edu.jhu.jmontan.hw5.CostAsPdf.java Source code

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Here is the source code for edu.jhu.jmontan.hw5.CostAsPdf.java

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/*
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package edu.jhu.jmontan.hw5;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.http.HttpSession;

/**
 *
 * @author montana
 */
public class CostAsPdf 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("application/pdf");
        HttpSession session = request.getSession();
        LineItemReceipt receipt = (LineItemReceipt) session.getAttribute("receipt");
        User user = (User) session.getAttribute("user");
        try {
            Document document = new Document();
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            PdfWriter.getInstance(document, buffer);

            document.open();
            document.add(new Paragraph("JOHN HOPKINS ANNUAL SOFTWARE DEVELOPMENT SEMINAR"));
            document.add(new Paragraph(user.getName()));
            document.add(new Paragraph("You are registered for the following courses as a "
                    + user.getFormattedEmploymentStatus() + ":"));
            PdfPTable table = new PdfPTable(2);
            table.addCell("Course");
            table.addCell("Cost");
            for (LineItem lineItem : receipt.getLineItems()) {
                table.addCell(lineItem.getName());
                table.addCell("$" + lineItem.getCost());
            }
            table.addCell("Total");
            table.addCell("$" + receipt.getTotal());
            document.add(table);
            document.close();
            DataOutput output = new DataOutputStream(response.getOutputStream());
            byte[] bytes = buffer.toByteArray();
            response.setContentLength(bytes.length);
            for (int i = 0; i < bytes.length; i++) {
                output.writeByte(bytes[i]);
            }
        } catch (DocumentException ex) {
            Logger.getLogger(CostAsPdf.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    // <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);
    }

    /**
     * Handles the HTTP <code>POST</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 doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}