SSM

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SSM-spring+springmvc+mybatis实现图书管理系统登录和增删改查以及加入购
物车

在整合之前,首先在MySQL数据库中创建好用户表和书籍表

用户表
CREATE TABLE `tb_users` (
`username` varchar(10) NOT NULL,
`password` varchar(18) NOT NULL,
`email` varchar(18) NOT NULL,
`sex` varchar(2) NOT NULL,
`likes` varchar(100) DEFAULT NULL,
PRIMARY KEY (`username`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8

书籍表

CREATE TABLE `tb_books` (
`id` varchar(10) NOT NULL,

`name` varchar(20) NOT NULL,

`author` varchar(20) NOT NULL,

____`publish`
varchar(20) NOT NULL,


___`price` double NOT NULL,
`des` varchar
(200) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT
CHARSET=utf8


1、导入jar包

SSM
2、创建mybatis核心配置文件SqlMapConfig.xml

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE configuration
 3 PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
 4 "http://mybatis.org/dtd/mybatis-3-config.dtd">
 5 <configuration>
 6     <!-- 设置别名 -->
 7     <typeAliases>
 8         <typeAlias type="com.lq.model.User" alias="user"/>
 9         <typeAlias type="com.lq.model.Book" alias="book"/>
10     </typeAliases>
11     
12     <!-- 配置mapper映射文件 -->
13     <mappers>
14         <mapper resource="com/lq/model/UserMapper.xml"/>
15         <mapper resource="com/lq/model/BookMapper.xml"/>
16     </mappers>
17 </configuration>

3、创建spring配置文件applicationContext.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7                 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd  
 8                 http://www.springframework.org/schema/context  
 9                 http://www.springframework.org/schema/context/spring-context-3.2.xsd  
10                 http://www.springframework.org/schema/tx   
11                 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
12                 http://www.springframework.org/schema/aop
13                 http://www.springframework.org/schema/aop/spring-aop.xsd
14                 ">
15 
16     
17   <!-- 数据源 -->
18   <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
19       <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
20       <property name="url" value="jdbc:mysql://localhost:3306/test"></property>
21       <property name="username" value="root"></property>
22       <property name="password" value="root"></property>
23   </bean>
24   <!-- 事务管理器 -->
25   <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
26   <property name="dataSource" ref="dataSource"/>
27   </bean>
28   
29   <!-- 通知 -->
30   <tx:advice id="txAdvice" transaction-manager="txManager">
31       <!-- 配置事务属性    隔离界别    传播机制 -->
32       <tx:attributes>
33           <!-- *代表连接点匹配的所有方法      rollback-for 遇到任何异常都进行事务回滚-->
34         <tx:method name="insert*" isolation="READ_COMMITTED" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
35         <tx:method name="delete*" isolation="READ_COMMITTED" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
36         <tx:method name="update*" isolation="READ_COMMITTED" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
37         <tx:method name="select*" read-only="true" isolation="READ_COMMITTED" propagation="REQUIRED" rollback-for="java.lang.Exception"/>
38       </tx:attributes>
39   </tx:advice>
40   
41    <aop:config>
42        <!-- 连接点表达式 匹配所有的 切入点 -->
43       <aop:pointcut id="fooServiceOperation" expression="execution(* com.lq.dao.*.*(..))"/>
44       <!-- 通知加入到切入点 -->
45       <aop:advisor advice-ref="txAdvice" pointcut-ref="fooServiceOperation"/>
46       
47   </aop:config>
48   
49   
50   
51       <!-- 配置sqlSessionFactory -->
52     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
53         <!-- mybatis配置文件路径 -->
54         <property name="configLocation" value="classpath:config/SqlMapConfig.xml" />
55         <property name="dataSource" ref="dataSource" />
56     </bean>
57 
58     <!-- 配置sqlsession 产生这个实例就是通过 sqlsessionTemplate来实现的 -->
59     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
60         <constructor-arg index="0">
61             <ref bean="sqlSessionFactory" />
62         </constructor-arg>
63     </bean>
64       
65       
66       <!-- <bean id="userDao" class="com.lq.dao.UserDao">
67           <property name="sqlSession" ref="sqlSession"></property>
68       </bean> -->
69       
70       
71 </beans>

4、创建springMVC配置文件spring-servlet.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xmlns:p="http://www.springframework.org/schema/p"
 5     xmlns:mvc="http://www.springframework.org/schema/mvc"
 6     xmlns:context="http://www.springframework.org/schema/context"
 7     xsi:schemaLocation="
 8         http://www.springframework.org/schema/beans
 9         http://www.springframework.org/schema/beans/spring-beans.xsd
10         http://www.springframework.org/schema/context
11         http://www.springframework.org/schema/context/spring-context.xsd
12         http://www.springframework.org/schema/mvc
13         http://www.springframework.org/schema/mvc/spring-mvc.xsd
14         ">
15     
16     
17     <!-- 设置扫描包 -->
18     <context:component-scan base-package="com.lq"/>
19     <!-- 开启spring mvc的注解功能 -->
20     <mvc:annotation-driven />
21     
22     <!-- 视图解析器 -->
23     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
24         <!-- 视图后缀,controller中的方法返回的url字符串会添加该后缀 -->        
25         <property name="suffix" value=".jsp"/>
26         <!-- 视图前缀controller中的方法返回的url字符串会添加该前缀 -->        
27         <property name="prefix" value="/WEB-INF/pages/"/> 
28     </bean>
29     
30     
31 </beans>

5、在web.xml中配置spring监听器、前端控制器,并配置需要启动就要加载的配
置文件

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
 3   <display-name>SSM_case1_library</display-name>
 4   <listener>
 5     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
 6   </listener>
 7   <context-param>
 8     <param-name>contextConfigLocation</param-name>
 9     <param-value>    
10          classpath:config/applicationContext.xml    
11        </param-value>
12   </context-param>
13   <filter>
14     <filter-name>encodingFilter</filter-name>
15     <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
16     <init-param>
17       <param-name>encoding</param-name>
18       <param-value>utf-8</param-value>
19     </init-param>
20     <init-param>
21       <param-name>forceEncoding</param-name>
22       <param-value>true</param-value>
23     </init-param>
24   </filter>
25   <filter-mapping>
26     <filter-name>encodingFilter</filter-name>
27     <url-pattern>*.do</url-pattern>
28   </filter-mapping>
29   <servlet>
30     <servlet-name>springmvc</servlet-name>
31     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
32     <init-param>
33       <param-name>contextConfigLocation</param-name>
34       <param-value>classpath:config/spring-servlet.xml</param-value>
35     </init-param>
36     <load-on-startup>1</load-on-startup>
37   </servlet>
38   <servlet-mapping>
39     <servlet-name>springmvc</servlet-name>
40     <url-pattern>*.do</url-pattern>
41   </servlet-mapping>
42 </web-app>

6、在src下导入log4j.properties

SSM
前期工作基本完成,下面是主要代码:
1、用户登录
(1)创建模型
User

 1 package com.lq.model;
 2 
 3 public class User {
 4     private String username;
 5     private String password;
 6     private String email;
 7     private String sex;
 8     private String likes;
 9     public String getUsername() {
10         return username;
11     }
12     public void setUsername(String username) {
13         this.username = username;
14     }
15     public String getPassword() {
16         return password;
17     }
18     public void setPassword(String password) {
19         this.password = password;
20     }
21     public String getEmail() {
22         return email;
23     }
24     public void setEmail(String email) {
25         this.email = email;
26     }
27     
28     public String getSex() {
29         return sex;
30     }
31     public void setSex(String sex) {
32         this.sex = sex;
33     }
34     public String getLikes() {
35         return likes;
36     }
37     public void setLikes(String likes) {
38         this.likes = likes;
39     }
40     public User(String username, String password, String email,String sex, String likes) {
41         super();
42         this.username = username;
43         this.password = password;
44         this.email = email;
45         this.likes = likes;
46         this.sex = sex;
47     }
48     public User() {
49         super();
50     }
51     
52 }

UserMapper.xml

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE mapper
 3 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 4 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 5 <mapper namespace="com.lq.model.UserMapper">
 6     <select id="doLogin" parameterType="user" resultType="user">
 7         select * from tb_users where username=#{username} and password=#{password}
 8     </select>
 9     
10 </mapper>

(2)创建数据交互层Dao
BaseDao(这里通过BaseDao来实现sqlsessionTemplate)

 1 package com.lq.dao;
 2 
 3 import org.mybatis.spring.SqlSessionTemplate;
 4 import org.springframework.beans.factory.annotation.Autowired;
 5 
 6 public class BaseDao {
 7     @Autowired
 8     
 9     //@Qualifier("sqlSession")
10     protected  SqlSessionTemplate sqlSession;
11 
12     public SqlSessionTemplate getSqlSession() {
13         return sqlSession;
14     }
15 
16     public void setSqlSession(SqlSessionTemplate sqlSession) {
17         this.sqlSession = sqlSession;
18     }
19     
20 }

UserDao

 1 package com.lq.dao;
 2 
 3 import org.mybatis.spring.SqlSessionTemplate;
 4 import org.springframework.beans.factory.annotation.Autowired;
 5 import org.springframework.stereotype.Repository;
 6 
 7 import com.lq.model.User;
 8 
 9 @Repository
10 public class UserDao extends BaseDao {
11     
12     
13     public User doLogin(User user){
14         return (User)sqlSession.selectOne("com.lq.model.UserMapper.doLogin",user);
15     }
16 
17     
18     
19     
20 }

(3)创建业务逻辑层Service
IUService

 1 package com.lq.service;
 2 
 3 import java.util.List;
 4 
 5 import com.lq.model.User;
 6 
 7 public interface IUserService {
 8     public User doLogin(User user);
 9 
10     
11     
12 }

UserServiceImpl

 1 package com.lq.service;
 2 
 3 import org.springframework.beans.factory.annotation.Autowired;
 4 import org.springframework.stereotype.Service;
 5 
 6 import com.lq.dao.UserDao;
 7 import com.lq.model.User;
 8 
 9 @Service
10 public class UserServiceImpl implements IUserService {
11     @Autowired
12     private UserDao userDao;
13     
14     @Override
15     public User doLogin(User user) {
16         return userDao.doLogin(user);
17     }
18     
19     public UserDao getUserDao() {
20         return userDao;
21     }
22 
23     public void setUserDao(UserDao userDao) {
24         this.userDao = userDao;
25     }
26 
27     
28 
29     
30 
31 }

(4)创建控制层Controller
UserController

 1 package com.lq.controller;
 2 
 3 import java.util.List;
 4 
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Controller;
 7 import org.springframework.ui.Model;
 8 import org.springframework.web.bind.annotation.ModelAttribute;
 9 import org.springframework.web.bind.annotation.RequestMapping;
10 import org.springframework.web.servlet.ModelAndView;
11 
12 import com.lq.model.User;
13 import com.lq.service.IBookService;
14 import com.lq.service.IUserService;
15 
16 @Controller
17 @RequestMapping("/user")
18 public class UserController {
19     
20     @Autowired
21     private IUserService userService;
22     
23     @Autowired
24     private IBookService bookService;
25     
26     //实现用户登录功能
27     @RequestMapping("dologin.do")
28     public ModelAndView doLogin(ModelAndView mv,User user){
29         
30         User u=userService.doLogin(user);
31         if(u!=null){
32             List books=bookService.selectBook(null);
33             mv.addObject("books",books);
34             mv.setViewName("book");
35         }else{
36             mv.setViewName("login");
37             mv.addObject("flag","用户名或密码错误,请重新输入!");
38         }
39         return mv;
40         
41     }
42     
43     public IBookService getBookService() {
44         return bookService;
45     }
46     public void setBookService(IBookService bookService) {
47         this.bookService = bookService;
48     }
49 
50     public IUserService getUserService() {
51         return userService;
52     }
53 
54     public void setUserService(IUserService userService) {
55         this.userService = userService;
56     }
57     
58 }

前端页面部分
login.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html lang="zh-CN">
 5 <head>
 6     <meta charset="UTF-8">
 7 
 8     <link rel="stylesheet" href="css/login.css">
 9     <script type="text/javascript" src="js/jquery.min.js"></script>
10     <title>后台登陆</title>
11 </head>
12 <body>
13     <div id="login_top">
14         <div id="welcome">
15             欢迎使用郑航图书管理系统
16         </div>
17         <div id="back">
18             <a href="#">返回首页</a>&nbsp;&nbsp; | &nbsp;&nbsp;
19             <a href="#">帮助</a>
20         </div>
21     </div>
22     <div id="login_center">
23         <div id="login_area">
24             <div id="login_form">
25                 <form action="user/dologin.do" method="post">
26                     <div id="login_tip">
27                         用户登录&nbsp;&nbsp;UserLogin
28                     </div>
29                     <div><input type="text" class="username" name="username"></div>
30                     <div><input type="text" class="pwd" name="password"></div>
31                     <div id="btn_area">
32                         <input type="hidden" name="method" value="login"/>
33                         <input type="submit" name="submit" id="sub_btn" value="登&nbsp;&nbsp;录">&nbsp;&nbsp;
34                         <input type="text" class="verify">
35                         <img src="images/login/verify.png" alt="" width="80" height="40">
36                     </div>
37                 </form>
38             </div>
39         </div>
40     </div>
41     <div id="login_bottom">
42         蓝旗班版权所有2018-1028
43     </div>
44 </body>
45 </html>

book.jsp

  1 <%@ page language="java" contentType="text/html; charset=UTF-8"
  2     pageEncoding="UTF-8" import="java.util.*,com.lq.model.*" %>
  3     <%@taglib uri="http://java.sun.com/jsp/jstl/core"   prefix="c"%>
  4     
  5  <%
  6 String path = request.getContextPath();
  7 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  8 %>   
  9 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 10 <html>
 11 <head>
 12 <!-- 设置请求服务器的基准路径 -->
 13     <base href="<%=basePath%>">
 14 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 15 <title>Insert title here</title>
 16 <link rel="stylesheet" href="css/common.css">
 17    <link rel="stylesheet" href="css/main.css">
 18    <script type="text/javascript" src="js/jquery.min.js"></script>
 19    <script type="text/javascript" src="js/colResizable-1.3.min.js"></script>
 20    <script type="text/javascript" src="js/common.js"></script>
 21     <style type="text/css">
 22         .main{
 23             width: 800px;
 24             height:780px;
 25             margin:  0  auto;
 26             background: url('img/1.jpg')no-repeat;
 27         }
 28         .top{
 29             height:100px;
 30             background-color: skyblue;
 31             font-size: 90px;
 32             font-family: "隶书";
 33             line-height: 100px ;
 34         }
 35     </style>
 36 </head>
 37 <body>
 38     <div class="main" >
 39     
 40         <div class="top">
 41                 郑航图书管理系统
 42         </div>
 43         <div class="box_top"><b class="pl15">搜索图书</b></div>
 44         <!-- 搜索开始 -->
 45         <div class="box_center pt10 pb10">
 46         <form action="book/selectBook.do"  method="post">
 47               <table class="form_table" border="0" cellpadding="0" cellspacing="0">
 48                 <tbody>
 49                  <tr>
 50                       <td>图书名称</td>
 51                       <td><input type="text" name="name" value="${book.name }" class="input-text lh25" size="20"></td>
 52                      
 53                       <td>图书编号</td>
 54                       <td><input type="text" name="id" value="${book.id }" class="input-text lh25" size="20"></td>
 55                       <td>
 56                       <input type="hidden" name="method" value="query">
 57                       <input type="submit" name="button" class="btn btn82 btn_search" value="查询">
 58                       <input type="button" name="button" class="btn btn82 btn_add" value="返回">
 59                       </td>
 60                     </tr>
 61                </tbody>
 62               </table>
 63               </form>
 64               </div>
 65             <div class="box_top">
 66             <input id="add" type="button" name="button" class="btn btn82 btn_add" value="新增">
 67             </div>
 68               
 69             </div>
 70            <!-- 列表开始 -->
 71               <div id="table" class="mt10">
 72         <div class="box span10 oh">
 73               <div class="CRC" style="width: 1007px;">
 74               <div class="CRG" style="left: 32px; height: 326px;">
 75               <div class="grip"></div>
 76               <div class="CRZ" style="cursor:e-resize"></div>
 77               </div><div class="CRG" style="left: 134px; height: 326px;">
 78               <div class="grip"></div>
 79               <div class="CRZ" style="cursor:e-resize"></div>
 80               </div>
 81               <div class="CRG" style="left: 235px; height: 326px;">
 82               <div class="grip"></div>
 83               <div class="CRZ" style="cursor:e-resize"></div>
 84               </div>
 85               <div class="CRL" style="left: 1008px; height: 326px;"></div>
 86               </div>
 87               <table style="text-align: center" width="100%" border="0" cellpadding="0" cellspacing="0" class="list_table CRZ" id="CRZ0">
 88                 <tbody><tr>
 89                    
 90                    <th style="width: 50%;">图书编号</th>
 91                    <th style="width: 50%;">图书名称</th>
 92                    <th style="width: 50%;">图书作者</th>
 93                    <th style="width: 50%;">图书出版社</th>
 94                    <th style="width: 50%;">图书价格</th>
 95                    <th style="width: 90%;">操作</th>
 96                     </tr>
 97                   
 98                   <c:forEach items="${books }" var="book" begin="0" step="1" varStatus="stat">
 99                 <tr class="tr" style="background-color: rgb(255, 255, 255);">
100                     <td>${book.id }</td>
101                    <td>${book.name }</td>
102                    <td>${book.author}</td>
103                    <td>${book.publish}</td>
104                    <td> ${book.price}</td>
105                     <td>
106                        <a href="book/${book.id}/delete.do"  class="ext_btn ext_btn_submit"> 删除</a>
107                        <a href="book/${book.id}/toUpdate.do"  class="ext_btn ext_btn_submit"> 修改</a>
108                        <a href="book/${book.id}/addCart.do"  class="ext_btn ext_btn_submit"> 加入购物车</a>
109                        </td>
110                  </tr>
111                  </c:forEach>
112                </tbody></table>
113                
114                <!-- 分页 -->
115               <div class="page mt10">
116                 <div class="pagination">
117                 
118                   <ul>
119                 <c:if test="${pageindex!=null && pageindex!=1 }">
120                       <li class="first-child"><a href="BookServlet?method=queryBook&pageindex=1">首页</a></li>
121                       <li ><a href="BookServlet?method=queryBook&pageindex=${pageindex-1 }">上一页</a></li>
122                       </c:if>
123                       <c:if test="${pageindex!=null && pageindex!=totalPage}">
124                       <li><a href="BookServlet?method=queryBook&pageindex=${pageindex+1 }">下一页</a></li>
125                       <li class="last-child"><a href="BookServlet?method=queryBook&pageindex=${totalPage }">末页</a></li>
126                   </c:if>
127                   </ul>
128                 </div>
129 
130               </div>
131         </div>
132      </div>
133     </div>
134 </body>
135 <script type="text/javascript">
136     $(function(){
137         $("#add").click(function(){
138             window.location.href="book/addBook.do";
139         })
140     })
141     
142     $(function(){
143         $("#btn btn82 btn_add").click(function(){
144             window.location.href="book.jsp";
145         })
146     })
147 </script>
148 
149 </html>

2、实现图书的增删改查

(1)创建模型
Book

 1 package com.lq.model;
 2 
 3 public class Book {
 4         private String id ;
 5         private String name ;
 6         private String author;
 7         private String publish;
 8         private Double price;
 9         private String des;
10         private Integer count=1;
11         private int pageindex;
12         
13         public Book() {
14             super();
15         }
16         public String getId() {
17             return id;
18         }
19         public void setId(String id) {
20             this.id = id;
21         }
22         public String getName() {
23             return name;
24         }
25         public void setName(String name) {
26             this.name = name;
27         }
28         public String getAuthor() {
29             return author;
30         }
31         public void setAuthor(String author) {
32             this.author = author;
33         }
34         public String getPublish() {
35             return publish;
36         }
37         public void setPublish(String publish) {
38             this.publish = publish;
39         }
40         
41         public Double getPrice() {
42             return price;
43         }
44         public void setPrice(Double price) {
45             this.price = price;
46         }
47         public String getDes() {
48             return des;
49         }
50         public void setDes(String des) {
51             this.des = des;
52         }
53         
54         public Integer getCount() {
55             return count;
56         }
57         public void setCount(Integer count) {
58             this.count = count;
59         }
60         public int getPageindex() {
61             return pageindex;
62         }
63         public void setPageindex(int pageindex) {
64             this.pageindex = pageindex;
65         }
66         
67         
68         
69 }

BookMapper.xml

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE mapper
 3 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 4 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 5 <mapper namespace="com.lq.model.BookMapper">
 6     <select id="selectBook" parameterType="book" resultType="book">
 7         select * from tb_books
 8         <where>
 9             <if test="name!=null and name!=''">
10                 name like concat('%',#{name},'%')
11             </if>
12             <if test="id!=null and id!=''">
13                 id =#{id}
14             </if>
15         </where>
16     </select>
17     <delete id="deleteBookById" parameterType="string">
18         delete from tb_books where id={bookId}
19     </delete>
20     <insert id="insertBook" parameterType="book">
21         insert into tb_books values(#{id},#{name},#{author},#{publish},#{price},#{des})
22     </insert>
23     <update id="updateBook" parameterType="book">
24         update tb_books set name=#{name},author=#{author},publish=#{publish},price=#{price},des=#{des} where id=#{id}
25     </update>
26     <select id="selectBookById" parameterType="book" resultType="book">
27         select * from tb_books where id=#{bookId}
28         
29     </select>
30 </mapper>

(2)创建数据交互层Dao
BookDao

 1 package com.lq.dao;
 2 
 3 import java.util.List;
 4 
 5 import org.springframework.stereotype.Repository;
 6 
 7 import com.lq.model.Book;
 8 
 9 @Repository//把dao注入到spring容器中
10 public class BookDao extends BaseDao {
11     
12     public List selectBook(Book book){
13         return sqlSession.selectList("com.lq.model.BookMapper.selectBook",book);
14         
15     }
16 
17     public void deleteBookById(String bookId) {
18         sqlSession.delete("com.lq.model.BookMapper.deleteBookById",bookId);
19         
20     }
21 
22     public void insertBook(Book book) {
23         sqlSession.insert("com.lq.model.BookMapper.insertBook",book);
24         
25     }
26 
27     public void updateBook(Book book) {
28         sqlSession.update("com.lq.model.BookMapper.updateBook",book);
29     }
30 
31     public Book selectBookById(String bookId) {
32         return (Book)sqlSession.selectOne("com.lq.model.BookMapper.selectBookById",bookId);
33          
34     }
35 
36     
37 }

(3)创建业务逻辑层Service
IBookService

 1 package com.lq.service;
 2 
 3 
 4 import java.util.List;
 5 
 6 import com.lq.model.Book;
 7 
 8 public interface IBookService {
 9     //查询
10     public List selectBook(Book book);
11     //删除
12     public void deleteBookById(String bookId);
13     //新增
14     public void insertBook(Book book);
15     //修改
16     public void updateBook(Book book);
17     //购物车查询图书
18     public Book selectBookById(String bookId);
19 }

BookService

 1 package com.lq.service;
 2 
 3 import java.util.List;
 4 
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.stereotype.Service;
 7 
 8 import com.lq.dao.BookDao;
 9 import com.lq.model.Book;
10 
11 @Service
12 public class BookService implements IBookService{
13     
14     @Autowired
15     private BookDao bookDao;
16     
17     public BookDao getBookDao() {
18         return bookDao;
19     }
20 
21     public void setBookDao(BookDao bookDao) {
22         this.bookDao = bookDao;
23     }
24 
25     @Override
26     public List selectBook(Book book) {
27         
28         return bookDao.selectBook(book);
29     }
30 
31     @Override
32     public void deleteBookById(String bookId) {
33         bookDao.deleteBookById(bookId);
34     }
35 
36     @Override
37     public void insertBook(Book book) {
38         bookDao.insertBook(book);
39     }
40 
41     @Override
42     public void updateBook(Book book) {
43         bookDao.updateBook(book);
44     }
45 
46     @Override
47     public Book selectBookById(String bookId) {
48         return bookDao.selectBookById(bookId);
49     }
50     
51 }

(4)创建控制层Controller
BookController

  1 package com.lq.controller;
  2 
  3 import java.util.HashMap;
  4 import java.util.List;
  5 import java.util.Map;
  6 
  7 import javax.servlet.http.HttpSession;
  8 
  9 import org.springframework.beans.factory.annotation.Autowired;
 10 import org.springframework.stereotype.Controller;
 11 import org.springframework.ui.Model;
 12 import org.springframework.web.bind.annotation.PathVariable;
 13 import org.springframework.web.bind.annotation.RequestMapping;
 14 import org.springframework.web.servlet.ModelAndView;
 15 
 16 import com.lq.model.Book;
 17 import com.lq.service.IBookService;
 18 
 19 @Controller
 20 @RequestMapping("/book")
 21 public class BookController {
 22     @Autowired
 23     private IBookService bookService;
 24     
 25     @RequestMapping("/selectBook.do")
 26     public ModelAndView selectBook(ModelAndView mv,Book book){
 27         List books=bookService.selectBook(book);
 28         mv.addObject("books",books);
 29         mv.setViewName("book");
 30         return mv;
 31     }
 32     
 33     @RequestMapping("/{bookId}/delete.do")
 34     public ModelAndView deleteBook(@PathVariable("bookId")String bookId,ModelAndView mv){
 35         //删除
 36         bookService.deleteBookById(bookId);
 37         //查询所有图书
 38         List books=bookService.selectBook(null);
 39         mv.addObject("books",books);
 40         mv.setViewName("book");
 41         return mv;
 42     }
 43     
 44     @RequestMapping("/toAddBook.do")
 45     public String toAddBook(){
 46         return "addbook";
 47     }
 48     @RequestMapping("/addBook.do")
 49     public ModelAndView addBook(ModelAndView mv,Book book){
 50         //新增图书
 51         bookService.insertBook(book);
 52         //置空book对象
 53         
 54         //查询
 55         List books=bookService.selectBook(null);
 56         mv.addObject("books",books);
 57         mv.setViewName("book");
 58         return mv;
 59     }
 60     @RequestMapping("/{bookId}/toUpdate.do")
 61     public String toUpdate(@PathVariable String bookId,Model model){
 62         Book book=new Book();
 63         book.setId(bookId);
 64         List<Book>books=bookService.selectBook(book);
 65         if(books!=null){
 66             book=books.get(0);
 67         }
 68         model.addAttribute("book",book);
 69         return "updatebook";
 70     }
 71     
 72     @RequestMapping("/update.do")
 73     public ModelAndView updateBook(Book book,ModelAndView mv){
 74         //修改
 75         bookService.updateBook(book);
 76         //置空book对象
 77         
 78         //查询所有图书
 79         List books=bookService.selectBook(null);
 80         mv.addObject("books",books);
 81         mv.setViewName("book");
 82         return mv;
 83     }
 84     
 85     @RequestMapping("/{bookId}/addCart.do")
 86     public ModelAndView addCart(@PathVariable("bookId")String bookId,ModelAndView mv,HttpSession session){
 87         //添加购物车
 88         Book book=bookService.selectBookById(bookId);
 89         //先从session中获取购物车
 90         Object obj=session.getAttribute("cart");
 91         //第一次加入购物车
 92         if(obj==null){
 93             Map<String,Book>cart=new HashMap<String,Book>();
 94             //向购物车添加一本书
 95             cart.put(bookId, book);
 96             //把购物车放入session
 97             session.setAttribute("cart", cart);
 98         }else{
 99             Map<String,Book>cart=(Map<String,Book>)obj;
100             Book bk=cart.get(bookId);
101             if(bk==null){
102                 cart.put(bookId, book);
103             }else{
104                 bk.setCount(bk.getCount()+1);
105             }
106             cart.put(bookId, book);
107         }
108         mv.setViewName("cart");
109         return mv;
110     }
111 
112     public IBookService getBookService() {
113         return bookService;
114     }
115 
116     public void setBookService(IBookService bookService) {
117         this.bookService = bookService;
118     }
119     
120 }

前端页面部分
book.jsp

  1 <%@ page language="java" contentType="text/html; charset=UTF-8"
  2     pageEncoding="UTF-8" import="java.util.*,com.lq.model.*" %>
  3     <%@taglib uri="http://java.sun.com/jsp/jstl/core"   prefix="c"%>
  4     
  5  <%
  6 String path = request.getContextPath();
  7 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  8 %>   
  9 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 10 <html>
 11 <head>
 12 <!-- 设置请求服务器的基准路径 -->
 13     <base href="<%=basePath%>">
 14 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 15 <title>Insert title here</title>
 16 <link rel="stylesheet" href="css/common.css">
 17    <link rel="stylesheet" href="css/main.css">
 18    <script type="text/javascript" src="js/jquery.min.js"></script>
 19    <script type="text/javascript" src="js/colResizable-1.3.min.js"></script>
 20    <script type="text/javascript" src="js/common.js"></script>
 21     <style type="text/css">
 22         .main{
 23             width: 800px;
 24             height:780px;
 25             margin:  0  auto;
 26             background: url('img/1.jpg')no-repeat;
 27         }
 28         .top{
 29             height:100px;
 30             background-color: skyblue;
 31             font-size: 90px;
 32             font-family: "隶书";
 33             line-height: 100px ;
 34         }
 35     </style>
 36 </head>
 37 <body>
 38     <div class="main" >
 39     
 40         <div class="top">
 41                 郑航图书管理系统
 42         </div>
 43         <div class="box_top"><b class="pl15">搜索图书</b></div>
 44         <!-- 搜索开始 -->
 45         <div class="box_center pt10 pb10">
 46         <form action="book/selectBook.do"  method="post">
 47               <table class="form_table" border="0" cellpadding="0" cellspacing="0">
 48                 <tbody>
 49                  <tr>
 50                       <td>图书名称</td>
 51                       <td><input type="text" name="name" value="${book.name }" class="input-text lh25" size="20"></td>
 52                      
 53                       <td>图书编号</td>
 54                       <td><input type="text" name="id" value="${book.id }" class="input-text lh25" size="20"></td>
 55                       <td>
 56                       <input type="hidden" name="method" value="query">
 57                       <input type="submit" name="button" class="btn btn82 btn_search" value="查询">
 58                       <input type="button" name="button" class="btn btn82 btn_add" value="返回">
 59                       </td>
 60                     </tr>
 61                </tbody>
 62               </table>
 63               </form>
 64               
 65             <div class="box_top">
 66             <input id="add" type="button" name="button" class="btn btn82 btn_add" value="新增">
 67             
 68               
 69             </div>
 70            <!-- 列表开始 -->
 71               <div id="table" class="mt10">
 72         <div class="box span10 oh">
 73               <div class="CRC" style="width: 1007px;">
 74               <div class="CRG" style="left: 32px; height: 326px;">
 75               <div class="grip"></div>
 76               <div class="CRZ" style="cursor:e-resize"></div>
 77               </div><div class="CRG" style="left: 134px; height: 326px;">
 78               <div class="grip"></div>
 79               <div class="CRZ" style="cursor:e-resize"></div>
 80               </div>
 81               <div class="CRG" style="left: 235px; height: 326px;">
 82               <div class="grip"></div>
 83               <div class="CRZ" style="cursor:e-resize"></div>
 84               </div>
 85               <div class="CRL" style="left: 1008px; height: 326px;"></div>
 86               </div>
 87               <table style="text-align: center" width="100%" border="0" cellpadding="0" cellspacing="0" class="list_table CRZ" id="CRZ0">
 88                 <tbody><tr>
 89                    
 90                    <th style="width: 50%;">图书编号</th>
 91                    <th style="width: 50%;">图书名称</th>
 92                    <th style="width: 50%;">图书作者</th>
 93                    <th style="width: 50%;">图书出版社</th>
 94                    <th style="width: 50%;">图书价格</th>
 95                    <th style="width: 90%;">操作</th>
 96                     </tr>
 97                   
 98                   <c:forEach items="${books }" var="book" begin="0" step="1" varStatus="stat">
 99                 <tr class="tr" style="background-color: rgb(255, 255, 255);">
100                     <td>${book.id }</td>
101                    <td>${book.name }</td>
102                    <td>${book.author}</td>
103                    <td>${book.publish}</td>
104                    <td> ${book.price}</td>
105                     <td>
106                        <a href="book/${book.id}/delete.do"  class="ext_btn ext_btn_submit"> 删除</a>
107                        <a href="book/${book.id}/toUpdate.do"  class="ext_btn ext_btn_submit"> 修改</a>
108                        <a href="book/${book.id}/addCart.do"  class="ext_btn ext_btn_submit"> 加入购物车</a>
109                        </td>
110                  </tr>
111                  </c:forEach>
112                </tbody></table>
113                
114                <!-- 分页 -->
115               <div class="page mt10">
116                 <div class="pagination">
117                 
118                   <ul>
119                 <c:if test="${pageindex!=null && pageindex!=1 }">
120                       <li class="first-child"><a href="BookServlet?method=queryBook&pageindex=1">首页</a></li>
121                       <li ><a href="BookServlet?method=queryBook&pageindex=${pageindex-1 }">上一页</a></li>
122                       </c:if>
123                       <c:if test="${pageindex!=null && pageindex!=totalPage}">
124                       <li><a href="BookServlet?method=queryBook&pageindex=${pageindex+1 }">下一页</a></li>
125                       <li class="last-child"><a href="BookServlet?method=queryBook&pageindex=${totalPage }">末页</a></li>
126                   </c:if>
127                   </ul>
128                 </div>
129 
130               </div>
131         </div>
132      </div>
133     </div>
134 </body>
135 <script type="text/javascript">
136     $(function(){
137         $("#add").click(function(){
138             window.location.href="book/addBook.do";
139         })
140     })
141     
142     $(function(){
143         $("#btn btn82 btn_add").click(function(){
144             window.location.href="book.jsp";
145         })
146     })
147 </script>
148 
149 </html>

addbook.jsp

  1 <%@ page language="java" contentType="text/html; charset=UTF-8"
  2     pageEncoding="UTF-8"%>
  3     
  4     <%
  5 String path = request.getContextPath();
  6 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  7 %> 
  8 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  9 <html>
 10 <head>
 11 <!-- 设置请求服务器的基准路径 -->
 12     <base href="<%=basePath%>">
 13 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 14 <title>Insert title here</title>
 15 <link rel="stylesheet" href="css/common.css">
 16    <link rel="stylesheet" href="css/main.css">
 17    <script type="text/javascript" src="js/jquery.min.js"></script>
 18    <script type="text/javascript" src="js/colResizable-1.3.min.js"></script>
 19    <script type="text/javascript" src="js/common.js"></script>
 20     <style type="text/css">
 21         .main{
 22             width: 800px;
 23             height:780px;
 24             margin:  0  auto;
 25             background-image: url("img/1.jpg");
 26         }
 27         .top{
 28             height:100px;
 29             background-color: skyblue;
 30             font-size: 90px;
 31             font-family: "隶书";
 32             line-height: 100px 
 33         }
 34     </style>
 35 </head>
 36 <body >
 37     <div class="main"  style="background: url('img/1.jpg')no-repeat;">
 38     
 39         <div class="top">
 40                 郑航图书管理系统
 41         </div>
 42         <div id="forms" class="mt10">
 43         <div class="box">
 44           <div class="box_border">
 45             <div class="box_top"><b class="pl15">新增图书</b></div>
 46             <div class="box_center">
 47               <form action="book/addBook.do" method="post" class="jqtransform">
 48                <table class="form_table pt15 pb15" width="100%" border="0" cellpadding="0" cellspacing="0">
 49                  <tbody>
 50                  <tr>
 51                   <td class="td_right">图书编号:</td>
 52                   <td class=""> 
 53                     <input type="text" name="id" class="input-text lh30" size="50">
 54                   </td>
 55                   </tr>
 56                   <tr>
 57                   <td class="td_right">图书名称:</td>
 58                   <td>
 59                   <input type="text" name="name" class="input-text lh30" size="50">
 60                   </td>
 61                   </tr>
 62                   <tr>
 63                   <td class="td_right">图书作者:</td>
 64                   <td>
 65                   <input type="text" name="author" class="input-text lh30" size="50">
 66                   </td>
 67                   </tr>
 68                   <tr>
 69                   <td class="td_right">图书出版社:</td>
 70                   <td>
 71                   <input type="text" name="publish" class="input-text lh30" size="50">
 72                   </td>
 73                   </tr>
 74                   <tr>
 75                   <td class="td_right">图书价钱:</td>
 76                   <td>
 77                   <input type="text" name="price" class="input-text lh30" size="50">
 78                   </td>
 79                   </tr>
 80                   <tr>
 81                   <td class="td_right">图书描述:</td>
 82                   <td class="">
 83                     <textarea name="des"  cols="30" rows="10" class="textarea"></textarea>
 84                   </td>
 85                  </tr>
 86                  <tr>
 87                    <td class="td_right">&nbsp;</td>
 88                    <td class="">
 89                    <input type="hidden" name="method" value="insertBook">
 90                      <input id="keep" type="submit" name="button" class="btn btn82 btn_save2" value="保存"> 
 91                     <input type="reset" name="reset" class="btn btn82 btn_res" value="重置"> 
 92                    </td>
 93                  </tr>
 94                </tbody></table>
 95                </form>
 96             </div>
 97           </div>
 98         </div>
 99      </div>
100   </div>
101 </body>
102 
103 
104 </html>

updatebook.jsp

  1 <%@ page language="java" contentType="text/html; charset=UTF-8"
  2     pageEncoding="UTF-8" import="com.lq.model.*"%>
  3     
  4       <%
  5 String path = request.getContextPath();
  6 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  7 %> 
  8 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
  9 <html>
 10 <head>
 11 <!-- 设置请求服务器的基准路径 -->
 12     <base href="<%=basePath%>">
 13 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 14 <title>Insert title here</title>
 15 <link rel="stylesheet" href="css/common.css">
 16    <link rel="stylesheet" href="css/main.css">
 17    <script type="text/javascript" src="js/jquery.min.js"></script>
 18    <script type="text/javascript" src="js/colResizable-1.3.min.js"></script>
 19    <script type="text/javascript" src="js/common.js"></script>
 20     <style type="text/css">
 21         .main{
 22             width: 800px;
 23             height:780px;
 24             margin:  0  auto;
 25             background-image: url("img/1.jpg");
 26         }
 27         .top{
 28             height:100px;
 29             background-color: skyblue;
 30             font-size: 90px;
 31             font-family: "隶书";
 32             line-height: 100px 
 33         }
 34     </style>
 35 </head>
 36 <body >
 37     <div class="main"  style="background: url('img/1.jpg')no-repeat;">
 38     
 39         <div class="top">
 40                 郑航图书管理系统
 41         </div>
 42         <%
 43             Book book=(Book)request.getAttribute("book");
 44         %>
 45         <div id="forms" class="mt10">
 46         <div class="box">
 47           <div class="box_border">
 48             <div class="box_top"><b class="pl15">新增图书</b></div>
 49             <div class="box_center">
 50               <form action="book/update.do" method="post" class="jqtransform">
 51                <table class="form_table pt15 pb15" width="100%" border="0" cellpadding="0" cellspacing="0">
 52                  <tbody>
 53                  <tr>
 54                   <td class="td_right">图书编号:</td>
 55                   <td class=""> 
 56                     <input type="text" name="id" readonly class="input-text lh30" size="50"value="<%=book.getId()%>">
 57                   </td>
 58                   </tr>
 59                   <tr>
 60                   <td class="td_right">图书名称:</td>
 61                   <td>
 62                   <input type="text" name="name" class="input-text lh30" size="50"value="<%=book.getName()%>">
 63                   </td>
 64                   </tr>
 65                   <tr>
 66                   <td class="td_right">图书作者:</td>
 67                   <td>
 68                   <input type="text" name="author" class="input-text lh30" size="50"value="<%=book.getAuthor()%>">
 69                   </td>
 70                   </tr>
 71                   <tr>
 72                   <td class="td_right">图书出版社:</td>
 73                   <td>
 74                   <input type="text" name="publish" class="input-text lh30" size="50"value="<%=book.getPublish()%>">
 75                   </td>
 76                   </tr>
 77                   <tr>
 78                   <td class="td_right">图书价钱:</td>
 79                   <td>
 80                   <input type="text" name="price" class="input-text lh30" size="50"value="<%=book.getPrice()%>">
 81                   </td>
 82                   </tr>
 83                   <tr>
 84                   <td class="td_right">图书描述:</td>
 85                   <td class="">
 86                     <textarea name="des"  cols="30" rows="10" class="textarea"><%=book.getDes()%></textarea>
 87                   </td>
 88                  </tr>
 89                  <tr>
 90                    <td class="td_right">&nbsp;</td>
 91                    <td class="">
 92                    <input type="hidden" name="method" value="updateBook">
 93                      <input id="keep" type="submit" name="button" class="btn btn82 btn_save2" value="保存"> 
 94                     <input type="reset" name="reset" class="btn btn82 btn_res" value="重置"> 
 95                    </td>
 96                  </tr>
 97                </tbody></table>
 98                </form>
 99             </div>
100           </div>
101         </div>
102      </div>
103   </div>
104 </body>
105 
106 
107 </html>

cart.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8" import="java.util.*,com.lq.model.*" %>
 3     <%@taglib uri="http://java.sun.com/jsp/jstl/core"   prefix="c"%>
 4     
 5  <%
 6 String path = request.getContextPath();
 7 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
 8 %>   
 9 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
10 <html>
11 <head>
12 <!-- 设置请求服务器的基准路径 -->
13     <base href="<%=basePath%>">
14 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
15 <title>Insert title here</title>
16 <link rel="stylesheet" href="css/common.css">
17    <link rel="stylesheet" href="css/main.css">
18    <script type="text/javascript" src="js/jquery.min.js"></script>
19    <script type="text/javascript" src="js/colResizable-1.3.min.js"></script>
20    <script type="text/javascript" src="js/common.js"></script>
21     <style type="text/css">
22         .main{
23             width: 800px;
24             height:780px;
25             margin:  0  auto;
26             background: url('img/1.jpg')no-repeat;
27         }
28         .top{
29             height:100px;
30             background-color: skyblue;
31             font-size: 90px;
32             font-family: "隶书";
33             line-height: 100px ;
34         }
35     </style>
36 </head>
37 <body>
38     <div class="main" >
39     
40         <div class="top">
41                 郑航图书管理系统
42         </div>
43         
44            <!-- 列表开始 -->
45               <div id="table" class="mt10">
46         <div class="box span10 oh">
47               <div class="CRC" style="width: 1007px;">
48               <div class="CRG" style="left: 32px; height: 326px;">
49               <div class="grip"></div>
50               <div class="CRZ" style="cursor:e-resize"></div>
51               </div><div class="CRG" style="left: 134px; height: 326px;">
52               <div class="grip"></div>
53               <div class="CRZ" style="cursor:e-resize"></div>
54               </div>
55               <div class="CRG" style="left: 235px; height: 326px;">
56               <div class="grip"></div>
57               <div class="CRZ" style="cursor:e-resize"></div>
58               </div>
59               <div class="CRL" style="left: 1008px; height: 326px;"></div>
60               </div>
61               <table style="text-align: center" width="100%" border="0" cellpadding="0" cellspacing="0" class="list_table CRZ" id="CRZ0">
62                 <tbody><tr>
63                    
64                    <th style="width: 50%;">图书编号</th>
65                    <th style="width: 50%;">图书名称</th>
66                    <th style="width: 50%;">图书作者</th>
67                    <th style="width: 50%;">图书出版社</th>
68                    <th style="width: 50%;">图书价格</th>
69                    <th style="width: 50%;">数量</th>
70                    <th style="width: 70%;">操作</th>
71                     </tr>
72                   
73                   <c:forEach items="${cart }" var="book" begin="0" step="1" varStatus="stat">
74                 <tr class="tr" style="background-color: rgb(255, 255, 255);">
75                     <td>${book.value.id }</td>
76                    <td>${book.value.name }</td>
77                    <td>${book.value.author}</td>
78                    <td>${book.value.publish}</td>
79                    <td> ${book.value.price}</td>
80                    <td> ${book.value.count}</td>
81                    <td>
82                    <a href="book/${book.value.id}/delete.do">删除</a>
83                    </td>
84                    </td>
85                  </tr>
86                  </c:forEach>
87                </tbody></table>
88                
89               
90         </div>
91      </div>
92     </div>
93 </body>
94 
95 
96 </html>

所呈现的页面展示图

SSM

SSM

SSM

SSM

至此,图书管理系统的增删改查就完成了,新手不足,还有很多地方有待改善。。。。。

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