1 /**
2 * 获取上个月的最后一天23点59分59秒的时间
3 */
4 private String getBeforeLastMonthdate()throws Exception{
5 SimpleDateFormat sf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
6 Calendar calendar=Calendar.getInstance();
7 int month=calendar.get(Calendar.MONTH);
8 calendar.set(Calendar.MONTH, month-1);
9 calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
10 //将小时至23
11 calendar.set(Calendar.HOUR_OF_DAY, 23);
12 //将分钟至59
13 calendar.set(Calendar.MINUTE, 59);
14 //将秒至59
15 calendar.set(Calendar.SECOND,59);
16 String format = sf.format(calendar.getTime());
17 return format;
18 }
1 /**
2 * 获取上一个月1号0点0分0秒的时间
3 */
4 private String getBeforeFirstMonthdate()throws Exception{
5 SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
6 Calendar calendar=Calendar.getInstance();
7 calendar.add(Calendar.MONTH, -1);
8 calendar.set(Calendar.DAY_OF_MONTH, 1);
9 //将小时至23
10 calendar.set(Calendar.HOUR_OF_DAY, 23);
11 //将分钟至59
12 calendar.set(Calendar.MINUTE, 59);
13 //将秒至59
14 calendar.set(Calendar.SECOND,59);
15 String format1 = format.format(calendar.getTime());
16 return format1;
17 }
打印出来结果是:
上个月第一天:2022-06-01 00:00:00
上个月最后一天:2022-06-30 23:59:59