參考文檔：mybatis官方文檔

1.添加依賴

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.1</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.6</version>
</dependency>

2.添加mybatis配置文件

<?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>
<properties resource="jdbc.properties"/>
<environments default="development">
    <environment id="development">
        <transactionManager type="JDBC"/>
        <dataSource type="POOLED">
            <property name="driver" value="${driver}"/>
            <property name="url" value="${url}"/>
            <property name="username" value="${username}"/>
            <property name="password" value="${password}"/>
        </dataSource>
    </environment>
</environments>
<mappers>
    <mapper resource="com/xm/source/mybatis/dao/mapper/BlogMapper.xml"/>
</mappers>
</configuration>

3.添加jdbc配置

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://192.168.80.4:3306/MyTestDb?useUnicode=true&characterEncoding=UTF-8
username=root
password=xm123456

4.測試demo

• Blog.java

@Data
public class Blog {
    private Long id;
    private String name;
}

• BlogMapper.java

public interface BlogMapper {
    /**
     * 根據(jù)id查詢
     * @param id
     * @return
     */
    Blog queryById(Long id);
}

• BlogMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xm.source.mybatis.dao.BlogMapper">
    <select id="queryById" resultType="com.xm.source.mybatis.pojo.Blog">
    select * from blog where id = #{id}
  </select>
</mapper>

• MybatisTest.java

public class MybatisTest {

    @Test
    public void test() {
        String resource = "mybatis-config.xml";
        InputStream inputStream = null;
        SqlSession session = null;
        try {
            inputStream = Resources.getResourceAsStream(resource);
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
            session = sqlSessionFactory.openSession();
            BlogMapper mapper = session.getMapper(BlogMapper.class);
            Blog blog = mapper.queryById(1L);
            System.out.println(blog);
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            session.close();
        }
    }

}