方式一
先在项目的pop.xml文件下添加相关依赖（spring-wewbmvc、aspectjrt、aspectjweaver、junit、mysql-connector-java、mybatis、spring-jdbc、mybatis-spring） <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.7</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.21</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.5</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.2.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.2.9.RELEASE</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.9.6</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.4</version> <scope>runtime</scope> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.5</version> </dependency> </dependencies>注：若对应接口的xml文件未放置在resources文件夹下，还需要添加以下内容，使启动时可以访问其他目录下的xml文件。
<build> <resources> <resource> <directory> src/main/resources </directory> <includes> <include> **/*.properties </include> <include> **/*.xml </include> </includes> <filtering>true</filtering> </resource> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>true</filtering> </resource> </resources> </build> 在项目的resources包下，创建spring-dao.xml文件（创建spring提供的datasource来获取数据库的数据源、通过数据源获取sqlsessionfactory、再通过sqlsessionfactory获取到sqlsessionTemplate、注册对应的接口等）和mybatis.xml（设置日志、起别名、指定接口对应的xml问价位置等） 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" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/spring_mybatis?useSSL=true&useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="configLocation" value="classpath:mybatis-config.xml"/> <!--<property name="mapperLocations" value="classpath:com/whut/Mapper/*.xml"/>--> </bean> <bean id="sqlsession" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory"/> </bean> <bean id="userMapper" class="com.whut.Mapper.UserMapperImpl"> <property name="sqlsession" ref="sqlsession"/> </bean> </beans> mybatis-config.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> <settings> <setting name="logImpl" value="STDOUT_LOGGING"/> <setting name="cacheEnabled" value="true"/> </settings> <typeAliases> <package name="com.whut.pojo"/> </typeAliases> <mappers> <mapper resource="com/whut/Mapper/UserMapper.xml"/> </mappers> </configuration> 在Mapper(接口包)下编写对应的xml文件（需要在mybatis-config.xml中指定资源位置）和接口的实现类 -UserMapper接口 public interface UserMapper { List<User> select(); } -UserMapper的实现类 public class UserMapperImpl implements UserMapper { private SqlSessionTemplate sqlsession;//在spring_dao.xml中通过SqlSessionFactory获取 public void setSqlsession(SqlSessionTemplate sqlsession) { this.sqlsession = sqlsession; } public List<User> select() { UserMapper userMapper = sqlsession.getMapper(UserMapper.class); return userMapper.select(); } } -UserMapper对应的xml文件 <mapper namespace="com.whut.Mapper.UserMapper"> <select id="select" resultType="com.whut.pojo.User"> select * from user; </select> </mapper> 编写测试类进行测试 @Test public void testselect(){ ApplicationContext context = new ClassPathXmlApplicationContext("spring_dao.xml"); UserMapper userMapper = context.getBean("userMapper",UserMapper.class); List<User> userList = userMapper.select(); for (User user : userList) { System.out.println(user); } }方式二 是对方式一的简化，方式一在获取sqlsession时需要先在实现类中定义私有变量sqlsession，然后设置set方法，再通过spring-dap.xml中注入来获取到sqlsession。 方式二直接在创建实现类时通过继承SqlsessionDaoSupport来获取到sqlsession方法（getsession()）,然后再spring-dao.xml中注入，直接通过sqlsessionfactory来得到sqlsession对象！
方式二下的接口实现类写法 public class UserMapperImpl2 extends SqlSessionDaoSupport implements UserMapper{ public List<User> select() { return getSqlSession().getMapper(UserMapper.class).select(); } }