/**
* 判断当前日期是星期几
*
* @param pTime 修要判断的时间
* @return dayForWeek 判断结果
* @Exception 发生异常
*/
public int dayForWeek(String pTime) throws Exception {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
java.util. Calendar c = java.util. Calendar.getInstance();
c.setTime(format.parse(pTime));
int dayForWeek = 0;
if(c.get( java.util. Calendar.DAY_OF_WEEK) == 1){
dayForWeek = 7;
}else{
dayForWeek = c.get( java.util. Calendar.DAY_OF_WEEK) - 1;
}
return dayForWeek;
}
/**
* 查询一周的开始时间和结束时间
* @param date
* @return
*/
private Map<String,Date> onceWeek(Date date){
java.util.Calendar currentDate = new GregorianCalendar();
currentDate.setTime(date);
currentDate.setFirstDayOfWeek( java.util.Calendar.MONDAY);
currentDate.set( java.util.Calendar.HOUR_OF_DAY, 0);
currentDate.set( java.util.Calendar.MINUTE, 0);
currentDate.set( java.util.Calendar.SECOND, 0);
currentDate.set( java.util.Calendar.DAY_OF_WEEK, java.util.Calendar.MONDAY);
Date dBegin = (Date) currentDate.getTime().clone();
currentDate.setFirstDayOfWeek( java.util.Calendar.MONDAY);
currentDate.set( java.util.Calendar.HOUR_OF_DAY, 23);
currentDate.set( java.util.Calendar.MINUTE, 59);
currentDate.set( java.util.Calendar.SECOND, 59);
currentDate.set( java.util.Calendar.DAY_OF_WEEK, java.util.Calendar.SUNDAY);
Date dEnd =(Date) currentDate.getTime().clone();
//返回星期天和一个星期的日期和周几
Map<String,Date> map = new HashMap<>();
map.put("dBegin",dBegin);
map.put("dEnd",dEnd);
return map;
}
/**
* 查询一周的时间
* @param start
* @param end
* @param week
* @param flag
* @return
*/
private List< List<ScheduleVO> > onceWeekList(Date start ,Date end,int week,int flag) {
List< List<ScheduleVO>> list = new ArrayList<>();
try {
int[] total = this.selectWeekNum(start, end,week,flag);
int weekTotal = total[1];
java.util.Calendar currentDate = new GregorianCalendar();
currentDate.setTime(start);
for (int i = 0; i < weekTotal; i++) {
Map<String,Date> map = this.onceWeek(currentDate.getTime());
List<ScheduleVO> lDate = findDates(map.get("dBegin"),map.get("dEnd"));
currentDate.setTime(map.get("dEnd"));
currentDate.add(java.util.Calendar.DAY_OF_MONTH, 1);
list.add(lDate);
}
}catch (Exception e){
System.out.print(e.getMessage());
}
return list;
}
/**
*查询当前日期和指定日期为星期几
* @param beginDate
* @param endDate
* @return
*/
public static List<ScheduleVO> findDates(Date beginDate, Date endDate)
{
//数字转中文
SimpleDateFormat sif = new SimpleDateFormat("yyyy-MM-dd");
Map<Integer,String> weekNumString = new HashMap<>();
weekNumString.put(1,"星期一");
weekNumString.put(2,"星期二");
weekNumString.put(3,"星期三");
weekNumString.put(4,"星期四");
weekNumString.put(5,"星期五");
weekNumString.put(6,"星期六");
weekNumString.put(7,"星期天");
ScheduleVO schedule1 = new ScheduleVO();
List<ScheduleVO> lDate = new ArrayList<>();
schedule1.setDate(sif.format(beginDate));
schedule1.setWeekName("星期一");
schedule1.setWeek(1);
lDate.add(schedule1);
java.util.Calendar cal = java.util.Calendar.getInstance();
cal.setTime(beginDate);
boolean bContinue = true;
int week = 1;
while (bContinue) {
//根据日历的规则，为给定的日历字段添加或减去指定的时间量
cal.add(java.util.Calendar.DAY_OF_MONTH, 1);
// 测试此日期是否在指定日期之后
if (endDate.after(cal.getTime()))
{
week++;
ScheduleVO schedule = new ScheduleVO();
schedule.setDate(sif.format(cal.getTime()));
schedule.setWeekName(weekNumString.get(week));
schedule.setWeek(week);
lDate.add(schedule);
}else {
bContinue = false;
}
}
return lDate;
}
//总共有几周 当天是这段时间的第几周
public static Long[] weekNum(String begin,String end) throws ParseException {
Calendar cal = Calendar.getInstance();
cal.setTime(DateUtils.parseDate(begin,DateUtils.FORMAT_DATE));
int monday = cal.get(Calendar.DAY_OF_WEEK) - 1;
if(monday!=1){
cal.set(cal.DAY_OF_WEEK, cal.MONDAY);
begin= DateUtils.format(cal.getTime(),DateUtils.FORMAT_DATE);
}
System.out.println("学期开始时间所在周周一日期："+begin);
Calendar cal1 = Calendar.getInstance();
cal1.setTime(DateUtils.parseDate(end,DateUtils.FORMAT_DATE));
int sunday = cal1.get(Calendar.DAY_OF_WEEK) - 1;
if(sunday!=0){
cal1.set(Calendar.DATE, cal1.get(cal1.DATE) + 6);
end = DateUtils.format(cal1.getTime(),DateUtils.FORMAT_DATE);
}
System.out.println("学期结束时间所在周周日日期："+end);
Long totalWeek = 0l;
Long thisWeek = 0l;
String nowDate = DateUtils.format(new Date(),DateUtils.FORMAT_DATE);
int ss = 1000;
int mi = ss * 60;
int hh = mi * 60;
int dd = hh * 24;
Long beginTime =DateUtils.parse(begin,DateUtils.FORMAT_DATE).getTime();
Long endTime =DateUtils.parse(end,DateUtils.FORMAT_DATE).getTime();
//当前时间的星期天
Calendar cal2 = Calendar.getInstance();
cal2.setTime(new Date());
int thisSunDay = cal2.get(Calendar.DAY_OF_WEEK) - 1;
if(thisSunDay!=0){
cal2.set(Calendar.DATE, cal2.get(cal2.DATE) + 6);
nowDate = DateUtils.format(cal2.getTime(),DateUtils.FORMAT_DATE);
}
System.out.println("当前时间所在周周日日期："+nowDate);
Long now = DateUtils.parse(nowDate,DateUtils.FORMAT_DATE).getTime();
//得到总共的天数，因为开始时间没有计算进去故加1
Long totalWeekTime = (endTime-beginTime)/ dd+1;
Long thisWeekTime = (now-beginTime)/dd+1;
totalWeek = totalWeekTime/7;//得到总的周数
if(now>endTime){
thisWeek = 1l;//默认显示第一周
}else if(monday==0){
thisWeek= thisWeekTime/7+1;//因英文第一天是周日故+1
}else{
thisWeek= thisWeekTime/7;
}
return new Long[]{thisWeek,totalWeek};
}
