servlets.UploadInventoryServlet.java Source code

Introduction

Here is the source code for servlets.UploadInventoryServlet.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 servlets;

import DB.InventoryDB;
import DB.ReportDB;
import DB.SalesDB;
import Entities.Inventory;
import Entities.Report;
import Entities.Sales;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.sql.Blob;
import java.util.ArrayList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import static org.apache.poi.hssf.usermodel.HeaderFooter.file;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;

/**
 *
 * @author Klvn Flrs
 */
@MultipartConfig(maxFileSize = 16177215)
public class UploadInventoryServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {

        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        System.out.println("TEST");

        InputStream inputStream = null;
        Part filePart = request.getPart("file");

        inputStream = filePart.getInputStream();

        POIFSFileSystem fs = new POIFSFileSystem(inputStream);

        //       FileInputStream fichier = new FileInputStream(new File("countries.xls"));
        //create workbook instance that refers to xlsx file
        HSSFWorkbook wb = new HSSFWorkbook(fs);
        HSSFSheet sheet = wb.getSheetAt(0);

        FormulaEvaluator formulaEvaluator = wb.getCreationHelper().createFormulaEvaluator();
        ArrayList<Inventory> arrInventory = new ArrayList<>();

        ReportDB reportDB = new ReportDB();
        reportDB.addReport(new Report("Inventory", "Pending"));
        ArrayList<Report> reportList = new ArrayList();
        reportList = reportDB.getAllReports();
        int ReportRef = reportList.size();
        for (Row ligne : sheet) {//iterate rows
            Inventory inventory = new Inventory();
            for (Cell cell : ligne) {//iterate columns
                //cell type
                /* Sales sales;
                (lagay sa sys out)
                sales.setSalesID(cell.getNumericCellValue());
                --- WALA TO */

                switch (formulaEvaluator.evaluateInCell(cell).getCellType()) {
                case Cell.CELL_TYPE_NUMERIC:
                    //   sales.setName(cell.getNumericCellValue());
                    System.out.print("cell 1  " + cell.getNumericCellValue() + " \t");

                    if (cell.getColumnIndex() == 1) {

                        inventory.setQuantityOnHand((int) cell.getNumericCellValue());
                    }

                    if (cell.getColumnIndex() == 2) {

                        inventory.setGrandTotal((int) cell.getNumericCellValue());
                    }

                    if (cell.getColumnIndex() == 3) {

                        inventory.setBatchNo((int) cell.getNumericCellValue());
                    }
                    if (cell.getColumnIndex() == 6) {

                        inventory.setAvemonTO(cell.getNumericCellValue());
                    }
                    break;
                case Cell.CELL_TYPE_STRING:
                    System.out.print("cell 2  " + cell.getStringCellValue() + " \t");
                    if (cell.getColumnIndex() == 0) {

                        inventory.setBrandName(cell.getStringCellValue());
                    }
                    if (cell.getColumnIndex() == 4) {

                        inventory.setExpDate(cell.getStringCellValue());
                    }
                    if (cell.getColumnIndex() == 5) {

                        inventory.setShelfLife(cell.getStringCellValue());
                    }

                    if (cell.getColumnIndex() == 7) {

                        inventory.setInventoryMonths(cell.getStringCellValue());
                    }
                    break;
                }
            }
            inventory.setReportRef(ReportRef);
            arrInventory.add(inventory);
            System.out.println();
        }

        request.setAttribute("arrInventory", arrInventory);
        InventoryDB inventoryDB = new InventoryDB();
        request.setAttribute("arrInventory", arrInventory);
        for (int j = 0; j < arrInventory.size(); j++) {
            inventoryDB.addInventory(arrInventory.get(j));
        }

        ServletContext context = getServletContext();
        RequestDispatcher rd = context.getRequestDispatcher("/isrAfteruploadInventory.jsp");
        rd.forward(request, response);
        processRequest(request, response);
    }

    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}