split bank in download xlsx

src/main/java/au/com/royalpay/payment/manage/management/clearing/core/impl/CleanServiceImpl.java

@@ -342,12 +342,15 @@ public class CleanServiceImpl implements CleanService, ManagerTodoNoticeProvider
         ZipOutputStream zos = new ZipOutputStream(ous);
         for (JSONObject log : logs) {
             String dateString = DateFormatUtils.format(log.getDate("operate_time"), "yyyyMMddHHmmss");
-            String filename = "Merchant_Settlement_Info_" + dateString + RandomStringUtils.random(8, false, true) + ".xlsx";
-            zos.putNextEntry(new ZipEntry(filename));
             List<JSONObject> details = clearingDetailMapper.listReportsOfSettlement(log.getIntValue("clearing_id"));
-            byte[] xlsx = generateSettleXlsxFile(dt, details, null);
+            List<String> bankList = details.stream().map(detail -> detail.getString("settle_bank")).distinct().collect(Collectors.toList());
+            for (String bank : bankList) {
+                String filename = "Merchant_Settlement_Info_" + dateString + "_" + bank + ".xlsx";
+                zos.putNextEntry(new ZipEntry(filename));
+                byte[] xlsx = generateSettleXlsxFile(dt, details, bank);
                 IOUtils.write(xlsx, zos);
             }
+        }
         zos.flush();
         IOUtils.closeQuietly(zos);
     }