.login.entity.Users">
select * from tbl_Users where id = #{id}
</select><select id="getUserByUsernameAndPassword" parameterType="java.util.Map" resultType="com.login.entity.Users">
select * from tbl_Users where username=#{username} and password=#{password}
</select>
</mapper>

jdbc_driver=com.microsoft.sqlserver.jdbc.SQLServerDriver
jdbc_url=jdbc:sqlserver://127.0.0.1:1433;DatabaseName=policestation
jdbc_username=sa
jdbc_password=systemadmin

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd"><!-- 引入jdbc配置文件 -->
<context:property-placeholder location="config/jdbc.properties" /><!--配制数据源-->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc_driver}"></property>
<property name="url" value="${jdbc_url}"></property>
<property name="username" value="${jdbc_username}"></property>
<property name="password" value="${jdbc_password}"></property>
</bean><!-- 创建sqlSessionFactory，同时指定数据源 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="/WEB-INF/mybatis-config.xml"/>
<!-- 自动扫描mapper目录, 省掉mybatis-config.xml里的手工配置 -->
<property name="mapperLocations">
<list>
<value>classpath:com/login/mapper/*.xml</value>
</list>
</property>
</bean> <!-- 通过扫描的模式，扫描目录在com/login/mapper目录下 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.login.mapper" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean><!-- (事务管理)-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 使用annotation定义数据库事务，这样可以在类或方法中直接使用@Transactional注解来声明事务 -->
<tx:annotation-driven transaction-manager="transactionManager" /><tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="approve" propagation="REQUIRED" />
<tx:method name="undo" propagation="REQUIRED" />
<tx:method name="load*" propagation="SUPPORTS" read-only="true" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
<tx:method name="search*" propagation="SUPPORTS" read-only="true" />
<tx:method name="*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice><aop:config>
<aop:pointcut id="serviceMethod" expression="execution(* com.login.service.*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethod" />
</aop:config><!-- 自动搜索注解路径-->
<context:component-scan base-package="com.login"></context:component-scan>
</beans>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration><!--整合Spring的时候 只有 settings typeAliases mapper 三个属性有用, 其余的要在spring总配置文件中会覆盖 -->
<settings>
<!-- 全局映射器，是否启用缓存 -->
<setting name="cacheEnabled" value="false" />
<!-- 查询时，关闭关联对象即时加载以提高性能 -->
<!-- 设置关联对象加载的形态，此处为按需加载字段(加载字段由SQL指 定)，不会加载关联表的所有字段，以提高性能 -->
<setting name="aggressiveLazyLoading" value="false" />
<!-- 对于未知的SQL查询，允许返回不同的结果集以达到通用的效果 -->
<setting name="multipleResultSetsEnabled" value="true" />
<!-- 允许使用列标签代替列名 -->
<setting name="useColumnLabel" value="true" />
<!-- 允许使用自定义的主键值(比如由程序生成的UUID 32位编码作为键值)，数据表的PK生成策略将被覆盖 -->
<setting name="useGeneratedKeys" value="true" />
<!-- 给予被嵌套的resultMap以字段-属性的映射支持 -->
<setting name="autoMappingBehavior" value="FULL" />
<!-- 对于批量更新操作缓存SQL以提高性能 -->
<setting name="defaultExecutorType" value="BATCH" />
<!-- 数据库超过25000秒仍未响应则超时 -->
<setting name="defaultStatementTimeout" value="25000" />
</settings></configuration>

<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"><!-- 自动扫描的包名 -->
<context:component-scan base-package="com.login.controller"/><!-- 默认的注解映射的支持 -->
<mvc:annotation-driven /> <!-- 静态资源映射 -->
<mvc:resources mapping="/css/**" location="/WEB-INF/view/css/" cache-period="31556926"/>
<mvc:resources mapping="/images/**" location="/WEB-INF/view/images/" cache-period="31556926"/>
<mvc:resources mapping="/img/**" location="/WEB-INF/view/img/" cache-period="31556926"/>
<mvc:resources mapping="/js/**" location="/WEB-INF/view/js/" cache-period="31556926"/>
<mvc:resources mapping="/m_css/**" location="/WEB-INF/view/manager/css/" cache-period="31556926"/>
<mvc:resources mapping="/m_images/**" location="/WEB-INF/view/manager/images/" cache-period="31556926"/>
<mvc:resources mapping="/datePicker/**" location="/WEB-INF/view/manager/My97DatePicker/" cache-period="31556926"/>
<mvc:resources mapping="/dtree/**" location="/WEB-INF/view/dtree/" cache-period="31556926"/>
<mvc:resources mapping="/ztree/**" location="/WEB-INF/view/zTree_v3/" cache-period="31556926"/>
<mvc:resources mapping="/FCKeditor/**" location="/FCKeditor/" cache-period="31556926"/>
<mvc:resources mapping="/UserFiles/**" location="/UserFiles/" cache-period="31556926"/>
<mvc:resources mapping="/upload/**" location="/upload/" cache-period="31556926"/>
<mvc:resources mapping="/uploadFriendly/**" location="/uploadFriendly/" cache-period="31556926"/>
<mvc:resources mapping="/uploadAdvert/**" location="/uploadAdvert/" cache-period="31556926"/>
<mvc:resources mapping="/uploadNotice/**" location="/uploadNotice/" cache-period="31556926"/>
<mvc:resources mapping="/tool/**" location="/tool/" cache-period="31556926"/>
<mvc:resources mapping="/loginImg/**" location="/WEB-INF/view/manager/login/images/" cache-period="31556926"/><!-- 对模型视图添加前后缀 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/" />
<property name="suffix" value=".jsp" />
</bean> <!-- file upload -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="-1" /><!-- 字节单位 -->
<property name="maxInMemorySize" value="2048" /><!-- 2M -->
<property name="defaultEncoding" value="UTF-8" />
</bean></beans>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>错误跳转页面</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<display-name>session销毁时间(分钟)</display-name>
<session-config>
<session-timeout>30</session-timeout>
</session-config>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<display-name>Spring字符集过滤器</display-name>
<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head> <body>
This is my JSP page. <br>
<a href="login.html">管理登录</a>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.login.entity.Users"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>用户登录</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<style>
body{margin:0; padding:0; font-size:9pt;}
#login{margin:auto; width:975px; height:368px; margin-top:120px;}
#top_left{width:691px; height:89px; float:left;}
#top_left img {margin-left:33px;}
#top_center{width:248px; height:89px; background:url(loginImg/login_05.gif); float:left;}#center_left{width:691px; height:190px; background:url(loginImg/login_09.jpg); float:left;}
#center_middle{width:248px; height:190px; float:left; background:url(loginImg/login_13.gif) repeat-y;}
#center_right{width:36px; height:190px; float:right; background:url(loginImg/login_11.gif);}#down_left{width:691px; height:89px; float:left; margin-top:15px;}
#down_center{width:248px; height:89px; background:url(loginImg/login_16.gif); float:left;}
#inf{width:691px; height:38px; background:url(loginImg/login_18.gif) no-repeat; }
.inf_text{display:block; width:100px; height:20px; font-size:16px; font-weight:bolder; color:#fff; margin-left:17px; margin-top:12px; float:left;}
.copyright{display:block; float:left; margin-left:17px; margin-top:15px;}#message{text-align:center;color:red;}
#user{ margin-left:40px; margin-top:15px;}
#password{margin-left:40px; margin-top:25px; height:25px;}
input{width:120px; height:18px; border:solid 1px #aca7a7; font-size:9pt;}
#btn{margin-left:30px; margin-top:40px;height:25px; margin-right:28px; text-align:center;}
#btn a{display:block; line-height:25px; background: url(loginImg/bt_bg.gif); border: solid 1px #b6b6b6; width:65px; float:left; margin-left:15px; text-decoration:none; color:#000;}
#btn input{display:block;height:25px; line-height:22px; background: url(loginImg/bt_bg.gif); border: solid 1px #b6b6b6; width:65px; float:left; margin-left:2px; text-decoration:none; color:#000;}
</style>
<script type="text/javascript">
function show(){
if(document.getElementById("name").value==""){
document.getElementById("showname").innerHTML="用户名不能为空！";
document.getElementById("name").focus();
return false;
}else if(document.getElementById("pwd").value==""){
document.getElementById("showname").innerHTML="密码不能为空！";
document.getElementById("pwd").focus();
return false;
}else{
return true;
}
</script>
</head>
<body>
<form action="adminis.html" method="post" name="myform">
<div id="login">
<div id="top">
<div id="top_left"><img src="loginImg/login_03.gif"/></div>
<div id="top_center"></div>
</div>
<div id="center">
<div id="center_left"></div>
<div id="center_middle">
<div id="message">${error}<span id="showname" style="display:inline;"></span></div>
<div id="user">用  户：<input type="text" name="username" onblur="show()" id="name"/></div>
<div id="password">密  码：<input type="password" name="password" onblur="show()" id="pwd"/></div>
<div id="btn"><a href="javascript:document.myform.submit();">登  录</a><a href="javascript:document.myform.reset();">清  空</a></div>
</div>
<div id="center_right"></div>
</div>
<div id="down">
<div id="down_left">
<div id="inf"><span class="inf_text">版本信息</span><span class="copyright">信息管理系统 2015 v1.0</span><span class="copyright" style="color:red;">请在IE10以下版本中使用后台功能</span></div>
</div>
<div id="down_center"></div>
</div>
</div>
</form>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.login.entity.Users"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>用户登录</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<style>
body{margin:0; padding:0; font-size:9pt;}
#login{margin:auto; width:975px; height:368px; margin-top:120px;}
#top_left{width:691px; height:89px; float:left;}
#top_left img {margin-left:33px;}
#top_center{width:248px; height:89px; background:url(loginImg/login_05.gif); float:left;}#center_left{width:691px; height:190px; background:url(loginImg/login_09.jpg); float:left;}
#center_middle{width:248px; height:190px; float:left; background:url(loginImg/login_13.gif) repeat-y;}
#center_right{width:36px; height:190px; float:right; background:url(loginImg/login_11.gif);}#down_left{width:691px; height:89px; float:left; margin-top:15px;}
#down_center{width:248px; height:89px; background:url(loginImg/login_16.gif); float:left;}
#inf{width:691px; height:38px; background:url(loginImg/login_18.gif) no-repeat; }
.inf_text{display:block; width:100px; height:20px; font-size:16px; font-weight:bolder; color:#fff; margin-left:17px; margin-top:12px; float:left;}
.copyright{display:block; float:left; margin-left:17px; margin-top:15px;}#message{text-align:center;color:red;}
#user{ margin-left:40px; margin-top:15px;}
#password{margin-left:40px; margin-top:25px; height:25px;}
input{width:120px; height:18px; border:solid 1px #aca7a7; font-size:9pt;}
#btn{margin-left:30px; margin-top:40px;height:25px; margin-right:28px; text-align:center;}
#btn a{display:block; line-height:25px; background: url(loginImg/bt_bg.gif); border: solid 1px #b6b6b6; width:65px; float:left; margin-left:15px; text-decoration:none; color:#000;}
#btn input{display:block;height:25px; line-height:22px; background: url(loginImg/bt_bg.gif); border: solid 1px #b6b6b6; width:65px; float:left; margin-left:2px; text-decoration:none; color:#000;}
</style>
<script type="text/javascript">
function show(){
if(document.getElementById("name").value==""){
document.getElementById("showname").innerHTML="用户名不能为空！";
document.getElementById("name").focus();
return false;
}else if(document.getElementById("pwd").value==""){
document.getElementById("showname").innerHTML="密码不能为空！";
document.getElementById("pwd").focus();
return false;
}else{
return true;
}</script>
</head>
<body>
<form action="adminis.html" method="post" name="myform">
<div id="login">
<div id="top">
<div id="top_left"><img src="loginImg/login_03.gif"/></div>
<div id="top_center"></div>
</div>
<div id="center">
<div id="center_left"></div>
<div id="center_middle">
<div id="message">${error}<span id="showname" style="display:inline;"></span></div>
<div id="user">用  户：<input type="text" name="username" value="<%=(String)session.getAttribute("username") %>" onblur="show()" id="name"/></div>
<div id="password">密  码：<input type="password" name="password" value="<%=(String)session.getAttribute("password") %>" onblur="show()" id="pwd"/></div>
<div id="btn"><a href="javascript:document.myform.submit();">登  录</a><a href="login.html">清  空</a></div>
</div>
<div id="center_right"></div>
</div>
<div id="down">
<div id="down_left">
<div id="inf"><span class="inf_text">版本信息</span><span class="copyright">信息管理系统 2015 v1.0</span><span class="copyright" style="color:red;">请在IE10以下版本中使用后台功能</span></div>
</div>
<div id="down_center"></div>
</div>
</div>
</form>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.login.entity.Users"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<%
Users user=(Users)session.getAttribute("user");
%>
<head> <title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head> <body>
This is my JSP page. <br>
欢迎您<%=user.getUsername() %>
</body>
</html>