使用Java编程和springboot框架实现创建活动并关联奖品，一个活动必须关联8个奖品，总概率为100% 给出相应的controller层，service层,service实现类，daoc层及mapper，

好的，以下是相应的代码实现：

1. Controller层

@RestController
@RequestMapping("/activity")
public class ActivityController {

    @Autowired
    private ActivityService activityService;

    @PostMapping("/create")
    public ResponseEntity<Activity> createActivity(@RequestBody ActivityDTO activityDTO) {
        Activity activity = activityService.createActivity(activityDTO);
        return ResponseEntity.ok(activity);
    }
}

2. Service层

public interface ActivityService {

    Activity createActivity(ActivityDTO activityDTO);
}

3. Service实现类

@Service
public class ActivityServiceImpl implements ActivityService {

    @Autowired
    private ActivityMapper activityMapper;

    @Override
    public Activity createActivity(ActivityDTO activityDTO) {
        // 验证奖品概率总和是否为100%
        if (activityDTO.getPrizes().stream().mapToDouble(PrizeDTO::getProbability).sum() != 1.0) {
            throw new IllegalArgumentException("奖品概率总和不为100%");
        }

        // 创建活动
        Activity activity = new Activity();
        activity.setName(activityDTO.getName());
        activity.setStartTime(activityDTO.getStartTime());
        activity.setEndTime(activityDTO.getEndTime());

        // 创建奖品并关联活动
        List<Prize> prizes = activityDTO.getPrizes().stream().map(prizeDTO -> {
            Prize prize = new Prize();
            prize.setName(prizeDTO.getName());
            prize.setProbability(prizeDTO.getProbability());
            prize.setActivity(activity);
            return prize;
        }).collect(Collectors.toList());

        activity.setPrizes(prizes);
        activityMapper.insert(activity);
        return activity;
    }
}

4. DAO层及Mapper

ActivityMapper.java

@Mapper
public interface ActivityMapper {

    void insert(Activity activity);
}

Activity.java

public class Activity {

    private Long id;
    private String name;
    private LocalDateTime startTime;
    private LocalDateTime endTime;
    private List<Prize> prizes;

    // 省略getter和setter方法
}

Prize.java

public class Prize {

    private Long id;
    private String name;
    private double probability;
    private Activity activity;

    // 省略getter和setter方法
}

以上就是使用Java编程和Spring Boot框架实现创建活动并关联奖品的代码实现，希望能够对您有所帮助。