CinemaDemo/src/main/java/com/example/cinema/blImpl/StatisticsServiceImpl.java

package com.example.cinema.blImpl;

import com.example.cinema.bl.StatisticsService;
import com.example.cinema.data.StatisticsMapper;
import com.example.cinema.vo.MovieScheduleTimeVO;
import com.example.cinema.vo.ResponseVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

/**
 * @author fjj
 * @date 2019/4/16 1:34 PM
 */
@Service
public class StatisticsServiceImpl implements StatisticsService {
    @Autowired
    private StatisticsMapper statisticsMapper;
    @Override
    public ResponseVO getScheduleRateByDate(Date date) {
        try{
            Date requireDate = date;
            if(requireDate == null){
                requireDate = new Date();
            }
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
            requireDate = simpleDateFormat.parse(simpleDateFormat.format(requireDate));

            Date nextDate = getNumDayAfterDate(requireDate, 1);
            List<MovieScheduleTimeVO> movieScheduleTimeVOList = statisticsMapper.selectMovieScheduleTimes(requireDate, nextDate);
            return ResponseVO.buildSuccess(movieScheduleTimeVOList);

        }catch (Exception e){
            e.printStackTrace();
            return ResponseVO.buildFailure("失败");
        }
    }


    /**
     * 获得num天后的日期
     * @param oldDate
     * @param num
     * @return
     * @throws ParseException
     */
    Date getNumDayAfterDate(Date oldDate, int num) throws ParseException {
        Calendar calendarTime = Calendar.getInstance();
        calendarTime.setTime(oldDate);
        calendarTime.add(Calendar.DAY_OF_YEAR, num);
        return calendarTime.getTime();
    }
}