1. Spring程序配置文件

beans.xml：/resources

  	<!--注册一个Bean-->
    <bean id="hello" class="com.kuang.pojo.Hello">
        <property name="name" value="Spring"/>
    </bean>

//使用Bean
ApplicationContext context = new ClassPathXmlApplicationContext("bean.xml");
//getBean : 参数即为spring配置文件中bean的id；
//就是将容器中“hello”这个JavaBean拿出来，注入到Hello hello中；
Hello hello = (Hello) context.getBean("hello");
hello.show();

2. Mybatis程序配置文件

mybatis-config.xml：/resources
mapper.xml：/resources/mapper
核心配置文件mybatis-config.xml需要注册mapper映射文件

<!--configuration核心配置文件mybatis-config.xml-->
<configuration>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/test?userSSL=true&amp;useUnicode=true&amp;characterEncoding=UTF-8&amp;serverTimezone=UTC"/>
                <property name="username" value="root"/>
                <property name="password" value="ily******"/>
            </dataSource>
        </environment>
    </environments>

	<!--在核心配置文件mybatis-config.xml注册Mapper.xml文件-->
	<mappers>
        <mapper resource="Dao/UserDao.xml"/>
    </mappers>

</configuration>

<!--mapper.xml文件-->
<mapper namespace="Dao.UserDao">
    <select id="getUserList" resultType="Pojo.User">
    select * from USER
  </select>
</mapper>

//使用配置文件执行mapper
    @Test
    public void test(){

        //1.获取SqlSession对象
        SqlSession sqlSession = MybatisUtils.getSqlSession();
        //2.执行SQL
        UserDao userDao = sqlSession.getMapper(UserDao.class);
        List<User> userList = userDao.getUserList();
        for (User user : userList) {
            System.out.println(user);
        }

        //关闭sqlSession
        sqlSession.close();
    }

3. Spring-Mybatis程序配置文件

beans.xml：/resources
mybatis-config.xml：/resources
mapper.xml：/resources/mapper
beans.xml需要注册mapper映射文件

<?xml version="1.0" encoding="GBK"?>
<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
        https://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
    我们这里使用Spring提供的JDBC：-->
    <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?useSSL=false&amp;useUnicode=true&amp;characterEncoding=UTF-8"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
    </bean>

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

    <!--SqlSessionTemplate:就是我们使用的sqlSession-->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <!--只能使用构造器注入sqlSessionFactory，因为它没有set方法-->
        <constructor-arg index="0" ref="sqlSessionFactory" />
    </bean>
    
    <bean id="userMapper" class="com.kuang.mapper.UserMapperImpl">
        <property name="sqlSession" ref="sqlSession"/>
    </bean>
</beans>

//测试
    @Test
    public void test () throws IOException {

        ApplicationContext context = new ClassPathXmlApplicationContext("spring-dao.xml");
        
        UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
        for (User user : userMapper.selectUser()) {
            System.out.println(user);
        }
    }

4. SpringBoot-Mybatis程序配置文件

application.yml（就是mybatis-config.xml核心配置文件）
- mapper.xml：/resources/mapper
application.yml需要注册mapper映射文件

spring:
  datasource:
    name: pro_man_sys_db
    url: jdbc:mysql://localhost:3306/pro_man_sys_db?serverTimezone=UTC
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver
  resources:
    static-locations: classpath:/static,classpath:/resources,file:/root/uploadFiles

mybatis:
  type-aliases-package: com.shiliuzi.model
  mapper-locations: classpath:mapper/*.xml

<?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">
<!--configuration core file-->
<mapper namespace="com.guo.mapper.UserMapper">

    <select id="queryUserList" resultType="User">
    </select>
</mapper>

在这里插入图片描述

//使用：直接创建一个controller层接口，使用http访问
@RestController
public class UserController {

    @Autowired
    private UserMapper userMapper;

    @RequestMapping("/list")
    public List<User> List(){
        return userMapper.queryUserList();
    }
}