本篇整合内容非常适合新手学习，表现层（springmvc），业务层（spring），持久层（mybatis）分别对应一个配置文件，配置文件清晰不混乱，熟练后可以自行减少配置文件个数达到同样效果O(∩_∩)O。

这里我们选择注解+xml文件的整合方式,
编写了4个配置文件，分别是：

1.springmvc的配置文件spring-mvc.xml

2.spring的配置文件spring-service.xml

3.mybatis的配置文件spring-dao.xml

4.spring整合3个框架的总配置文件applicationContext.xml（无内容，仅需要导入以上三个配置文件即可）

话不多说上项目结构图：

建库建表代码：（注意一步一步执行sql语句，否则可能出现先执行插入语句而表不存在的错误！！！）

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books` (
  `bookID` INT(10) NOT NULL AUTO_INCREMENT,
  `bookName` VARCHAR(100) NOT NULL,
  `bookCounts` INT(11) NOT NULL,
  `detail` VARCHAR(200) NOT NULL,
  PRIMARY KEY (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8

INSERT  INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES 
(1,'平凡的世界',5,'路遥'),
(2,'白夜行',10,'东野圭吾'),
(3,'百年孤独',15,'马尔克斯');

maven的pom.xml中的依赖和静态资源过滤配置

<dependencies>
        <!--Junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <!-- 数据库连接池 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

        <!--Servlet - JSP -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!--Mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.2</version>
        </dependency>

        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>

        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.8</version>
        </dependency>
    </dependencies>

<!--    maven中静态资源的过滤-->
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

建立基本结构框架：
com.pojo （实体类）
com.dao （持久层）
com.service （业务层）
com.controller （表现层）

一、Mybatis层编写

1.数据库配置文件 database.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=admin

2.编写MyBatis的核心配置文件spring-dao.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>
    
    <!--配置别名-->
    <typeAliases>
        <package name="com.pojo"/>
    </typeAliases>

    <!--绑定mapper-->
    <mappers>
        <mapper class="com.dao.BookMapper"></mapper>
    </mappers>
</configuration>

3.编写数据库对应的实体类 com.pojo.Books（使用了lombok，可自动生成一系列方法）

package com.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;
}

4.编写Dao层的 Mapper接口！

package com.dao;

import com.pojo.Books;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface BookMapper {
    

    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBook(@Param("bookId") int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBookById(@Param("bookId")int id);

    //查询全部书籍
    List<Books> queryAllBook();

    //根据名字查询
    Books queryBookByName(@Param("queryBookName") String queryBookName);
}

5.编写接口对应的 Mapper.xml 文件。需要导入MyBatis的包

<?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.dao.BookMapper">

    <!--增加一个Book-->
    <insert id="addBook" parameterType="Books">
        insert into books (bookName, bookCounts, detail)
        values (#{
    bookName},#{
    bookCounts},#{
    detail});
    </insert>

    <!--根据id删除一个Book-->
    <delete id="deleteBook" parameterType="_int">
        delete from books where bookID = #{
    bookId}
    </delete>

    <!--更新Book-->
    <update id="updateBook" parameterType="Books">
        update books set bookName=#{
    bookName},bookCounts=#{
    bookCounts},detail=#{
    detail}
        where bookID=#{
    bookID};
    </update>

    <!--根据id查询,返回一个Book-->
    <select id="queryBookById" resultType="Books">
        select * from books where bookID=#{
    bookId}
    </select>

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

    <!--根据名字查询-->
    <select id="queryBookByName" resultType="Books">
        select * from books where bookName = #{
    queryBookName}
    </select>
</mapper>

6.编写Service层的接口和实现类

接口：

package com.service;

import com.pojo.Books;

import java.util.List;

//业务层接口
public interface BookService {
    

    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBook(int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBookById(int id);

    //查询全部书籍
    List<Books> queryAllBook();

    //根据名字查询
    Books queryBookByName(String queryBookName);
}

实现类：

package com.service;

import com.dao.BookMapper;
import com.pojo.Books;

import java.util.List;

//业务层实现类
public class BookServiceImpl implements BookService {
    

    //Service调用dao层：组合dao
    private BookMapper bookMapper;

    public void setBookMapper(BookMapper bookMapper) {
    
        this.bookMapper = bookMapper;
    }

    @Override
    public int addBook(Books books) {
    
        return bookMapper.addBook(books);
    }

    @Override
    public int deleteBook(int id) {
    
        return bookMapper.deleteBook(id);
    }

    @Override
    public int updateBook(Books books) {
    
        return bookMapper.updateBook(books);
    }

    @Override
    public Books queryBookById(int id) {
    
        return bookMapper.queryBookById(id);
    }

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

    @Override
    public Books queryBookByName(String queryBookName) {
    
        return bookMapper.queryBookByName(queryBookName);
    }
}

二、Spring层编写

1.编写Spring整合Mybatis的相关的配置文件； spring-dao.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"
       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">

    <!-- 配置整合mybatis -->
    <!-- 1.关联数据库文件 -->
    <context:property-placeholder location="classpath:database.properties"/>

    <!-- 2.数据库连接池 -->
    <!--数据库连接池
dbcp  半自动化操作  不能自动连接
c3p0  自动化操作（自动的加载配置文件 并且设置到对象里面）
    -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!-- 配置连接池属性 -->
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>

        <!-- c3p0连接池的私有属性 -->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!-- 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>

    <!-- 3.配置SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 配置MyBatis全局配置文件:mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 -->
    <!--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.dao"/>
    </bean>

</beans>

2.编写Spring整合service层的相关的配置文件； spring-service.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:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 扫描service相关的bean -->
    <context:component-scan base-package="com.service" />

    <!--BookServiceImpl注入到IOC容器中-->
    <bean id="BookServiceImpl" class="com.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>

    <!-- 配置基于注解的声明式事务
		默认使用注解来管理事务行为
	 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

三、SpringMVC层编写

1.编写web.xml

<?xml version="1.0" encoding="UTF-8"?>
<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">

    <!--配置前端控制器-->
    <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>

    <!--配置解决中文乱码过滤器-->
    <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过期时间-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>

</web-app>

2.编写spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/mvc
    https://www.springframework.org/schema/mvc/spring-mvc.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.controller" />

</beans>

3.Spring配置整合文件，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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">

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

</beans>

四、Controller 和 视图层编写

1.BookController 类编写

package com.controller;

import com.pojo.Books;
import com.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.ArrayList;
import java.util.List;

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

    //controller调业务层service
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;


    @RequestMapping("/allBook")
    public String list(Model model){
                                 // //查询所有书籍
        List<Books> books = bookService.queryAllBook();
        model.addAttribute("list", books);
        return "allBook";
    }

    @RequestMapping("/toAddBook")                                   //跳转到增加书籍页面
    public String toAddPaper(){
    
        return "addBook";
    }

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

    @RequestMapping("/toUpdateBook")
    public String toUpdatePaper(Model model, int id){
                 跳转到修改书籍页面
        Books books = bookService.queryBookById(id);
        System.out.println(books);
        model.addAttribute("book", books);
        return "updateBook";
    }

    @RequestMapping("/updateBook")                                 //修改书籍
    public String updateBook(Books books, Model model){
    
        System.out.println(books);
        bookService.updateBook(books);
        return "redirect:/book/allBook";
    }

    @RequestMapping("/deleteBook")                                 //删除书籍
    public String deleteBook(int id){
    
        bookService.deleteBook(id);
        return "redirect:/book/allBook";
    }

    @RequestMapping("/queryBook")
    public String queryBookByName(String queryBookName, Model model){
    
        Books books = bookService.queryBookByName(queryBookName);
        System.out.println(books);
        List<Books> list = new ArrayList<Books>();
        list.add(books);
        model.addAttribute("list", list);
        return "allBook";
    }
}

2.编写首页 index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head>
  <title>首页</title>
  <style type="text/css">
    a {
    
      text-decoration: none;
      color: black;
      font-size: 18px;
    }
    h3 {
    
      width: 180px;
      height: 38px;
      margin: 100px auto;
      text-align: center;
      line-height: 38px;
      background: deepskyblue;
      border-radius: 4px;
    }
  </style>
</head>
<body>

<h3>
  <a href="${pageContext.request.contextPath}/book/allBook">点击进入列表页</a>
</h3>
</body>
</html>

3.书籍列表页面 allbook.jsp（使用了bootstrap）

<%@ 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="${pageContext.request.contextPath}/book/toAddBook">新增</a>
        </div>
        <div class="col-md-4 column">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">全部书籍</a>
        </div>
        <div class="col-md-4 column">
            <form action="${pageContext.request.contextPath}/book/queryBook" method="post" class="form-inline">
                <input type="text" placeholder="请输入要查询书籍的名称" name="queryBookName" class="form-control">
                <input type="submit" value="查询">
            </form>
        </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>书籍名字</th>
                    <th>书籍数量</th>
                    <th>书籍详情</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/toUpdateBook?id=${book.getBookID()}">更改</a> |
                            <a href="${pageContext.request.contextPath}/book/deleteBook?id=${book.getBookID()}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>

4.添加书籍页面：addBook.jsp（使用了bootstrap）

<%@ 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>
</body>

5.修改书籍页面 updateBook.jsp（使用了bootstrap）

<%@ 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>修改书籍</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
        <input type="hidden" name="bookID" value="${book.getBookID()}">
        书籍名称：<input type="text" name="bookName" value="${book.getBookName()}"><br><br><br>
        书籍数量：<input type="text" name="bookCounts" value="${book.getBookCounts()}"><br><br><br>
        书籍详情：<input type="text" name="detail" value="${book.getDetail()}"><br><br><br>
        <input type="submit" value="修改">
    </form>

</div>
</body>

项目到此全部结束！配置Tomcat，进行运行，以下为实际页面：