java获取前...天日期(两种方式)

1. 获取前一天日期

if(StringUtils.isBlank(curDate)) {
    curDate=DateTime.now().toDateStr();
}
// 获取前一天日期
String date = LocalDate.parse(curDate)
                .minusDays(1)
                .format(DateTimeFormatter.ofPattern("yyyyMMdd"));

Date dBefore = new Date();
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Calendar calendar = Calendar.getInstance();
calendar.setTime(dBefore);
calendar.add(Calendar.DATE, -1);
curDate = format.format(calendar.getTime());

2.获取前三个月日期

Date dBefore = new Date();
Calendar calendar = Calendar.getInstance();
calendar.setTime(dBefore);
calendar.add(Calendar.MONDAY, -3);
curDate = format.format(calendar.getTime());

if(StringUtils.isBlank(curDate)) {
    curDate=DateTime.now().toDateStr();
}
String date = LocalDate.parse(curDate)
                .minusMonths(3)
                .format(DateTimeFormatter.ofPattern("yyyyMMdd"));