【Java】Java根据时间计算是否为上午、中午、下午以及根据日期获得星期几-蒲公英云

【Java】Java根据时间计算是否为上午、中午、下午以及根据日期获得星期几

1、编写公共方法：

/**
     * 根据小时判断是否为上午、中午、下午
     * @param hour
     * @return
     * @author zhangsq
     */
    public static String getDuringDay(int hour){
        if (hour >= 7 && hour < 11) {
            return BasicConstants.AM;
        }if (hour >= 11 && hour <= 13) {
            return BasicConstants.NOON;
        }if (hour >= 14 && hour <= 18) {
            return BasicConstants.PM;
        }
        return null;
    }

2、根据根据日期获得星期几的方法

/**
     * 根据日期获得星期的方法
     * @param date
     * @return
     * @author zhangsq
     */
    public static String getWeekOfDate(Date date) { 
          String[] weekDaysName = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" }; 
          //String[] weekDaysCode = { "0", "1", "2", "3", "4", "5", "6" }; 
          Calendar calendar = Calendar.getInstance(); 
          calendar.setTime(date); 
          int intWeek = calendar.get(Calendar.DAY_OF_WEEK) - 1; 
          return weekDaysName[intWeek]; 
        }

3、实际场景

@RequestMapping(value="/toHmplan.do")
    public @ResponseBody List<Map<String, Object>> getIndexHmplanInfo(HttpServletRequest request,
            HttpServletResponse response,ModelMap model,Integer pageMin,Integer pageMax){
        SimpleDateFormat dfTimes = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        List<HmPlan> hmPlansList = indexHmPlanService.findHmplanInfo(pageMin,pageMax);
        List<Map<String, Object>> hmPlanListMap = new ArrayList<Map<String, Object>>();
        for(HmPlan hmPlanBean : hmPlansList){
            String planTimeStr = dfTimes.format(hmPlanBean.getPlantTime());
            hmPlanBean.setDates(planTimeStr.substring(0, 10));//年月日
            hmPlanBean.setTimes(planTimeStr.substring(11));//时分秒
            if(planTimeStr.length()>10){
                //上午、中午、下午
                hmPlanBean.setDuring(WeekDayUtils.getDuringDay(Integer.parseInt(hmPlanBean.getTimes().substring(0,2))));
            }else {
                hmPlanBean.setDuring(BasicConstants.DURING);
            }
            //根据日期获取星期
            hmPlanBean.setWeekDay(WeekDayUtils.getWeekOfDate(hmPlanBean.getPlantTime()));
            Map<String, Object> hmPlanMap = new HashMap<String, Object>();
            hmPlanMap.put("hmPlanBean", hmPlanBean);
            hmPlanListMap.add(hmPlanMap);
        }
        return hmPlanListMap;
    }