得到开始和结束时间

public Map<String,Object> StartDateEndDate(){
        Map<String,Object> params = new HashMap<>();
        Date date = new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        calendar.add(Calendar.DATE,1);
        Date tomorrow = calendar.getTime();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd 00:00:00");
        String startDate = sdf.format(date);
        String endDate = sdf.format(tomorrow);
        params.put("startDate",startDate);
        params.put("endDate",endDate);
        return params;
    }