[Snippet] Creating on-demand PDF using iText

• Subject: [Snippet] Creating on-demand PDF using iText
• From: Stefan Pantke <email@hidden>
• Date: Thu, 1 Dec 2005 02:03:28 +0100
• Delivered-to: email@hidden
• Delivered-to: email@hidden

Am 30.11.2005 um 22:20 schrieb Stefan Pantke:

I need to compose PDF output based on certain input,

>>>
//
// Main.java: Class file for WO Component 'Main'
// Project dprint
//
// Created by sp on 30.11.05
//

import com.webobjects.foundation.*;
import com.webobjects.appserver.*;
import com.webobjects.eocontrol.*;
import com.webobjects.eoaccess.*;
import com.webobjects.foundation.NSData;

// for iText
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.*;
import java.util.Date;
import java.awt.Color;

import com.lowagie.text.*;
import com.lowagie.text.pdf.PdfWriter;

 class TAPDFComponent extends WOComponent {
	private String _contentType = "application/pdf";
	
	public TAPDFComponent(WOContext context) {
		super(context);
	}
	public void setContentType(String aType) {
		_contentType = aType;
	}

	public String contentType() {
		return _contentType;
	}

	public void appendToResponse(WOResponse response, WOContext context) {
		// Voir page suivante …

		// Document document = new Document(PageSize.A4.rotate());
		Document document = new Document( PageSize.A4 );

        ByteArrayOutputStream oBuffer = new ByteArrayOutputStream();
		try {
			PdfWriter.getInstance( document, oBuffer );

			Chunk c;
			c = new Chunk("background");
			c.setBackground(new Color(0xC0, 0xC0, 0xC0));
			document.add(c);
			

				
			}
			catch(DocumentException de) {
				System.err.println("Document problem: " + de.getMessage());
			} catch ( Exception ex) {
				System.err.println("Document problem 2: " + ex.getMessage());
			}
			
			// step 5: we close the document
			document.close();

			// we need to prepare NSData instead of String, since we are going to
			// output arbitraty data
			response.setContent( new NSData( oBuffer.toByteArray() ) );

			response.setHeader("application/pdf", "Content-Type");
		} catch ( Exception ex) {
			System.err.println("PDFWriter not inited: " + ex.getMessage());
		}

	}
}

public class Main extends TAPDFComponent { // WOComponent {

    public Main(WOContext context) {
        super(context);
    }

    public WOComponent generateTestPDF()
    {

        return null;
    }

}
<<<

Don't forget to install the iText JAR found here

	http://www.lowagie.com/iText/

in

	/Library/Java/Extensions

or another JAVA-well known place.

Cheers,

Stefan

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