//获得当前日期
LocalDate localDate=LocalDate.now();//2021-11-23
//获得固定日期
LocalDate selfLocalDate=LocalDate.of(2021, 11, 23);//2021-11-23
//获取年份
int year = selfLocalDate.getYear(); // 2021
//获取月份
int month = selfLocalDate.getMonthValue(); // 11
//获取日期
int day = selfLocalDate.getDayOfMonth(); // 23
//获取星期
DayOfWeek weekday = selfLocalDate.getDayOfWeek();
int value = weekday .getValue(); //2
//日期加5天
LocalDate tenDaysLater = selfLocalDate.plusDays(5);//2021-11-28
int yearPlus = tenDaysLater.getYear(); // 2021
int monthPlus = tenDaysLater.getMonthValue(); // 11
int dayPlus = tenDaysLater.getDayOfMonth(); // 28
DayOfWeek weekdayPlus = tenDaysLater.getDayOfWeek();
int valuePlus = weekdayPlus .getValue(); //7
//日期减5天
LocalDate tenDaysAhead= selfLocalDate.minusDays(10);//2020-11-18
int yearAhead = tenDaysLater.getYear(); // 2021
int monthAhead = tenDaysLater.getMonthValue(); // 11
int dayAhead = tenDaysLater.getDayOfMonth(); // 18
DayOfWeek weekdayAhead = tenDaysAhead.getDayOfWeek();
int valueAhead = weekdayAhead .getValue(); //4
