Java-日期处理方法

ゝ一纸荒年。 2021-12-03 03:29 344阅读 0赞

1.获取当月所有单天日期

/\*\* 
     \* Title: getDayListOfMonth 
     \* Description: 获取当前月的所有日期 
     \* @author douzi 
     \* @param mouth 
     \* @return 
     \*/ 
    private List<String> getDayListOfMonth(int mouth) \{ 
        List<String> list = new ArrayList<>(); 
        Calendar aCalendar = Calendar.getInstance(Locale.CHINA); 
        aCalendar.set(Calendar.DAY\_OF\_MONTH, 1); 
        aCalendar.set(Calendar.MONTH, mouth - 1); 
        int year = aCalendar.get(Calendar.YEAR);//年份 
        int month = aCalendar.get(Calendar.MONTH) + 1;//月份 
        int day = aCalendar.getActualMaximum(Calendar.DATE); 
        for (int i = 1; i <= day; i++) \{ 
            String aDate = String.valueOf(year)+"-"+ (month>9?month:("0"+month)) +"-"+(i>9?i:("0"+i)); 
            list.add(aDate); 
        \} 
        return list; 
    \}

2.获取两个日期之间的单天日期

private static List<String> getBetweenDates(String startTime, String endTime) \{ 
        SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
        List<String> result = new ArrayList<String>(); 
        try \{ 
            Date start = df.parse(startTime); 
            Date end = df.parse(endTime); 
            Calendar tempStart = Calendar.getInstance(); 
            tempStart.setTime(start); 
//            tempStart.add(Calendar.DAY\_OF\_YEAR, 1); //是否需要包括开始结束时间

Calendar tempEnd = Calendar.getInstance();  
            tempEnd.setTime(end);  
            while (tempStart.before(tempEnd)) \{  
                result.add( df.format(tempStart.getTime()));  
                tempStart.add(Calendar.DAY\_OF\_YEAR, 1);  
            \}  
        \} catch (ParseException e) \{  
            e.printStackTrace();  
        \}  
        return result;  
    \}