步骤：

1. 导入相关的包
   • junit
   • mybatis
   • mysql数据库
   • spring相关
   • aop织入
   • mybatis-spring【new】

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <!--spring-jdbc：Spring操作数据库-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <!--aop织入-->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.13</version>
        </dependency>
        <!---->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.2</version>
        </dependency>
    </dependencies>

2. 编写配置文件
3. 测试

(一)、回忆mybatis

1. 编写实体类
2. 编写核心配置文件
3. 编写接口
4. 编写接口对应的Mapper.xml
5. 在核心配置文件中注册Mapper.xml
6. 测试

(二)、整合Mybatis方式一

官方文档：mybatis-spring

1. 编写数据源配置

    <!--DataSource：使用Spring的数据源替换MyBatis的配置 c3p0  dbcp  druid
    使用Spring提供的JDBC：org.springframework.jdbc.datasource
    -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=UTF-8&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeCode=false&amp;serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="20201123"/>
    </bean>

2. sqlSessionFactory

    <!--sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!--绑定MyBatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="mapperLocations" value="classpath:com/vigil/mapper/*.xml"></property>
    </bean>

3. sqlSessionTemplate

    <!--SqlSessionTemplate：SqlSession-->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <!--只能使用构造器注入sqlSessionFactory，因为该类没有set方法-->
        <constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>
    </bean>

前三个配置在一个spring.xml 文件中（作为一个工具配置），实现获得数据源、sqlSessionFactory、sqlSession这三类资源的配置文件

4. 需要给接口加实现类【】

public class UserMapperImpl implements UserMapper {
    // 在原来所有的操作：都使用sqlSession来执行
    // 而现在都使用SqlSessionTemplate
    private SqlSessionTemplate sqlSession;

    public void setSqlSession(SqlSessionTemplate sqlSession) {
        this.sqlSession = sqlSession;
    }
    public List<User> getUserList() {
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        return mapper.getUserList();
    }
}

5. 将实现类注入Spring中

在Spring总配置文件applicationContext.xml 中 import 上面配置资源的xml，注入该实现类

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

    <!---->
    <bean id="userMapper" class="com.vigil.mapper.UserMapperImpl">
        <property name="sqlSession" ref="sqlSession"></property>
    </bean>

6. 测试（获得Spring容器，获取bean，调用方法）

public void test() {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapper",UserMapper.class);
        List<User> userList = userMapper.getUserList();
        for (User user : userList) {
            System.out.println(user);
        }
    }

(三)、整合Mybatis方式二

• 实现类

继承SqlSessionDaoSupport，直接获取SqlSession的对象

public class UserMapperImpl2 extends SqlSessionDaoSupport implements UserMapper {
    public List<User> getUserList() {
        return getSqlSession().getMapper(UserMapper.class).getUserList();
    }
}

• 注入spring

    <bean id="userMapper2" class="com.vigil.mapper.UserMapperImpl2">
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>

• 测试

(四)、总结工具配置

<?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">

    <!--DataSource：使用Spring的数据源替换MyBatis的配置 c3p0  dbcp  druid
    使用Spring提供的JDBC：org.springframework.jdbc.datasource
    -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=UTF-8&amp;useJDBCCompliantTimezoneShift=true&amp;useLegacyDatetimeCode=false&amp;serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="20201123"/>
    </bean>

    <!--sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!--绑定MyBatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="mapperLocations" value="classpath:com/vigil/mapper/*.xml"></property>
    </bean>

    <!--SqlSessionTemplate：SqlSession-->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <!--只能使用构造器注入sqlSessionFactory，因为该类没有set方法-->
        <constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>
    </bean>
</beans>