Am 30.11.2005 um 22:20 schrieb Stefan Pantke:
I need to compose PDF output based on certain input,
For anybody interested, here is a snippet for outputting PDF
using iText - probably not the nicest solution, but for a newbie,
this might
be a nice starting point:
>>>
//
// 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 );
try {
// step 2:
// we create a writer that listens to the
document
// and directs a PDF-stream to a file
// step 3: we open the document
document.open();
// step 4: we add some content
document.add(new Paragraph("To create a document in landscape
format, just make the height smaller than the width. For instance by
rotating the PageSize Rectangle: PageSize.A4.rotate()"));
document.setPageSize(PageSize.A4);
document.newPage();
document.add(new Paragraph("This is portrait
again"));
document.add(new Paragraph("Hello World"));
document.add(new Paragraph(new Date().toString()));
Chunk c;
c = new Chunk("background");
c.setBackground(new Color(0xC0, 0xC0, 0xC0));
document.add(c);
// the 14 standard fonts in PDF: do not use this Font
constructor!
// this is for demonstration purposes only, use
FontFactory!
Font[] fonts = new Font[14];
fonts[0] = new Font(Font.COURIER, Font.DEFAULTSIZE,
Font.NORMAL);
fonts[1] = new Font(Font.COURIER, Font.DEFAULTSIZE,
Font.ITALIC);
fonts[2] = new Font(Font.COURIER, Font.DEFAULTSIZE,
Font.BOLD);
fonts[3] = new Font(Font.COURIER, Font.DEFAULTSIZE, Font.BOLD |
Font.ITALIC);
fonts[4] = new Font(Font.HELVETICA, Font.DEFAULTSIZE,
Font.NORMAL);
fonts[5] = new Font(Font.HELVETICA, Font.DEFAULTSIZE,
Font.ITALIC);
fonts[6] = new Font(Font.HELVETICA, Font.DEFAULTSIZE,
Font.BOLD);
fonts[7] = new Font(Font.HELVETICA, Font.DEFAULTSIZE,
Font.BOLDITALIC);
fonts[8] = new Font(Font.TIMES_ROMAN, Font.DEFAULTSIZE,
Font.NORMAL);
fonts[9] = new Font(Font.TIMES_ROMAN, Font.DEFAULTSIZE,
Font.ITALIC);
fonts[10] = new Font(Font.TIMES_ROMAN,
Font.DEFAULTSIZE, Font.BOLD);
fonts[11] = new Font(Font.TIMES_ROMAN, Font.DEFAULTSIZE,
Font.BOLDITALIC);
fonts[12] = new Font(Font.SYMBOL);
fonts[13] = new Font(Font.ZAPFDINGBATS);
// add the content
for (int i = 0; i < 14; i++) {
document.add(new Paragraph("quick brown fox jumps over the lazy
dog", fonts[i]));
}
}
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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