写法

    /**
     * 如果号码相邻的发票号码没有用“-”连接，就修改为“-”连接
     * @param controller
     * @return 发票说明
     * @throws ActiveRecordException
     */
    private static String createInvoiceDescription(String payUuid) throws ActiveRecordException {
        // 查询发票号码
        String selSql = String.format(
                "select invoice_no from %s where draft_id=? and sys_status=%s order by invoice_no asc",
                BizInvoiceDraft.dao.getTable().getName(), BlConstant.SYS_STATUS_VALUE);
        // db查询
        List<Record> records = Db.find(selSql, payUuid);
        BigDecimal b1 = null;
        BigDecimal b2 = null;
        if (records.size() == 0) {
            // 没有发票信息，发票说明为空
            return "";
        } else if (records.size() == 1) {
            // 只有一条发票信息
            return records.get(0).get("invoiceNo");
        } else if (records.size() == 2) {
            // 只有两条发票信息
            b1 = new BigDecimal(records.get(0).get("invoiceNo").toString());
            b2 = new BigDecimal(records.get(1).get("invoiceNo").toString());
            // 判断发票号码是否相邻
            if (b2.compareTo(b1.add(new BigDecimal(1))) == 0) {
                // 相邻
                return records.get(0).get("invoiceNo").toString() + "-" + records.get(1).get("invoiceNo").toString();
            } else {
                // 不相邻
                return records.get(0).get("invoiceNo").toString() + "," + records.get(1).get("invoiceNo").toString();
            }
        } else {
            // 发票信息记录数大于2
            String tmpRtnStr = records.get(0).get("invoiceNo");
            String rtnStr = "";
            for (int i = 1; i < records.size(); i++) {
                b1 = new BigDecimal(records.get(i - 1).get("invoiceNo").toString());
                b2 = new BigDecimal(records.get(i).get("invoiceNo").toString());
                if (b2.compareTo(b1.add(new BigDecimal("1"))) == 0) {
                    // 当前两个发票号码相邻
                } else {
                    // 当前两个发票号码不相邻
                    if (new BigDecimal(tmpRtnStr)
                            .compareTo(new BigDecimal(records.get(i - 1).get("invoiceNo").toString())) == 0) {
                        rtnStr = rtnStr + records.get(i - 1).get("invoiceNo").toString() + ",";
                    } else {
                        tmpRtnStr = tmpRtnStr + "-" + records.get(i - 1).get("invoiceNo").toString();
                        rtnStr = rtnStr + tmpRtnStr + ",";
                    }

                    tmpRtnStr = records.get(i).get("invoiceNo").toString();
                }
                if (i == records.size() - 1) {
                    if ((new BigDecimal(tmpRtnStr))
                            .compareTo(new BigDecimal(records.get(i).get("invoiceNo").toString())) == 0) {

                    } else {
                        tmpRtnStr += "-" + records.get(i).get("invoiceNo").toString();
                    }
                    rtnStr = rtnStr + tmpRtnStr + ",";
                }
            }
            return rtnStr.substring(0, rtnStr.length() - 1);
        }

    }

if (!duplicatedPayIds.isEmpty()) {
                    // 记录校验不通过
                    isCheckPass = false;
                    // comment
                    String comment = "该付款确认书的BIP编码与";
                    int countNum = 0;
                    for (Record r : duplicatedPayIds) {
                        if (0 < countNum) {
                            comment += "、";
                        }
                        comment += r.getStr("payId");
                        countNum ++;
                    }
                    comment += "的BIP编码重复;";
                    // 数据校验不通过
                    bizPayComfirmDraftErrorStr.append(comment);
                }