springmvc+mybatis+sql server实现简单登录功能

一、源码：

1、Users.java

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;}}

2、UsersController.java

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());@Resourceprivate 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";}}

3、UsersService.java

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);}

4、UsersServiceImpl.java

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 {@Resourceprivate UsersMapper usersMapper;/** * 添加用户信息 *  * @param param */@Overridepublic void insertUsers(Map<String, Object> param) {usersMapper.insertUsers(param);}/** * 删除用户信息 *  * @param id */@Overridepublic void deleteUsers(int id) {usersMapper.deleteUsers(id);}/** * 修改用户信息 *  * @param param */@Overridepublic void updateUsers(Map<String, Object> param) {usersMapper.updateUsers(param);}/** * 查询用户信息(后台) *  * @return List<Users> */@Overridepublic ArrayList<Users> searchUsers() {return usersMapper.searchUsers();}/** * 根据用户名称查询用户信息(后台) *  * @return List<Users> */@Overridepublic ArrayList<Users> searchUsersByUsername(String username) {return usersMapper.searchUsersByUsername(username);}/** * 根据编号查询用户信息 *  * @param id * @return Users */@Overridepublic 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);}}

5、UsersMapper.java

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);}

6、UsersMapper.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="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>

6、jdbc.properties

jdbc_driver=com.microsoft.sqlserver.jdbc.SQLServerDriverjdbc_url=jdbc:sqlserver://127.0.0.1:1433;DatabaseName=policestationjdbc_username=sajdbc_password=systemadmin

7、applicationContext.xml

<?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/beanshttp://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://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>

8、mybatis-config.xml

<?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>

9、spring-servlet.xml

<?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>

10、web.xml

<?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>

11、index.jsp

<%@ 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>

12、login.jsp

<%@ 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>

13、logins.jsp

<%@ 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>

14、main.jsp

<%@ 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>

二、lib下项目支持的驱动包(以下是需要的jar包，文件太大，无法上传请看图片，按照下面的版本下载就可以。)

三、需要的数据库文件可自行设计建库。