优化代码

java110

2021-09-22 fb2895a863aa42c100dea0a57ff88b00625cc679

 java110-utils/src/main/java/com/java110/utils/util/DateUtil.java

old mode 100644
new mode 100755
@@ -421,6 +421,20 @@
        return c.getTime();
    }

    /**
     * 在给定的日期加上或减去指定天数后的日期
     *
     * @param sourceDate 原始时间
     * @param day      要调整的月份，向前为负数，向后为正数
     * @return
     */
    public static Date stepDay(Date sourceDate, int day) {
        Calendar c = Calendar.getInstance();
        c.setTime(sourceDate);
        c.add(Calendar.DATE, day);
        return c.getTime();
    }

    public static String dateTimeToDate(String dateTime) {
        String dateStr = "";
        try {
@@ -432,6 +446,7 @@

        return dateStr;
    }


    public static int getYear() {
        Date date = getCurrentDate();
@@ -470,4 +485,30 @@
            return false;
        }
    }

    //获取两个日期之间的天数
    public static int daysBetween(Date now, Date returnDate) {
        Calendar cNow = Calendar.getInstance();
        Calendar cReturnDate = Calendar.getInstance();
        cNow.setTime(now);
        cReturnDate.setTime(returnDate);
        setTimeToMidnight(cNow);
        setTimeToMidnight(cReturnDate);
        long todayMs = cNow.getTimeInMillis();
        long returnMs = cReturnDate.getTimeInMillis();
        long intervalMs = todayMs - returnMs;
        return millisecondsToDays(intervalMs);
    }

    //获取两个日期之间的毫秒数
    private static void setTimeToMidnight(Calendar calendar) {
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);
    }

    //获取两个日期之间的分钟数
    private static int millisecondsToDays(long intervalMs) {
        return (int) (intervalMs / (1000 * 86400));
    }
}