SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Calendar c = Calendar.getInstance(); //过去七天 c.setTime(new Date()); c.add(Calendar.DATE, - 7); Date d = c.getTime(); String day = format.format(d); System.out.println("过去七天:"+day); //过去一月 c.setTime(new Date()); c.add(Calendar.MONTH, -1); Date m = c.getTime(); String mon = format.format(m); System.out.println("过去一个月:"+mon); //过去三个月 c.setTime(new Date()); c.add(Calendar.MONTH, -3); Date m3 = c.getTime(); String mon3 = format.format(m3); System.out.println("过去三个月:"+mon3); //过去一年 c.setTime(new Date()); c.add(Calendar.YEAR, -1); Date y = c.getTime(); String year = format.format(y); System.out.println("过去一年:"+year);