@RequestMapping(value = "/pay_merchant", method = RequestMethod.POST) public String paymerchantPageAction( @ModelAttribute("paymerchantOp") TempTransactions transactionObj, Model model, HttpSession session) throws IOException { logger.info("Inside pay merchant op POST"); /** To display user profile */ UserInfo UI = new UserInfo(); DatabaseConnectors dbcon = new DatabaseConnectors(); UI = dbcon.getUserInfoByUniqId((String) session.getAttribute("uniqueid")); String uniqueID = (String) session.getAttribute("uniqueid"); ExternalUser extUser = databaseConnector.getExternalUserByUniqId(uniqueID); String utype = null; String str1 = (String) session.getAttribute("uniqueid"); System.out.println(str1); String str2 = str1.substring(0, 2); if (str2.equals("ei")) { utype = "Single User"; } else if (str2.equals("em")) { utype = "Merchant"; } else if (str2.equals("ir")) { utype = "Internal User"; } else if (str2.equals("im")) { utype = "Manager"; } else if (str2.equals("admin")) { utype = "Administrator"; } model.addAttribute("firstName", UI.getFirstName()); model.addAttribute("lastName", UI.getLastName()); model.addAttribute("Username", UI.getUsername()); model.addAttribute("email", UI.getEmailId()); model.addAttribute("accountno", extUser.getAccountno()); model.addAttribute("streetAddress", UI.getAddress()); model.addAttribute("city", UI.getCity()); model.addAttribute("state", UI.getState()); model.addAttribute("country", UI.getCountry()); model.addAttribute("zip", UI.getZipcode()); model.addAttribute("contactNo", UI.getContactNo()); model.addAttribute("userType", utype); logger.info("Current user" + uniqueID); MultipartFile fileGot = transactionObj.getMpFile(); String file_name = fileGot.getOriginalFilename(); ServletContext context = session.getServletContext(); String realContextPath = context.getRealPath("/"); // String certpath = realContextPath+"/certificates/"+fileGot.getOriginalFilename(); String certpath = realContextPath + "/certificates/" + uniqueID + "_cert.pem"; String temp__2_2 = realContextPath + "/certificates"; File temp_1_2 = new File(temp__2_2); if (!temp_1_2.exists()) temp_1_2.mkdirs(); File convFile = new File(certpath); convFile.createNewFile(); FileOutputStream fos = new FileOutputStream(convFile); fos.write(fileGot.getBytes()); fos.close(); if (pkiGringott.verifyCertificate(uniqueID, session) == false) { logger.info(certpath); logger.info("uniqId is:" + uniqueID); logger.info("Certificate verification is failed"); model.addAttribute("message", "Certificate verification failed"); Transactions transObj_1 = new Transactions(); // logger.info("Ext User"+extUser); // transObj.setBalance(extUser.getBalance()); TempTransactions temp_1 = new TempTransactions(); temp_1.setBalance(transactionObj.getBalance()); model.addAttribute("debitOp", transObj_1); model.addAttribute("creditOp", transObj_1); model.addAttribute("checkAccBal", transObj_1.getBalance()); model.addAttribute("savingAccBal", "500"); model.addAttribute("transferOp", temp_1); model.addAttribute("paymerchantOp", temp_1); model.addAttribute("transactionOp", temp_1); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj_1 = displaytransaction(session); if (obj_1 == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj_1); } return "extUserHomePage"; } else { logger.info("uniqId is:" + uniqueID); logger.info("Certificate verified"); } MultipartFile pkf = transactionObj.getPkFile(); String pkf_name = pkf.getOriginalFilename(); logger.info(pkf_name); // String pkpath = realContextPath+"/privatekeys/"+pkf.getOriginalFilename(); String pkpath = realContextPath + "/privatekeys/" + uniqueID + "_private.key"; String temp_1 = realContextPath + "/privatekeys"; File temp_1_1 = new File(temp_1); if (!temp_1_1.exists()) temp_1_1.mkdirs(); File convFile_1 = new File(pkpath); convFile_1.createNewFile(); FileOutputStream fos_1 = new FileOutputStream(convFile_1); fos_1.write(pkf.getBytes()); fos_1.close(); if (pkiGringott.verifyPrivateKey(uniqueID, session) == false) { logger.info(pkpath); logger.info("uniqId is:" + uniqueID); logger.info("private key verification is failed"); model.addAttribute("message", "private key verification failed"); Transactions transObj_2 = new Transactions(); // logger.info("Ext User"+extUser); // transObj.setBalance(extUser.getBalance()); TempTransactions temp_2 = new TempTransactions(); temp_2.setBalance(transactionObj.getBalance()); model.addAttribute("debitOp", transObj_2); model.addAttribute("creditOp", transObj_2); model.addAttribute("checkAccBal", transObj_2.getBalance()); // model.addAttribute("savingAccBal", "500" ); model.addAttribute("transferOp", temp_2); model.addAttribute("paymerchantOp", temp_2); model.addAttribute("transactionOp", temp_2); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj_2 = displaytransaction(session); if (obj_2 == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj_2); } return "extUserHomePage"; } else { logger.info("uniqId is:" + uniqueID); logger.info("Private key verified"); } transactionObj.setBalance(extUser.getBalance()); logger.info("Current Balance" + transactionObj.getBalance()); float amount = transactionObj.getTransactionAmount(); float currentBalance = transactionObj.getBalance(); logger.info("balance :", currentBalance); logger.info("account number ", transactionObj.getAccountno()); // credit amount from current account balance ExternalUser merch = databaseConnector.getExternalUserByAccNum(transactionObj.getAccountno()); if (merch == null) { model.addAttribute("message", "Account number is invalid"); Transactions transObj_2 = new Transactions(); // logger.info("Ext User"+extUser); // transObj.setBalance(extUser.getBalance()); TempTransactions temp_2 = new TempTransactions(); temp_2.setBalance(transactionObj.getBalance()); model.addAttribute("debitOp", transObj_2); model.addAttribute("creditOp", transObj_2); model.addAttribute("checkAccBal", transObj_2.getBalance()); // model.addAttribute("savingAccBal", "500" ); model.addAttribute("transferOp", temp_2); model.addAttribute("paymerchantOp", temp_2); model.addAttribute("transactionOp", temp_2); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj_2 = displaytransaction(session); if (obj_2 == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj_2); } return "extUserHomePage"; } transactionObj.setUniqId(uniqueID); transactionObj.setDescription("transferred amount: " + amount); transactionObj.setTransactionType("tranfer"); transactionObj.setBalance(currentBalance - amount); // extUser.setBalance(currentBalance-amount); // databaseConnector.updateExternalUser(extUser); databaseConnector.saveTempTransaction(transactionObj); Transactions temp = new Transactions(); temp.setBalance(transactionObj.getBalance()); model.addAttribute("debitOp", temp); model.addAttribute("creditOp", temp); model.addAttribute("checkAccBal", temp.getBalance()); model.addAttribute("transferOp", transactionObj); model.addAttribute("paymerchantOp", transactionObj); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj = displaytransaction(session); if (obj == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj); } logger.info("Leaving transfer money POST"); return "extUserHomePage"; }
@RequestMapping(value = "/transfer_money", method = RequestMethod.POST) public String transfermoneyPageAction( @ModelAttribute("transferOp") TempTransactions transObj, Model model, HttpSession session) throws Exception { logger.info("Inside transfer money op POST"); @SuppressWarnings("deprecation") String uniqId = (String) session.getAttribute("uniqueid"); /** To display user profile */ UserInfo UI = new UserInfo(); DatabaseConnectors dbcon = new DatabaseConnectors(); UI = dbcon.getUserInfoByUniqId((String) session.getAttribute("uniqueid")); String utype = null; String str1 = (String) session.getAttribute("uniqueid"); System.out.println(str1); String str2 = str1.substring(0, 2); if (str2.equals("ei")) { utype = "Single User"; } else if (str2.equals("em")) { utype = "Merchant"; } else if (str2.equals("ir")) { utype = "Internal User"; } else if (str2.equals("im")) { utype = "Manager"; } else if (str2.equals("admin")) { utype = "Administrator"; } ExternalUser extUser = databaseConnector.getExternalUserByUniqId(uniqId); model.addAttribute("firstName", UI.getFirstName()); model.addAttribute("lastName", UI.getLastName()); model.addAttribute("Username", UI.getUsername()); model.addAttribute("email", UI.getEmailId()); model.addAttribute("accountno", extUser.getAccountno()); model.addAttribute("streetAddress", UI.getAddress()); model.addAttribute("city", UI.getCity()); model.addAttribute("state", UI.getState()); model.addAttribute("country", UI.getCountry()); model.addAttribute("zip", UI.getZipcode()); model.addAttribute("contactNo", UI.getContactNo()); model.addAttribute("userType", utype); MultipartFile fileGot = transObj.getMpFile(); String file_name = fileGot.getOriginalFilename(); ServletContext context = session.getServletContext(); String realContextPath = context.getRealPath("/"); // String certpath = realContextPath+"/certificates/"+fileGot.getOriginalFilename(); String certpath = realContextPath + "/certificates/" + uniqId + "_cert.pem"; String temp__2_2 = realContextPath + "/certificates"; File temp_1_2 = new File(temp__2_2); if (!temp_1_2.exists()) temp_1_2.mkdirs(); File convFile = new File(certpath); convFile.createNewFile(); FileOutputStream fos = new FileOutputStream(convFile); fos.write(fileGot.getBytes()); fos.close(); if (pkiGringott.verifyCertificate(uniqId, session) == false) { logger.info(certpath); logger.info("uniqId is:" + uniqId); logger.info("Certificate verification is failed"); model.addAttribute("message", "Certificate verification failed"); Transactions transObj_1 = new Transactions(); // logger.info("Ext User"+extUser); // transObj.setBalance(extUser.getBalance()); TempTransactions temp_1 = new TempTransactions(); temp_1.setBalance(transObj.getBalance()); model.addAttribute("debitOp", transObj_1); model.addAttribute("creditOp", transObj_1); model.addAttribute("checkAccBal", transObj_1.getBalance()); model.addAttribute("transferOp", temp_1); model.addAttribute("paymerchantOp", temp_1); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj_1 = displaytransaction(session); if (obj_1 == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj_1); } return "extUserHomePage"; } else { logger.info("uniqId is:" + uniqId); logger.info("Certificate verified"); } MultipartFile pkf = transObj.getPkFile(); String pkf_name = pkf.getOriginalFilename(); logger.info(pkf_name); // String pkpath = realContextPath+"/privatekeys/"+pkf.getOriginalFilename(); String pkpath = realContextPath + "/privatekeys/" + uniqId + "_private.key"; String temp_1 = realContextPath + "/privatekeys"; File temp_1_1 = new File(temp_1); if (!temp_1_1.exists()) temp_1_1.mkdirs(); File convFile_1 = new File(pkpath); convFile_1.createNewFile(); FileOutputStream fos_1 = new FileOutputStream(convFile_1); fos_1.write(pkf.getBytes()); fos_1.close(); if (pkiGringott.verifyPrivateKey(uniqId, session) == false) { logger.info(pkpath); logger.info("uniqId is:" + uniqId); logger.info("private key verification is failed"); model.addAttribute("message", "private key verification failed"); Transactions transObj_2 = new Transactions(); // logger.info("Ext User"+extUser); // transObj.setBalance(extUser.getBalance()); TempTransactions temp_2 = new TempTransactions(); temp_2.setBalance(transObj.getBalance()); model.addAttribute("debitOp", transObj_2); model.addAttribute("creditOp", transObj_2); model.addAttribute("checkAccBal", transObj_2.getBalance()); model.addAttribute("transferOp", temp_2); model.addAttribute("paymerchantOp", temp_2); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj_2 = displaytransaction(session); if (obj_2 == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj_2); } return "extUserHomePage"; } else { logger.info("uniqId is:" + uniqId); logger.info("Private key verified"); } UserInfo extInfo = databaseConnector.getUserInfoByUniqId(extUser.getUniqId()); session.setAttribute("transAccntNo", transObj.getAccountno()); logger.info("Inside credit part of transfer money op POST"); // String uniqueID = (String)session.getAttribute("uniqueid"); // String uniqueID ="EM123"; OtpTransactions transPost2 = new OtpTransactions(); ExternalUser extUser2 = databaseConnector.getExternalUserByAccNum(transObj.getAccountno()); OtpTransactions transPost = new OtpTransactions(); transPost.setBalance(extUser.getBalance()); transObj.setBalance(extUser.getBalance()); float amount = transObj.getTransactionAmount(); float currentBalance = transObj.getBalance(); if (extUser2 == null) { model.addAttribute("message", "Account number not found"); model.addAttribute("debitOp", transPost); model.addAttribute("creditOp", transPost); model.addAttribute("checkAccBal", extUser.getBalance()); model.addAttribute("transferOp", transObj); model.addAttribute("paymerchantOp", transObj); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj = displaytransaction(session); if (obj == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj); } return "extUserHomePage"; } databaseConnector.deleteOtpTransactionById(uniqId); databaseConnector.deleteOtpTransactionById(extUser2.getUniqId()); if (currentBalance >= amount) { logger.info("EU.getBalance" + transPost.getBalance()); // debit amount from current account balance transPost.setUniqId(uniqId); transPost.setDescription("debited amount: " + amount); transPost.setTransactionAmount(amount); transPost.setTransactionType("debit"); transPost.setBalance(currentBalance - amount); // extUser.setBalance(currentBalance-amount); // databaseConnector.updateExternalUser(extUser); databaseConnector.saveOtpTransaction(transPost); session.setAttribute("recipient", extUser2.getUniqId().toString()); float currentBalance1 = extUser2.getBalance(); logger.info("Current Balance" + currentBalance1); transPost2.setBalance(extUser.getBalance()); logger.info("balance :" + currentBalance1); // credit amount from current account balance transPost2.setUniqId(extUser2.getUniqId()); transPost2.setDescription("credited amount: " + amount); transPost2.setTransactionAmount(amount); transPost2.setTransactionType("credit"); transPost2.setBalance(currentBalance1 + amount); // extUser2.setBalance(currentBalance1+amount); // databaseConnector.updateExternalUser(extUser2); databaseConnector.saveOtpTransaction(transPost2); model.addAttribute("debitOp", transPost); model.addAttribute("creditOp", transPost); model.addAttribute("checkAccBal", extUser.getBalance()); model.addAttribute("transferOp", transObj); model.addAttribute("paymerchantOp", transObj); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj = displaytransaction(session); if (obj == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj); } } else { model.addAttribute("message", "Amount cannot be more than the balance"); } Random rand = new Random(); int randomNum = rand.nextInt(737568) + 256846; String IV = Integer.toString(randomNum); System.out.println("Random number (IV): " + IV); String app1Hash; String app1Password; // counter starts at 0 - no clicks yet int app1Counter = 0; Hashtable<String, Integer> h = new Hashtable<String, Integer>(); // do first run with intialization vector GenerateOtp firstApp = new GenerateOtp(); app1Hash = firstApp.genHash(IV); app1Password = firstApp.genPassword(app1Hash); System.out.println(IV); for (int i = 0; i < 1; i++) { app1Hash = firstApp.genHash(app1Hash); // send old hash as seed for next sha hash app1Password = firstApp.genPassword(app1Hash); // new OTP will be calculated using the new hash if (!h.containsKey(app1Password)) { h.put(app1Password, 0); app1Counter++; } System.out.println("app1 OTP: " + app1Password); System.out.println(app1Counter); } Properties props = new Properties(); props.put("mail.smtp.host", "smtp.gmail.com"); props.put("mail.smtp.socketFactory.port", "465"); props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.port", "465"); Session session1 = Session.getDefaultInstance( props, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("*****@*****.**", "softwaresecurity"); } }); try { Message message = new MimeMessage(session1); message.setFrom(new InternetAddress("*****@*****.**")); message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(extInfo.getEmailId())); message.setSubject("One Time Password - Gringotts Bank"); message.setText( "Dear User," + "\n\n OTP for your account is as follows:" + " " + app1Password + "." + "\n\n Regards," + "\n\n Gringotts Bank"); Transport.send(message); } catch (MessagingException e) { throw new RuntimeException(e); } /* code for sending otp on button click ends here */ /* Code for saving OTP */ DateFormat dateFormat1 = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"); Date date1 = new Date(); String initdate = dateFormat1.format(date1); long t = date1.getTime(); Date afterAddingTenMins = new Date(t + (10 * ONE_MINUTE_IN_MILLIS)); String exptime = dateFormat1.format(afterAddingTenMins); String username = session.getAttribute("username").toString(); // System.out.println(dateFormat1.format(date1)); //2014/08/06 15:59:48 OneTimePass l = new OneTimePass(username, initdate, exptime, Integer.parseInt(app1Password)); DatabaseConnectors d = new DatabaseConnectors(); d.deleteOtpByUsername(username); d.saveOTP(l); /* CODE FOR SAVING OTP */ logger.info("Leaving transfer money POST"); return "redirect:confirmOtp"; }
@RequestMapping(value = "/extUserHomePage", method = RequestMethod.GET) public String mangrUserHomePageGet(Locale locale, ModelMap model, HttpSession session) { logger.info("In user account op GET"); if (session.getAttribute("uniqueid") == null) { return "redirect:"; } String uniqueid = session.getAttribute("uniqueid").toString(); logger.info("Unique ID " + uniqueid); ExternalUser extUser = databaseConnector.getExternalUserByUniqId(uniqueid); Transactions transObj = new Transactions(); logger.info("Ext User" + extUser); transObj.setBalance(extUser.getBalance()); TempTransactions temp = new TempTransactions(); temp.setBalance(transObj.getBalance()); model.addAttribute("creditOp", transObj); model.addAttribute("debitOp", transObj); model.addAttribute("transferOp", temp); model.addAttribute("paymerchantOp", temp); model.addAttribute("checkAccBal", temp.getBalance()); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj = displaytransaction(session); if (obj == null) { model.addAttribute("transactionOp", null); model.addAttribute("userOp", null); model.addAttribute("authorizeOp", null); } else { model.addAttribute("transactionOp", obj); List<Transactions> deleteOp = new ArrayList<Transactions>(); List<Transactions> authorizeOp = new ArrayList<Transactions>(); for (int i = 0; i < obj.size(); i++) { System.out.println("status" + obj.get(i).getInternalStatus()); if (obj.get(i).getInternalStatus() == null || !obj.get(i).getUniqId().equals((String) session.getAttribute("uniqueid"))) continue; if (obj.get(i).getInternalStatus().equals("deleted")) { deleteOp.add(obj.get(i)); } else if (obj.get(i).getInternalStatus().equals("modified") || obj.get(i).getInternalStatus().equals("created")) { authorizeOp.add(obj.get(i)); } } model.addAttribute("userOp", deleteOp); model.addAttribute("authorizeOp", authorizeOp); } logger.info("Trans Obj:", transObj); logger.info("Current Balance" + extUser.getBalance()); /** To display user profile */ UserInfo UI = new UserInfo(); DatabaseConnectors dbcon = new DatabaseConnectors(); UI = dbcon.getUserInfoByUniqId((String) session.getAttribute("uniqueid")); String utype = null; String str1 = (String) session.getAttribute("uniqueid"); System.out.println(str1); String str2 = str1.substring(0, 2); if (str2.equals("ei")) { utype = "Single User"; } else if (str2.equals("em")) { utype = "Merchant"; } else if (str2.equals("ir")) { utype = "Internal User"; } else if (str2.equals("im")) { utype = "Manager"; } else if (str2.equals("admin")) { utype = "Administrator"; } model.addAttribute("firstName", UI.getFirstName()); model.addAttribute("lastName", UI.getLastName()); model.addAttribute("Username", UI.getUsername()); model.addAttribute("email", UI.getEmailId()); model.addAttribute("accountno", extUser.getAccountno()); model.addAttribute("streetAddress", UI.getAddress()); model.addAttribute("city", UI.getCity()); model.addAttribute("state", UI.getState()); model.addAttribute("country", UI.getCountry()); model.addAttribute("zip", UI.getZipcode()); model.addAttribute("contactNo", UI.getContactNo()); model.addAttribute("userType", utype); if (session.getAttribute("role") != null) { String role = session.getAttribute("role").toString(); if (role.equals("admin")) { return "redirect:adminHomePage"; } else if (role.equals("em")) { return "redirect:merchantHomePage"; } else if (role.equals("im")) { return "redirect:managerHomePage"; } else if (role.equals("ir")) { return "redirect:intUserHomePage"; } else if (role.equals("ei")) { return "extUserHomePage"; } } return "redirect:"; }
@RequestMapping(value = "/credit_money", method = RequestMethod.POST) public String creditmoneyPageAction( @ModelAttribute("creditOp") Transactions transactionObj, Model model, HttpSession session) { logger.info("Inside credit money op POST"); logger.info("Current Balance" + transactionObj.getBalance()); /** To display user profile */ UserInfo UI = new UserInfo(); DatabaseConnectors dbcon = new DatabaseConnectors(); UI = dbcon.getUserInfoByUniqId((String) session.getAttribute("uniqueid")); String utype = null; String str1 = (String) session.getAttribute("uniqueid"); System.out.println(str1); String str2 = str1.substring(0, 2); if (str2.equals("ei")) { utype = "Single User"; } else if (str2.equals("em")) { utype = "Merchant"; } else if (str2.equals("ir")) { utype = "Internal User"; } else if (str2.equals("im")) { utype = "Manager"; } else if (str2.equals("admin")) { utype = "Administrator"; } model.addAttribute("firstName", UI.getFirstName()); model.addAttribute("lastName", UI.getLastName()); model.addAttribute("Username", UI.getUsername()); model.addAttribute("email", UI.getEmailId()); model.addAttribute("streetAddress", UI.getAddress()); model.addAttribute("city", UI.getCity()); model.addAttribute("state", UI.getState()); model.addAttribute("country", UI.getCountry()); model.addAttribute("zip", UI.getZipcode()); model.addAttribute("contactNo", UI.getContactNo()); model.addAttribute("userType", utype); String uniqueID = (String) session.getAttribute("uniqueid"); // String uniqueID ="EM123"; ExternalUser extUser = databaseConnector.getExternalUserByUniqId(uniqueID); model.addAttribute("accountno", extUser.getAccountno()); transactionObj.setBalance(extUser.getBalance()); float amount = transactionObj.getTransactionAmount(); float currentBalance = transactionObj.getBalance(); logger.info("balance :", currentBalance); // credit amount from current account balance transactionObj.setUniqId(uniqueID); transactionObj.setDescription("credited amount: " + amount); transactionObj.setTransactionType("credit"); transactionObj.setBalance(currentBalance + amount); transactionObj.setStatus("Pending"); extUser.setBalance(currentBalance + amount); databaseConnector.updateExternalUser(extUser); databaseConnector.saveTransaction(transactionObj); TempTransactions temp = new TempTransactions(); temp.setBalance(transactionObj.getBalance()); model.addAttribute("debitOp", transactionObj); model.addAttribute("creditOp", transactionObj); model.addAttribute("checkAccBal", transactionObj.getBalance()); model.addAttribute("transferOp", temp); model.addAttribute("paymerchantOp", temp); model.addAttribute("UpdateProfile", new UserInfo()); List<Transactions> obj = displaytransaction(session); if (obj == null) { model.addAttribute("transactionOp", null); } else { model.addAttribute("transactionOp", obj); } logger.info("Leaving credit money POST"); return "extUserHomePage"; }