springboot mybatis 读写access数据

1、创建项目

用到的技术 java8 、springboot2.7.11、maven

2、项目结构

3、代码 

maven引入依赖jar

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>net.sf.ucanaccess</groupId>
            <artifactId>ucanaccess</artifactId>
            <version>4.0.4</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.5.3</version>
        </dependency>
    </dependencies>

 创建用户实体

@Data
public class User {

    private Integer id;

    private Integer userId;

    private String username;

}

 创建仓储接口

@Mapper
public interface UserRepository extends BaseMapper<User> {

}

创建service

public interface UserService extends IService<User> {

    List<User> findUserAll();
}

@Service
public class UserServiceImpl extends ServiceImpl<UserRepository, User> implements UserService {

    @Override
    public List<User> findUserAll() {
        return this.list();
    }
}

测试代码

@Slf4j
@SpringBootTest
public class UserServiceTest {

    @Autowired
    private UserService userService;

    @Test
    public void testFindUserAll() throws Exception {
        List<User> list = userService.findUserAll();
        log.info("-----------> testFindUserAll list is : {} ", list);
    }

    @Test
    public void testInsert() throws SQLException {
        User user = new User();
        user.setUserId(3);
        user.setUsername("张无忌");
        boolean flag = userService.save(user);
        log.info("-----------> testInsert flag is : {} ", flag);
    }
}

上面都是关键代码。

完整代码查看 对应的分支是 mybatis