Java默认传入时间段时间的实例

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");  Date date = new Date();  String nowDate = sdf.format(date);  Calendar c = Calendar.getInstance();   c.add(Calendar.MONTH, 0);  c.set(Calendar.DAY_OF_MONTH,1);//设置为1号,当前日期既为本月第一天   String firstDate = sdf.format(c.getTime());  if("".equals(form.getBeginDate())||form.getBeginDate()==null){   System.out.println("月初"+firstDate);   form.setBeginDate(firstDate);  }  if("".equals(form.getEndDate())||form.getEndDate()==null){   System.out.println("今天"+nowDate);   form.setEndDate(nowDate);  }  String sql = " select count(id) from getDealerAccount("+form.getBeginDate()+","+form.getEnd()+") ";  System.out.println("报表Count"+sql);  return this.jdbcTemplate.queryForObject(sql, Long.class);