我决定从5.5升级到Optaplanner 7.5 Nurseroster，但遇到了许多愚蠢的问题。下面是一个。我以前使用的例程如下。现在，新版本需要LocalDate。我有一个MySql数据库后端，用户通过日历选择花名册计划计划器。任何建议将不胜感激。

int shiftDateSize = maxDayIndex + 1; 
        List<ShiftDate> shiftDateList = new ArrayList<ShiftDate>(shiftDateSize); 
        //shiftDateMap = new HashMap<String, ShiftDate>(shiftDateSize); 
        long id = 0L; 
        int dayIndex = 0; 
        calendar.setTime(startDate); 
        for (int i = 0; i < shiftDateSize; i++) { 
            ShiftDate shiftDate = new ShiftDate(); 
            shiftDate.setId(id); 
            shiftDate.setDayIndex(dayIndex); 
            **String dateString = dateFormat.format(calendar.getTime());** 
            shiftDate.setDateString(dateString); 
            **shiftDate.setDayOfWeek(DayOfWeek.valueOfCalendar(calendar.get(Calendar.DAY_OF_WEEK)));** 
            shiftDate.setShiftList(new ArrayList<Shift>()); 
            shiftDateList.add(shiftDate); 
            shiftDateMap.put(dateString, shiftDate); 
            id++; 
            dayIndex++; 
            calendar.add(Calendar.DAY_OF_YEAR, 1); 
        } 
        nurseRoster.setShiftDateList(shiftDateList); 
    }  

请您参考如下方法:

我已经尝试使用以下代码从日历中获取 LocalDate

Calendar calendar = Calendar.getInstance(); 
TimeZone tz = calendar.getTimeZone(); 
ZoneId zid = tz == null ? ZoneId.systemDefault() : tz.toZoneId(); 
LocalDate localDate = LocalDateTime.ofInstant(calendar.toInstant(), zid).LocalDate(); 

LocalDate localDate = LocalDateTime.ofInstant(calendar.toInstant(), calendar.getTimeZone().toZoneId()).toLocalDate();