Play Framework IText

gistfile1.java

ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
PdfReader reader = new PdfReader(pdfYExcelStream);

Rectangle psize = reader.getPageSize(1); 
Document document = new Document(PageSize.A4);
reader.getPageContent(1);

PdfWriter writer = PdfWriter.getInstance(document, outputStream);
writer.addPageDictEntry(PdfName.ROTATE, PdfPage.LANDSCAPE);

document.open();

PdfContentByte cb = writer.getDirectContent();
PdfImportedPage page = writer.getImportedPage(reader, 1);


int cantidadPaginas =  Math.round( psize.getWidth() / 800 );
System.out.println("hancho!! "+page.getWidth());
System.out.println("cantidad paginas    " + cantidadPaginas);
System.out.println("ancho original!! "+psize.getWidth());


//// Página final
//document.setPageSize(PageSize.A4.rotate()); //-document.getPageSize().getWidth()
//document.newPage();
//AffineTransform afinit = new AffineTransform(0, -1, 1, 0, -32800, 600); // equivale a 11 paginas mas!
//cb.addTemplate(page,afinit);

/////////////////////////////////////////

int totalAnchoDePaginas = 800*cantidadPaginas;

System.out.println("total del ancho de las paginas!!" + totalAnchoDePaginas);

//int tt = -32800 - 800;
int tt = -totalAnchoDePaginas - 800;

for(int p = 1; p <=totalAnchoDePaginas; p++){
	
	tt = tt + 800;
	
	document.setPageSize(PageSize.A4.rotate());
	document.newPage();
	AffineTransform af = new AffineTransform(0, -1, 1, 0, tt, 600);
	cb.addTemplate(page, af);
	
	if(tt == 0){
		break;
	}
	
}

document.close();
writer.flush();
writer.close();
outputStream.close();


ByteArrayOutputStream out = new ByteArrayOutputStream();
out.flush();
out.write(outputStream.toByteArray());
out.close();

// de output a input!!
InputStream resultadoPDF = new ByteArrayInputStream(out.toByteArray());

renderBinary(resultadoPDF, "ReporteDeDistribucionClasesPorHoras.pdf",
		"application/pdf", true);