PrintBill.java
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package fi.insomnia.bortal.servlet;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import fi.insomnia.bortal.beans.BillBeanLocal;
import fi.insomnia.bortal.beans.EventBeanLocal;
import fi.insomnia.bortal.model.Bill;
/**
* Servlet implementation class PrintBill
*/
public class PrintBill extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final String BILL_ID = "billid";
@EJB
private BillBeanLocal billentity;
@EJB
private EventBeanLocal eventbean;
/**
* @see HttpServlet#HttpServlet()
*/
public PrintBill() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ouput(request, response);
}
private void ouput(HttpServletRequest request, HttpServletResponse response) throws IOException {
Integer billid = getIntegerParameter(request, BILL_ID);
Bill bill = billentity.findById( billid);
if (bill == null) {
return;
}
ByteArrayOutputStream billstream = billentity.getPdfBillStream(bill);
if (billstream == null) {
return;
}
response.setContentLength(billstream.size());
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "filename=Bill-" + bill.getBillNumber() + ".pdf");
ServletOutputStream ostream = response.getOutputStream();
billstream.writeTo(ostream);
ostream.close();
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ouput(request, response);
}
/***
* Convert request parameter into integer
*
* @param request
* @param parameter
* @return
*/
private static Integer getIntegerParameter(HttpServletRequest request, String parameter) {
try {
String valueString = request.getParameter(parameter);
Integer value = Integer.parseInt(valueString);
return value;
} catch (NumberFormatException nfe) {
}
return null;
}
}