帮我写一个springboot的对AdvertisementEntity的基于mybatis的增删改查，查是对字段type的，的serviceImpl类的实现方法和用controller层调用，其中AdvertisementEntity包含字段有Long id;String url;String type;String second;LocalDateTime createTime;LocalDateTime updateTime;int step;String enable;int advertisementType;String jumpUrl;。要求返回格式为json，数据库是MySQL

好的，我可以回答这个问题。以下是基于Mybatis的AdvertisementEntity增删改查的serviceImpl类的实现方法和用controller层调用的示例代码：

AdvertisementServiceImpl.java

@Service
public class AdvertisementServiceImpl implements AdvertisementService {

    @Autowired
    private AdvertisementMapper advertisementMapper;

    @Override
    public AdvertisementEntity getAdvertisementByType(String type) {
        return advertisementMapper.getAdvertisementByType(type);
    }

    @Override
    public void addAdvertisement(AdvertisementEntity advertisement) {
        advertisementMapper.addAdvertisement(advertisement);
    }

    @Override
    public void updateAdvertisement(AdvertisementEntity advertisement) {
        advertisementMapper.updateAdvertisement(advertisement);
    }

    @Override
    public void deleteAdvertisement(Long id) {
        advertisementMapper.deleteAdvertisement(id);
    }
}

AdvertisementController.java

@RestController
@RequestMapping("/advertisement")
public class AdvertisementController {

    @Autowired
    private AdvertisementService advertisementService;

    @GetMapping("/{type}")
    public AdvertisementEntity getAdvertisementByType(@PathVariable String type) {
        return advertisementService.getAdvertisementByType(type);
    }

    @PostMapping
    public void addAdvertisement(@RequestBody AdvertisementEntity advertisement) {
        advertisementService.addAdvertisement(advertisement);
    }

    @PutMapping
    public void updateAdvertisement(@RequestBody AdvertisementEntity advertisement) {
        advertisementService.updateAdvertisement(advertisement);
    }

    @DeleteMapping("/{id}")
    public void deleteAdvertisement(@PathVariable Long id) {
        advertisementService.deleteAdvertisement(id);
    }
}

以上代码实现了对AdvertisementEntity的基于Mybatis的增删改查，查是对字段type的。返回格式为json。数据库是MySQL。