整体步骤：

1. 编写数据源配置
2. sqlSessionFactory
3. sqlSessionTemplate
4. 需要给接口添加实现类【UserMapperImpl.java】
5. 测试

环境准备：

实体类：User.java

@Data
public class User {
    private int id;
    private String name;
    private String pwd;
}

接口：UserMapper.java

public interface UserMapper {
    public List<User> selectUser();
}

接口配置文件：UserMapper.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">
<mapper namespace="com.kuang.mapper.UserMapper">
    <select id="selectUser" resultType="user">
        select * from mybatis.user;
    </select>
</mapper>

mybatis配置文件：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>
    <typeAliases>
        <package name="com.kuang.pojo"/>
    </typeAliases>
</configuration>

以上~~~~~~
编写Spring bean配置文件：

<?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:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/aop
                           http://www.springframework.org/schema/aop/spring-aop.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 ：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?useSSL=true&amp;useUnicode=true&amp;characterEncoding=utf8"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <!--sqlSessionFactory-->
    <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="com/kuang/mapper/*.xml"/>
    </bean>
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <!--这里由于SqlSessionTemplate没有set方法，所以需要编写一个实现类，利用set方法将其赋值-->
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>
</beans>

编写applicationContext.xml将上面的spring-dao.xml导入

<?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:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/aop
                           http://www.springframework.org/schema/aop/spring-aop.xsd">
    <import resource="spring-dao.xml"/>

    <bean id="userMapperImpl" class="com.kuang.mapper.UserMapperImpl">
        <property name="sqlSessionTemplate" ref="sqlSession"/>
    </bean>
</beans>

由于SqlSessionTemplate没有set方法，所以需要编写UserMapperImpl实现类将其赋值，代码如下：UserMapperImpl.java

public class UserMapperImpl implements UserMapper{
    private SqlSessionTemplate sqlSessionTemplate;

    public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
        this.sqlSessionTemplate = sqlSessionTemplate;
    }

    @Override
    public List<User> selectUser() {
        UserMapper mapper = sqlSessionTemplate.getMapper(UserMapper.class);
        return mapper.selectUser();
    }
}

基本完成，进行测试：MyTest.java

@Test
    public void test1(){
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserMapper userMapper = context.getBean("userMapperImpl", UserMapper.class);
        List<User> users = userMapper.selectUser();
        for (User user : users) {
            System.out.println(user);
        }
    }

标签：xml,sqlSessionTemplate,Spring,UserMapper,private,学习,MyBatis,java,public
来源： https://www.cnblogs.com/xudong-he/p/15002735.html