Pdf and servlet : Servlet « PDF « Java Tutorial

1. Java Tutorial
2. PDF
3. Servlet

import java.io.IOException;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Paragraph;
import com.lowagie.text.html.HtmlWriter;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.rtf.RtfWriter2;


public class HelloWorldServlet extends HttpServlet {
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws IOException, ServletException {

    String presentationtype = request.getParameter("presentationtype");

    Document document = new Document();
    try {
      if ("pdf".equals(presentationtype)) {
        response.setContentType("application/pdf");
        PdfWriter.getInstance(document, response.getOutputStream());
      } else if ("html".equals(presentationtype)) {
        response.setContentType("text/html");
        HtmlWriter.getInstance(document, response.getOutputStream());
      } else if ("rtf".equals(presentationtype)) {
        response.setContentType("text/rtf");
        RtfWriter2.getInstance(document, response.getOutputStream());
      } 

      document.open();

      document.add(new Paragraph("Hello World"));
      document.add(new Paragraph(new Date().toString()));
    } catch (DocumentException de) {
      de.printStackTrace();
      System.err.println("document: " + de.getMessage());
    }

    document.close();
  }

}