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);