/**
* 查询一个时间段的总周数和查询当前时间是第几周
* @param start
* @param end
* @return
*/
private int[] selectWeekNum(Date start,Date end,int week,int flag){
java.util.Calendar now = java.util.Calendar.getInstance();
java.util.Calendar c_total = java.util.Calendar.getInstance();
java.util.Calendar c_begin = java.util.Calendar.getInstance();
java.util.Calendar c_end = java.util.Calendar.getInstance();
int count = 0;
int weekTotal = 0;
try {
c_begin.setTime(start);
c_end.setTime(end);
now.setTime(new SimpleDateFormat("yyyy-MM-dd").parse(sdf.format(new Date())));
int begin = c_begin.get(java.util.Calendar.WEEK_OF_YEAR);
int over =c_end.get( java.util.Calendar.WEEK_OF_YEAR);
int z = now.get( java.util.Calendar.WEEK_OF_YEAR);
if (c_begin.getWeekYear() != c_end.getWeekYear()) {
Date totalYear = new SimpleDateFormat("yyyy-MM-dd").parse(c_begin.getWeekYear() + "-12-31");
c_total.setTime(totalYear);
int x = c_total.get(java.util.Calendar.WEEK_OF_YEAR);
while(x==1){
c_total.add(java.util.Calendar.DAY_OF_MONTH, -1);
x = c_total.get(java.util.Calendar.WEEK_OF_YEAR);
}
//如果结束时间刚好是星期天则不加1
int weekNum = this.dayForWeek(new SimpleDateFormat("yyyy-MM-dd").format(end));
int duoyu = 0;
if(weekNum==7) {
duoyu = x - begin+1;
}else{
duoyu = x - begin + 1+1;
}
weekTotal = over + duoyu;
} else {
//如果结束时间刚好是星期天则不加1
int weekNum = this.dayForWeek(new SimpleDateFormat("yyyy-MM-dd").format(end));
if(weekNum==7){
weekTotal = over - begin ;
}else{
weekTotal = over - begin + 1;
}
}
if (c_begin.getWeekYear() != now.getWeekYear()) {
//计算总周数
int x = c_total.get(java.util.Calendar.WEEK_OF_YEAR);
while(x==1){
c_total.add(java.util.Calendar.DAY_OF_MONTH, -1);
x = c_total.get(java.util.Calendar.WEEK_OF_YEAR);
}
int weekNum = this.dayForWeek(new SimpleDateFormat("yyyy-MM-dd").format(start));
int duoyu =0;
if(weekNum==7){
duoyu = x - begin + 1+1;
}else{
duoyu = x - begin + 1;
}
count = duoyu + z;
} else {
int weekNum = this.dayForWeek(new SimpleDateFormat("yyyy-MM-dd").format(start));
if(weekNum==7){
count = (z - begin + 1)+1;
}else{
count = (z - begin + 1);
}
}
if (c_end.getTime().getTime() < now.getTime().getTime() || count < 0) {
//如果当前时间大于学期结束时间，默然显示第一周
count = 1;
} //下拉框默认显示的东西可根据实际情况删除或保留
if (week != 0 && flag == 1) {
count = week;
}
} catch (Exception e) {
e.printStackTrace();
}
return new int[]{count,weekTotal};
}
/**
* 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;
}
时间： 2024-10-21 09:03:23