随手拍新增图片宽高

huanghongfa

2021-08-23 508dd8dde98b7da379e56a819d1cb8d78b98a110

 springcloud_k8s_panzhihuazhihuishequ/common/src/main/java/com/panzhihua/common/utlis/DateUtils.java

@@ -32,6 +32,8 @@

    public static SimpleDateFormat ymdhms_format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    public static SimpleDateFormat ymdhm_format = new SimpleDateFormat("yyyy-MM-dd HH:mm");

    public static DateTimeFormatter format_ymd_String = DateTimeFormatter.ofPattern("yyMMdd");

    public static SimpleDateFormat yyyyMM_format = new SimpleDateFormat("yyyy-MM");
@@ -126,6 +128,13 @@
        return now;
    }

    /**
     * 返回当前事件的时间戳
     * @return
     */
    public static Long getCurrentDateTimeStamp(){
       return LocalDateTime.now().toInstant(ZoneOffset.of("+8")).toEpochMilli();
    }
    /**
     * 获取当前时间字符串，格式为yyyy-MM-dd HH:mm:ss
     * @return
@@ -744,15 +753,125 @@
        return date1.before(date2);
    }

    /**
     * date2比date1多的天数
     * @param date1
     * @param date2
     * @return
     */
    public static int differentDays(Date date1,Date date2)
    {
        Calendar cal1 = Calendar.getInstance();
        cal1.setTime(date1);

        Calendar cal2 = Calendar.getInstance();
        cal2.setTime(date2);
        int day1= cal1.get(Calendar.DAY_OF_YEAR);
        int day2 = cal2.get(Calendar.DAY_OF_YEAR);

        int year1 = cal1.get(Calendar.YEAR);
        int year2 = cal2.get(Calendar.YEAR);
        if(year1 != year2) //同一年
        {
            int timeDistance = 0 ;
            for(int i = year1 ; i < year2 ; i ++)
            {
                if(i%4==0 && i%100!=0 || i%400==0) //闰年
                {
                    timeDistance += 366;
                }
                else //不是闰年
                {
                    timeDistance += 365;
                }
            }

            return timeDistance + (day2-day1) ;
        }
        else //不同年
        {
//            System.out.println("判断day2 - day1 : " + (day2-day1));
            return day2-day1;
        }
    }

    /**
     * 获取当前月第一天
     * @return
     */
    public static String getFirstDayOfMonthString() {
        Calendar calendar = Calendar.getInstance();

        calendar.add(Calendar.MONTH, 0);

        calendar.set(Calendar.DAY_OF_MONTH, 1);
        // 格式化日期
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(calendar.getTime())+" 00:00:00";
    }

    /**
     * 获取当前月最后一天
     * @return
     */
    public static String getLastDayOfMonthString() {
        Calendar calendar = Calendar.getInstance();

        calendar.add(Calendar.MONTH, 1);

        calendar.set(Calendar.DAY_OF_MONTH, 0);
        // 格式化日期
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(calendar.getTime())+" 23:59:59";
    }

    /**
     * 获取当前时间（年月日）
     * @return
     */
    public static String getDayOfMonthString() {
        Calendar today = Calendar.getInstance();
        today.set(Calendar.HOUR, 0);
        today.set(Calendar.MINUTE, 0);
        today.set(Calendar.SECOND, 0);
        today.set(Calendar.MILLISECOND, 0);
        // 格式化日期
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        return sdf.format(today.getTime());
    }

    /**
     * 日期转周
     *
     * @param datetime
     * @return
     */
    public static String dateToWeek(String datetime) {
        SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd");
        String[] weekDays = { "周日", "周一", "周二", "周三", "周四", "周五", "周六" };
        Calendar cal = Calendar.getInstance(); // 获得一个日历
        Date datet = null;
        try {
            if (StringUtils.isNotEmpty(datetime)) {
                datet = f.parse(datetime);
                cal.setTime(datet);
            }
        } catch (ParseException e) {
            e.printStackTrace();
        }
        int w = cal.get(Calendar.DAY_OF_WEEK) - 1; // 指示一个周中的某天。
        if (w < 0)
            w = 0;
        return weekDays[w];
    }



    public static void main(String[]args)throws Exception{
        isValidDate("2020/12/4");
//        Date date= new Date();
//        Date after = new Date();
//        System.out.println(calTimeDifference(date,after));
        System.out.println(getYearMonthStart(2021,2));
//        System.out.println(getFirstDayOfMonthString());
//        System.out.println(getDayOfMonthString());

    }
}