【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

缺乏、安全感 2022-06-18 07:08 552阅读 0赞

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;
    	}

4、效果

![20170331134846850][]

[20170331134846850]: /images/20220618/434273c91e634e1ea9ec66a9faf10656.png