1.引入 MyBatis Starter 依赖
<dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.1</version> </dependency>
2.数据库建表（tx_person）
3.创建实体类Person
private int pid; private String pname; private String addr; private int gender; private Date birth;
4.创建mapper
@Mapper public interface PersonMapper { @Select("select * from tx_person") List<Person> getPersons(); @Select("select * from tx_person where pid = #{id}") Person getPersonById(int id); @Options(useGeneratedKeys = true, keyProperty = "pid") @Insert("insert into tx_person(pid, pname, addr, gender, birth) " + "values(#{pid}, #{pname}, #{addr}, #{gender}, #{birth})") void insert(Person person); @Delete("delete from tx_person where pid = #{id}") void update(int id); }
5.解决驼峰 & 下划线映射问题
创建MybatisConfig
@Configuration
public class MybatisConfig {
@Configuration public class MybatisConfig { @Bean public ConfigurationCustomizer getCustomizer() { return new ConfigurationCustomizer() { @Override public void customize(org.apache.ibatis.session.Configuration configuration) { configuration.setMapUnderscoreToCamelCase(true); } }; } }
6.创建测试类SpringBootMybatisTest
@SpringBootTest @RunWith(SpringRunner.class) public class SpringbootMybatisTest { @Autowired TxPersonMapper txPersonMapper; @Autowired ApplicationContext context; @Test public void contextLoads() { DataSource bean = context.getBean(DataSource.class); System.out.println(bean); } @Test public void testMybatis() { TxPerson p = txPersonMapper.getPersonById(1); System.out.println(p); } }
7.启动测试类
