SpringBoot整合junit与Mybatis流程详解

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = SpringConfig.class)
public class UserServiceTest {
    @Autowired
    private BookService bookService;
    @Test
    public void testSave(){
        bookService.save();
    }
}

public interface BookService {
    public void save();
}

@Service
public class BookServiceImpl implements BookService {
    @Override
    public void save() {
        System.out.println("book service is running ...");
    }
}

@SpringBootTest
class Springboot07TestApplicationTests {
    @Autowired
    private BookService bookService;
    @Test
    public void save() {
        bookService.save();
    }
}

@Configuration
@ComponentScan("com.itheima")
@PropertySource("classpath:jdbc.properties")
@Import({JdbcConfig.class,MyBatisConfig.class})
public class SpringConfig {
}

public class JdbcConfig {
    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.username}")
    private String userName;
    @Value("${jdbc.password}")
    private String password;
    @Bean
    public DataSource getDataSource(){
        DruidDataSource ds = new DruidDataSource();
        ds.setDriverClassName(driver);
        ds.setUrl(url);
        ds.setUsername(userName);
        ds.setPassword(password);
        return ds;
    }
}

@Bean
public MapperScannerConfigurer getMapperScannerConfigurer(){
    MapperScannerConfigurer msc = new MapperScannerConfigurer();
    msc.setBasePackage("com.itheima.dao");
    return msc;
}
@Bean
public SqlSessionFactoryBean getSqlSessionFactoryBean(DataSource dataSource){
    SqlSessionFactoryBean ssfb = new SqlSessionFactoryBean();
    ssfb.setTypeAliasesPackage("com.itheima.domain");
    ssfb.setDataSource(dataSource);
    return ssfb;
}

public class Book {
    private Integer id;
    private String name;
    private String type;
    private String description;
    //setter and  getter
    //toString
}

public interface BookDao {
    @Select("select * from tbl_book where id = #{id}")
    public Book getById(Integer id);
}

@SpringBootTest
class Springboot08MybatisApplicationTests {
	@Autowired
	private BookDao bookDao;
	@Test
	void testGetById() {
		Book book = bookDao.getById(1);
		System.out.println(book);
	}
}

@Mapper
public interface BookDao {
    @Select("select * from tbl_book where id = #{id}")
    public Book getById(Integer id);
}

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.16</version>
</dependency>