com.impala.paga.all.QueryMobileOperators.java Source code

Java tutorial

Introduction

Here is the source code for com.impala.paga.all.QueryMobileOperators.java

Source

/*
 * 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.Properties;
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 = "GetMobileOperators", urlPatterns = { "/GetMobileOperators" })
public class QueryMobileOperators 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(QueryMobileOperators.class.getName()).log(Level.SEVERE, null, ex);
        } catch (NoSuchAlgorithmException ex) {
            Logger.getLogger(QueryMobileOperators.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 = "";
        Properties prop = new Properties();
        String hashkey = prop.getProperty("hashkey");
        String principal = prop.getProperty("principal");
        String credentials = prop.getProperty("credentials");
        String remiturlss = "";
        // 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 = "";

        // 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);

            remiturlss = root.getAsJsonObject().get("remiturlss").getAsString();
            referenceNumber = root.getAsJsonObject().get("referenceNumber").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)) {

            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 + 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();

        /*{ referenceNumber": "", "amount": "", "currency": "",
        "destinationBankUUID": "","destinationBankAccountNumber": "", 
        "recipientPhoneNumber": ""}
        */

        toPaga.put("referenceNumber", referenceNumber);

        //toVitesse.put("source","IMPALAPAY");

        System.out.println(toPaga.toString());

        //assign the remit url from properties.config
        CLIENT_URL = remiturlss;
        //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);

        //exctract a specific json element from the object(status_code)
        int switchresponse = roots.getAsJsonObject().get("responseCode").getAsInt();

        //exctract a specific json element from the object(status_code)
        String statusdescription = roots.getAsJsonObject().get("message").getAsString();

        expected.put("am_referenceid", "");
        expected.put("am_timestamp", "");
        expected.put("status_code", switchresponse + "");
        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);
    }

}