Java 求两个月份之间的每个年月

朱雀 2023-06-15 11:26 83阅读 0赞

1. 求两个年月之间的月份,包含开始月份

/**
    	 * @param startMonth @example: "2016-01"
    	 * @param endMonth @example: "2019-11"
    	 * @return	两个时间之间的月份(含开始,结束)
    	 * @throws ParseException 
    	 */
    	private List<String> getMonths(String startMonth,String endMonth) throws ParseException{
    		LinkedList<String> months = new LinkedList<>();
    		
    		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
    		Calendar minCalender = Calendar.getInstance();
    		Calendar maxCalender = Calendar.getInstance();
    		
                    // 设置开始月份
    		minCalender.setTime(sdf.parse(startMonth));
    		minCalender.set(minCalender.get(Calendar.YEAR), minCalender.get(Calendar.MONTH),1);
    		
    		maxCalender.setTime(sdf.parse(endMonth));
                    // 设置日期,保证最后一个日期参数 大于 开始时间日历
    		maxCalender.set(maxCalender.get(Calendar.YEAR), maxCalender.get(Calendar.MONTH),2);
    		
    		while (minCalender.before(maxCalender)) {
    			months.add(sdf.format( minCalender.getTime() ));
    			minCalender.add(Calendar.MONTH, 1);
    		}
    		return months;
    	}

2. 求两个年月之间的月份,包含开始月份,不含结束月份

/**
    	 * @param startMonth @example: "2016-01"
    	 * @param endMonth @example: "2019-11"
    	 * @return	两个时间之间的月份(含开始,不含结束)
    	 * @throws ParseException 
    	 */
    	private List<String> getMonths(String startMonth,String endMonth) throws ParseException{
    		LinkedList<String> months = new LinkedList<>();
    		
    		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
    		Calendar minCalender = Calendar.getInstance();
    		Calendar maxCalender = Calendar.getInstance();
    		
                    // 设置开始月份
    		minCalender.setTime(sdf.parse(startMonth));
                    // 设置结束月份
    		maxCalender.setTime(sdf.parse(endMonth));
    		
    		while (minCalender.before(maxCalender)) {
    			months.add(sdf.format( minCalender.getTime() ));
    			minCalender.add(Calendar.MONTH, 1);
    		}
    		return months;
    	}