SpringBoot+MybatisPlus--使用

1、在entity包下面创建数据实体类，添加注解@Data,如果和数据库名字不一样的话，还需要+@TableField注解。字段名字不一样也需要添加此注解

@TableName(value = "user")
public class AnnotationUser4Bean {
   @TableId(value = "user_id", type = IdType.AUTO)
   private String userId;
    
   @TableField("name")
   private String name;
    
   @TableField("sex")
   private String sex;
    
   @TableField("age")
   private Integer age;
}

2，创建Mapper接口，对应刚创建的实体类，加@Mapper注解

@Mapper

public interface AddressBookMapper extends BaseMapper<AddressBook> {
}

3、创建Service接口

public interface AddressBookService extends IService<AddressBook> {
}

4、创建Service实现类，需要加@Service注解

@Service
public class AddressBookServiceImpl extends ServiceImpl<AddressBookMapper, AddressBook> implements AddressBookService {
}

5、创建对应的Controller类

@Slf4j
@RestController
@RequestMapping("/addressBook")
public class AddressBookController {
    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrdersService ordersService;
}