Calendar c = Calendar.getInstance();
c.setTime(new Date(System.currentTimeMillis()));
        int dayCurrentMonth = c.get(Calendar.DAY_OF_MONTH);c.set(year, month, 0);
        int dayOFMonth = c.getActualMaximum(Calendar.DAY_OF_MONTH);
c.setFirstDayOfWeek(Calendar.MONDAY);
//當前時間，貌似多餘，其實是為了所有可能的系統一致
c.setTimeInMillis(System.currentTimeMillis
 
());
c.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
c.set(Calendar.DAY_OF_MONTH, 1);
//星期對應數字
int day = c.get(Calendar.DAY_OF_WEEK);
        int firstDay = 0;
        switch (day - 1) {
            case 0:
                firstDay = 1 + 1;
                break;
            case 1:
                firstDay = 1
 
;
                break;
            case 2:
                firstDay = 1 + 6;
                break;
            case 3:
                firstDay = 1 + 5;
                break;
            case 4:
                firstDay = 1 + 4;
                break;
            case 5:
                firstDay = 1 
 
+ 3;
                break;
            case 6:
                firstDay = 1 + 2;
                break;
}
        if ((dayOFMonth + 1 - firstDay) % 7 == 0) {
            weeks = (dayOFMonth + 1 - firstDay) / 7;
} else {
            weeks = (dayOFMonth + 1 - firstDay) / 7 + 1;
}
        System.out.println("=====" + firstDay + "  " + dayOFMonth + "  " + dayCurrentMonth + "  " + weeks + " " + month);
        if (dayCurrentMonth < firstDay) {
            --month;
getDayOfWeek();
} else {
            for (int i = 1; i <= weeks; i++) {
                if (dayCurrentMonth < firstDay + 7 * i && dayCurrentMonth <= dayOFMonth) {
                    week = i;
                    break;
}
            }
        }