日期减一天

  SimpleDateFormat dft = new SimpleDateFormat("yyyy-MM-dd");
  Calendar date = Calendar.getInstance();
  date.setTime(new Date());
  String str = dft.format(date.getTime());
  System.out.println(str);
  date.set(Calendar.DATE, date.get(Calendar.DATE) - 1);//日期减一天
  String endDate = dft.format(date.getTime());
  System.out.println(endDate);