Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.impala.paga.all; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.gson.JsonElement; import com.google.gson.JsonParser; import com.impala.paga.util.PostWithIgnoreSSLPaga; import java.io.IOException; import java.io.OutputStream; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.IOUtils; import org.apache.commons.lang3.StringUtils; import org.json.JSONException; import org.json.JSONObject; /** * * @author mulikevs */ @WebServlet(name = "BankDeposit", urlPatterns = { "/BankDeposit" }) public class BankRouteRemit1 extends HttpServlet { private PostWithIgnoreSSLPaga PostWithIgnoreSSLPaga; private String statuscode = "00032"; private String Statusdescription = "INTERNAL_SERVER_ERROR"; JSONObject toPaga = new JSONObject(); private String CLIENT_URL = ""; /** * * @param config * @throws ServletException */ @Override public void init(ServletConfig config) throws ServletException { super.init(config); } /** * * @param request * @param response * @throws ServletException * , IOException */ @Override public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { OutputStream out = response.getOutputStream(); response.setContentType("text/plain;charset=UTF-8"); response.setDateHeader("Expires", new Date().getTime()); // Expiration // date response.setDateHeader("Date", new Date().getTime()); // Date and time try { // that the // message was // sent out.write(moneytransfer(request).getBytes()); } catch (JSONException ex) { Logger.getLogger(BankRouteRemit1.class.getName()).log(Level.SEVERE, null, ex); } catch (NoSuchAlgorithmException ex) { Logger.getLogger(BankRouteRemit1.class.getName()).log(Level.SEVERE, null, ex); } out.flush(); out.close(); } /** * * @param request * @return * @throws IOException */ private String moneytransfer(HttpServletRequest request) throws IOException, JSONException, NoSuchAlgorithmException { // joined json string String join = ""; JsonElement root = null; JsonElement root2 = null; JsonElement root3 = null; String responseobject = ""; String remiturl = "https://www.mypaga.com/paga-webservices/business-rest/secured/depositToBank"; String hashkey = "372e9b1c62ef47db83c566cf2db033cb4e1b847e12ec435997971ebd7ab8121cbd8458176374480eae7d4cb55f722f4ab328207b461f423a85a9bbad8850ce66"; String principal = "02A10715-0E53-4A8C-982E-2B7BFC7CF550"; String credentials = "QE3@u=jd*2b+"; // These represent parameters received over the network String referenceNumber = "", amount = "", currency = "", destinationBankUUID = "", destinationBankAccountNumber = "", recipientPhoneNumber = ""; // Get all parameters, the keys of the parameters are specified List<String> lines = IOUtils.readLines(request.getReader()); // used to format/join incoming JSon string join = StringUtils.join(lines.toArray(), ""); //############################################################################### // instantiate the JSon //Note //The = sign is encoded to \u003d. Hence you need to use disableHtmlEscaping(). //############################################################################### Gson g = new GsonBuilder().disableHtmlEscaping().create(); //Gson g = new Gson(); Map<String, String> expected = new HashMap<>(); try { // parse the JSon string root = new JsonParser().parse(join); referenceNumber = root.getAsJsonObject().get("referenceNumber").getAsString(); amount = root.getAsJsonObject().get("amount").getAsString(); currency = root.getAsJsonObject().get("currency").getAsString(); destinationBankAccountNumber = root.getAsJsonObject().get("destinationBankAccountNumber").getAsString(); destinationBankUUID = root.getAsJsonObject().get("destinationBankUUID").getAsString(); recipientPhoneNumber = root.getAsJsonObject().get("recipientPhoneNumber").getAsString(); } catch (Exception e) { expected.put("command_status", "COMMANDSTATUS_INVALID_PARAMETERS"); String jsonResult = g.toJson(expected); System.out.println(e); return jsonResult; } /*String referenceNumber = "", amount = "",currency="",destinationBankUUID="", destinationBankAccountNumber= "", recipientPhoneNumber = "" , credentials = "";*/ // check for the presence of all required parameters if (StringUtils.isBlank(referenceNumber) || StringUtils.isBlank(amount) || StringUtils.isBlank(currency) || StringUtils.isBlank(destinationBankUUID) || StringUtils.isBlank(destinationBankAccountNumber) || StringUtils.isBlank(recipientPhoneNumber)) { expected.put("am_referenceid", referenceNumber); expected.put("am_timestamp", "tombwa"); expected.put("status_code", statuscode); expected.put("status_description", Statusdescription); String jsonResult = g.toJson(expected); return jsonResult; } MessageDigest md = null; String saltedToken = referenceNumber + amount + destinationBankUUID + destinationBankAccountNumber + hashkey; md = MessageDigest.getInstance("SHA-512"); md.update(saltedToken.getBytes()); byte byteData[] = md.digest(); //convert the byte to hex format method 1 StringBuffer sb = new StringBuffer(); for (int i = 0; i < byteData.length; i++) { sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1)); } System.out.println("Hex format : " + sb.toString()); String hash = sb.toString(); Double intamount = Double.parseDouble(amount); /*{ referenceNumber": "", "amount": "", "currency": "", "destinationBankUUID": "","destinationBankAccountNumber": "", "recipientPhoneNumber": ""} */ toPaga.put("referenceNumber", referenceNumber); toPaga.put("amount", amount); toPaga.put("currency", currency); toPaga.put("destinationBankUUID", destinationBankUUID); toPaga.put("destinationBankAccountNumber", destinationBankAccountNumber); toPaga.put("recipientPhoneNumber", recipientPhoneNumber); //toVitesse.put("source","IMPALAPAY"); System.out.println(toPaga.toString()); //assign the remit url from properties.config CLIENT_URL = remiturl; //principal = "" , credentials = "", hash = "" PostWithIgnoreSSLPaga = new PostWithIgnoreSSLPaga(CLIENT_URL, toPaga.toString(), principal, credentials, hash); //capture the switch respoinse. responseobject = PostWithIgnoreSSLPaga.doPost(); System.out.println(responseobject); //pass the returned json string JsonElement roots = new JsonParser().parse(responseobject); int responseCode = roots.getAsJsonObject().get("responseCode").getAsInt(); String switchresponse = Integer.toString(responseCode); //exctract a specific json element from the object(status_code) String statusdescription = roots.getAsJsonObject().get("message").getAsString(); //add String success = "S001"; if (responseCode == 0) { expected.put("am_referenceid", referenceNumber); expected.put("am_timestamp", success); expected.put("status_code", "S001"); expected.put("status_description", statusdescription); String jsonResult = g.toJson(expected); return jsonResult; } expected.put("am_referenceid", ""); expected.put("am_timestamp", responseCode + ""); expected.put("status_code", "00029"); expected.put("status_description", statusdescription); String jsonResult = g.toJson(expected); return jsonResult; } /** * * @param request * @param response * @throws ServletException * , IOException */ @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request, response); } }