日期时间段

public ActionForward doSelectSect(
      ActionMapping mapping,
      ActionForm actionForm,
      HttpServletRequest request,
      HttpServletResponse response) throws Exception {
    ActionForward forward = null;
    try {
      int seletType = 0;
      //查询时间
      ReportForm form = (ReportForm) actionForm;
      if (form.getTimesect() != null) {
        seletType = Integer.parseInt(form.getTimesect());
      }
      Calendar thisMonth = Calendar.getInstance();
      Date d = new Date();
      String month = ReoprtUtils.getMonth(d);
      String year = ReoprtUtils.getYear(d);
      thisMonth.set(Calendar.MONTH, Integer.parseInt(month) - 1);
      thisMonth.set(Calendar.YEAR, Integer.parseInt(year));
      thisMonth.setFirstDayOfWeek(Calendar.SUNDAY);
      thisMonth.set(Calendar.DAY_OF_MONTH, 1);
      //本月最大天数
      int maxIndex = thisMonth.getActualMaximum(Calendar.DAY_OF_MONTH);
      switch (seletType) {
      case 1: //当天
        form.setBtime(ReoprtUtils.getFormatDate(new Date(), 3));
        form.setEtime(ReoprtUtils.getFormatDate(new Date(), 3));
        break;
      case 2: //本月
        form.setBtime(year + "-" + month + "-" + "01");
        if (maxIndex < 10) {
          form.setEtime(year + "-" + month + "-" + "0" + maxIndex);
        } else {
          form.setEtime(year + "-" + month + "-" + maxIndex);
        }
        break;
      case 3: //本年
        form.setBtime(year + "-01-01");
        form.setEtime(year + "-12-31");
        break;
      case 4: //上月
        Calendar pastM = Calendar.getInstance();
        Date td = new Date();
        String month1 = ReoprtUtils.getMonth(td);
        String year1 = ReoprtUtils.getYear(td);
        int mTemp = Integer.parseInt(month1) - 2;
        if (mTemp < 0) {
          month1 = "12";
          year1 = String.valueOf(Integer.parseInt(year1) - 1);
        }
        int mTemp2 = Integer.parseInt(month1) - 1;
        String sTemp2 = "";
        if (mTemp2 < 10) {
          sTemp2 = "0" + String.valueOf(mTemp2);
        } else {
          sTemp2 = String.valueOf(mTemp2);
        }
        pastM.set(Calendar.MONTH, mTemp);
        pastM.set(Calendar.YEAR, Integer.parseInt(year1));
        pastM.setFirstDayOfWeek(Calendar.SUNDAY);
        pastM.set(Calendar.DAY_OF_MONTH, 1);
        //上月最大天数
        int max = pastM.getActualMaximum(Calendar.DAY_OF_MONTH);
        form.setBtime(year1 + "-" + sTemp2 + "-" + "01");
        if (maxIndex < 10) {
          form.setEtime(year1 + "-" + sTemp2 + "-" + "0" + max);
        } else {
          form.setEtime(year1 + "-" + sTemp2 + "-" + max);
        }
        break;
      case 5: //去年
        int leastYear = Integer.parseInt(ReoprtUtils.getYear(new Date())) - 1;
        form.setBtime(String.valueOf(leastYear) + "-01-01");
        form.setEtime(String.valueOf(leastYear) + "-12-31");
        break;
      case 6: //全部
        form.setBtime("1900-01-01");
        form.setEtime("2100-12-31");
        break;
      }
      request.setAttribute("form", form);
      forward = mapping.findForward("reportDetail");
    } catch (Exception e) {
      forward = mapping.findForward("error");
    }
    return forward;
  } 

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