SSM学习成果总结，图书管理系统进行三层整合

一：先看一下效果图

二：目录结构

 三：pojo

 package com.zh.pojo;

 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;

 @Data
 @AllArgsConstructor
 @NoArgsConstructor
 public class Books {
     private  int bookID;
     private String bookName;
     private int bookCounts;
     private String detail;
 }

四：dao

 package com.zh.dao;

 import com.zh.pojo.Books;
 import java.util.List;

 public interface BookMapper {
     void addBooks(Books books);

     List<Books> queryAllBook();

     Books queryBookById(int id);
     void updateBooks(Books books);
     void deleteBooks(int id);

 }

 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE mapper
         PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

 <mapper namespace = "com.zh.dao.BookMapper">
     <!--增加一个Book-->
     <insert id="addBooks" parameterType="Books">
         insert into ssmbuild.books(bookName,bookCounts,detail)
         values (#{bookName}, #{bookCounts}, #{detail})
     </insert>

     <!--查询全部Book-->
     <select id="queryAllBook" resultType="books">
         SELECT * from ssmbuild.books
     </select>

     <!--更新Book信息-->
     <select id="updateBooks" parameterType="Books">
        update ssmbuild.books
         set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}
         where bookID = #{bookID}
     </select>
     <!--通过Id查询Book信息-->
     <select id="queryBookById"  resultType="Books">
         select  * from books where bookID = #{bookID}
     </select>

     <!--删除书籍信息-->
     <delete id="deleteBooks" parameterType="int">
         delete from books where bookID=#{bookID}
     </delete>

 </mapper>

五：service

 package com.zh.service;

 import com.zh.pojo.Books;

 import java.util.List;

 public interface BookService {
     void addBooks(Books books);
     List<Books> queryAllBook();

     Books queryBookById(int id);
     void updateBooks(Books books);

     void deleteBooks(int id);
 }

  @Service("bookServiceImpl")
 public class BookServiceImpl implements BookService {

     @Autowired
     @Qualifier("bookMapper")
     private BookMapper bookMapper;
     public void addBooks(Books books) {
         bookMapper.addBooks(books);
     }

     public List<Books> queryAllBook() {
         return bookMapper.queryAllBook();
     }

     public Books queryBookById(int id){
         Books books = bookMapper.queryBookById(id);
         return books;
     }

     public  void updateBooks(Books books){
          bookMapper.updateBooks(books);
     }

     public void deleteBooks(int id) {
         bookMapper.deleteBooks(id);
     }

 }

六：controller

 @Controller
 @RequestMapping("/book")
 public class BookController {

         @Autowired
         @Qualifier("bookServiceImpl")
         private BookService bookService;

         @RequestMapping("/allBook")
         public String list(Model model) {
             List<Books> list = bookService.queryAllBook();
             model.addAttribute("list", list);
             return "allbook";
         }

     @RequestMapping("/toAddBook")
     public String toAddPaper() {
         return "addBook";
     }

     @RequestMapping("/addBook")
     public String addPaper(Books books) {
         System.out.println(books);
         bookService.addBooks(books);
         return "redirect:/book/allBook";
     }

     @RequestMapping("/toUpdateBooks")
     public  String toUpdatePaper(Model model ,  int id){
         Books books = bookService.queryBookById(id);
         System.out.println(books);
         model.addAttribute("books", books);
         return "updateBooks";
     }

     @RequestMapping("/updateBooks")
     public String updatePaper(Model model , Books books){
         System.out.println("lalala"+books);
         bookService.updateBooks(books);
         Books books1 = bookService.queryBookById(books.getBookID());
         model.addAttribute("book", books1);
         return "redirect:/book/allBook";
     }

     @RequestMapping("/delete/{bookID}")
     public String deleteBooks(@PathVariable("bookID") int id ){
             bookService.deleteBooks(id);
             return "redirect:/book/allBook";
     }
 }

七：resources

7.1:整合mybatis

 <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"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

 <!--&lt;!&ndash;通过原始注解的方式需要对接口实现Impl的编写&ndash;&gt;
 <context:component-scan base-package="com.zh.dao"></context:component-scan>-->

     <!--配置数据源-->
     <context:property-placeholder location="classpath:database.properties"></context:property-placeholder>
     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <property name="driverClass" value="${jdbc.driverClass}"/>
         <property name="user" value="${jdbc.user}"/>
         <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/>
         <property name="password" value="${jdbc.password}"/>
         <!--定义连接池最大的容量-->
         <property name="maxPoolSize" value="${jdbc.maxPoolSize}"/>
         <!--定义连接池初始的大小-->
         <property name="initialPoolSize" value="${jdbc.initPoolSize}"/>
         <!-- 关闭连接后不自动commit -->
         <property name="autoCommitOnClose" value="false"/>
         <!-- 获取连接超时时间 -->
         <property name="checkoutTimeout" value="10000"/>
         <!-- 当获取连接失败重试次数 -->
         <property name="acquireRetryAttempts" value="2"/>
     </bean>

     <!--配置sqlSessionFactory对象-->
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
         <property name="dataSource" ref="dataSource"/>
         <property name="configLocation" value="classpath:mybatis-config.xml"/>
     </bean>

     <!--通过这种方式不用写Impl的实现类-->
     <!--配置扫描Dao的接口包(用这种方式dao层连注解都不用写)-->
     <!--解释 ： https://www.cnblogs.com/jpfss/p/7799806.html-->
     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
         <!-- 注入sqlSessionFactory -->
         <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
         <!-- 给出需要扫描Dao接口包 -->
         <property name="basePackage" value="com.zh.dao"/>
     </bean>

 </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>

     <typeAliases>
         <package name="com.zh.pojo"></package>
     </typeAliases>

     <mappers>
         <mapper resource="com/zh/dao/BookMapper.xml"/>
     </mappers>
 </configuration>

7.2:整合service

 <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"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

     <context:component-scan base-package="com.zh.service"></context:component-scan>
    <!-- <bean id="BookServiceImpl" class="com.zh.service.BookServiceImpl">
         <property name="bookMapper" ref="bookMapper"/>
     </bean>-->

     <!-- 配置事务管理器 -->
     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <!-- 注入数据库连接池 -->
         <property name="dataSource" ref="dataSource" />
     </bean>

 </beans>

7.3整合controller

 <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.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

     <!-- 配置SpringMVC -->
     <!-- 1.开启SpringMVC注解驱动 -->
     <mvc:annotation-driven />
     <!-- 2.静态资源默认servlet配置-->
     <mvc:default-servlet-handler/>

     <!-- 3.配置jsp 显示ViewResolver视图解析器 -->
     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
         <property name="prefix" value="/WEB-INF/jsp/" />
         <property name="suffix" value=".jsp" />
     </bean>

     <!-- 4.扫描web相关的bean -->
     <context:component-scan base-package="com.zh.controller" />

 </beans>

八：三层整合

 <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

     <import resource="spring-dao.xml"/>
     <import resource="spring-service.xml"/>
     <import resource="spring-mvc.xml"/>

 </beans>

九：jsp部分

 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 <html>
 <head>
     <title>书籍列表</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <!-- 引入 Bootstrap -->
     <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
 </head>
 <body>

 <div class="container">

     <div class="row clearfix">
         <div class="col-md-12 column">
             <div class="page-header">
                 <h1>
                     <small>书籍列表 —— 显示所有书籍</small>
                 </h1>
             </div>
         </div>
     </div>

     <div class="row">
         <div class="col-md-4 column">
             <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增</a>
         </div>
     </div>

     <div class="row clearfix">
         <div class="col-md-12 column">
             <table class="table table-hover table-striped">
                 <thead>
                 <tr>
                     <th>书籍编号</th>
                     <th>书籍名</th>
                     <th>数量</th>
                     <th>书籍介绍</th>
                     <th>操作</th>
                 </tr>
                 </thead>

                 <tbody>
                 <c:forEach var="book" items="${requestScope.get('list')}">
                     <tr>
                         <td>${book.getBookID()}</td>
                         <td>${book.getBookName()}</td>
                         <td>${book.getBookCounts()}</td>
                         <td>${book.getDetail()}</td>
                         <td>
                             <a href="${pageContext.request.contextPath}/book/toUpdateBooks?id=${book.getBookID()}">更改</a> |
                             <a href="${pageContext.request.contextPath}/book/delete/${book.getBookID()}">删除</a>
                         </td>
                     </tr>
                 </c:forEach>
                 </tbody>
             </table>
         </div>
     </div>
 </div>

 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
 <%@ page contentType="text/html;charset=UTF-8" language="java" %>

 <html>
 <head>
     <title>新增书籍</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <!-- 引入 Bootstrap -->
     <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
 </head>
 <body>
 <div class="container">

     <div class="row clearfix">
         <div class="col-md-12 column">
             <div class="page-header">
                 <h1>
                     <small>新增书籍</small>
                 </h1>
             </div>
         </div>
     </div>
     <form action="${pageContext.request.contextPath}/book/addBook" method="post">
         书籍名称：<input type="text" name="bookName"><br><br><br>
         书籍数量：<input type="text" name="bookCounts"><br><br><br>
         书籍详情：<input type="text" name="detail"><br><br><br>
         <input type="submit" value="添加">
     </form>

 </div>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改信息</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">

    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>修改信息</small>
                </h1>
            </div>
        </div>
    </div>

    <form action="${pageContext.request.contextPath}/book/updateBooks" method="post">
        <input type="hidden" name="bookID" value="${books.getBookID()}"/>
        书籍名称：<input type="text" name="bookName" value="${books.getBookName()}"/>
        书籍数量：<input type="text" name="bookCounts" value="${books.getBookCounts()}"/>
        书籍详情：<input type="text" name="detail" value="${books.getDetail() }"/>
        <input type="submit" value="提交"/>
    </form>

</div>

十：web.xml

 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
          version="4.0">
     <servlet>
         <servlet-name>DispatcherServlet</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <init-param>
             <param-name>contextConfigLocation</param-name>
             <param-value>classpath:applicationContext.xml</param-value>
         </init-param>
         <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet-mapping>
         <servlet-name>DispatcherServlet</servlet-name>
         <url-pattern>/</url-pattern>
     </servlet-mapping>

     <!--encodingFilter-->
     <filter>
         <filter-name>encodingFilter</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>
     </filter>
     <filter-mapping>
         <filter-name>encodingFilter</filter-name>
         <url-pattern>/*</url-pattern>
     </filter-mapping>

     <session-config>
         <session-timeout>15</session-timeout>
     </session-config>
 </web-app>