Java de Pdf a Tiff Ejemplo
Para pasar archivos PDF a imágenes TIFF, se puede usar llamando a la aplicación GhostScript desde java por ejemplo con el comando gs -o output.tiff -sDEVICE=tiffg4 -r600 mydpf.pdf pero prefería una solución completamente Java.
1 - Descarga las Liberías Necesarias.
- ICEPdf una librería para trabajar con PDF desde java que puede pasar los PDF a imágenes. El formato TIFF no funciona por si sólo con esta librería (por lo menos hasta la versión 5.0.5).
- Java Advanced Imaging package (jai_core.jar y jai_imageio.jar) Jai 1.1.3 y Jai-imageio 1.1
Descargar todas las liberías del ejemplo aquí
2 - Comprueba que puedes Ver Archivos TIFF .
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
public class LoadAndShow extends JPanel {
private static final long serialVersionUID = 1342432423424L;
private static final String PATH = "/change/to/your/path/test.tif";
private BufferedImage image;
private Dimension size = new Dimension();
public LoadAndShow(BufferedImage image) {
this.image = image;
size.setSize(image.getWidth(), image.getHeight());
}
protected void paintComponent(Graphics g) {
int x = (getWidth() - size.width) / 2;
int y = (getHeight() - size.height) / 2;
g.drawImage(image, x, y, this);
}
public Dimension getPreferredSize() {
return size;
}
public static void main(String[] args) throws IOException {
BufferedImage image = ImageIO.read(new File(PATH));
LoadAndShow test = new LoadAndShow(image);
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new JScrollPane(test));
f.setSize(400, 400);
f.setLocation(200, 200);
f.setVisible(true);
}
}
3 - Convierte tus PDF a TIFFs
import java.awt.image.*;
import java.io.*;
import javax.imageio.ImageIO;
import org.icepdf.core.exceptions.*;
import org.icepdf.core.pobjects.*;
import org.icepdf.core.util.GraphicsRenderingHints;
public class TestPDF {
private static final String FILEPATH = "/change/to/your/path/mypdf.pdf";
public static void main(String[] args) {
Document document = new Document();
try {
document.setFile(FILEPATH);
} catch (PDFException ex) {
System.out.println("Error parsing PDF document " + ex);
} catch (PDFSecurityException ex) {
System.out.println("Error encryption not supported " + ex);
} catch (FileNotFoundException ex) {
System.out.println("Error file not found " + ex);
} catch (IOException ex) {
System.out.println("Error IOException " + ex);
}
float scale = 1.0f;
float rotation = 0f;
for (int i = 0; i < document.getNumberOfPages(); i++) {
BufferedImage image = (BufferedImage) document.getPageImage(
i, GraphicsRenderingHints.PRINT, Page.BOUNDARY_CROPBOX, rotation, scale);
RenderedImage rendImage = image;
try {
System.out.println(" capturing page " + i);
File file = new File("imageCapture1_" + i + ".tif");
ImageIO.write(rendImage, "tiff", file);
} catch (IOException e) {
e.printStackTrace();
}
image.flush();
}
document.dispose();
}
}
Tiff para Fax (ICEPDF Apache Example)
* Copyright 2006-2012 ICEsoft Technologies Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an "AS
* IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either * express or implied. See the License for the specific language
* governing permissions and limitations under the License.
*/
import org.icepdf.core.pobjects.Document;
import org.icepdf.core.pobjects.Page;
import org.icepdf.core.pobjects.PDimension;
import org.icepdf.core.exceptions.PDFException;
import org.icepdf.core.exceptions.PDFSecurityException;
import org.icepdf.core.util.GraphicsRenderingHints;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.IIOImage;
import javax.imageio.ImageWriteParam;
import javax.imageio.stream.ImageOutputStream;
import java.awt.image.BufferedImage;
import java.awt.image.IndexColorModel;
import java.awt.image.DataBuffer;
import java.awt.*;
import java.io.*;
import java.util.Iterator;
/**
* The <code>MultiPageCapture</code> class is an example of how to save page
* captures to disk. A PDF, specified at the command line, is opened, and
* every page in the document is captured as an image and saved into one
* multi-page group 4 fax TIFF graphics file.
*
* @since 4.0
*/
public class MultiPageCapture {
public static final double FAX_RESOLUTION = 200.0;
public static final double PRINTER_RESOLUTION = 300.0;
// This compression type may be wpecific to JAI ImageIO Tools
public static final String COMPRESSION_TYPE_GROUP4FAX = "CCITT T.6";
public static void main(String[] args) {
// Verify that ImageIO can output TIFF
Iterator<ImageWriter> iterator = ImageIO.getImageWritersByFormatName("tiff");
if (!iterator.hasNext()) {
System.out.println(
"ImageIO missing required plug-in to write TIFF files. " +
"You can download the JAI ImageIO Tools from: " +
"https://jai-imageio.dev.java.net/");
return;
}
boolean foundCompressionType = false;
for(String type : iterator.next().getDefaultWriteParam().getCompressionTypes()) {
if (COMPRESSION_TYPE_GROUP4FAX.equals(type)) {
foundCompressionType = true;
break;
}
}
if (!foundCompressionType) {
System.out.println(
"TIFF ImageIO plug-in does not support Group 4 Fax " +
"compression type ("+COMPRESSION_TYPE_GROUP4FAX+")");
return;
}
// Get a file from the command line to open
String filePath = args[0];
// open the url
Document document = new Document();
try {
document.setFile(filePath);
} catch (PDFException ex) {
System.out.println("Error parsing PDF document " + ex);
} catch (PDFSecurityException ex) {
System.out.println("Error encryption not supported " + ex);
} catch (FileNotFoundException ex) {
System.out.println("Error file not found " + ex);
} catch (IOException ex) {
System.out.println("Error handling PDF document " + ex);
}
try {
// save page caputres to file.
File file = new File("imageCapture.tif");
ImageOutputStream ios = ImageIO.createImageOutputStream(file);
ImageWriter writer = ImageIO.getImageWritersByFormatName("tiff").next();
writer.setOutput(ios);
// Paint each pages content to an image and write the image to file
for (int i = 0; i < document.getNumberOfPages(); i++) {
final double targetDPI = PRINTER_RESOLUTION;
float scale = 1.0f;
float rotation = 0f;
// Given no initial zooming, calculate our natural DPI when
// printed to standard US Letter paper
PDimension size = document.getPageDimension(i, rotation, scale);
double dpi = Math.sqrt((size.getWidth()*size.getWidth()) +
(size.getHeight()*size.getHeight()) ) /
Math.sqrt((8.5*8.5)+(11*11));
// Calculate scale required to achieve at least our target DPI
if (dpi < (targetDPI-0.1)) {
scale = (float) (targetDPI / dpi);
size = document.getPageDimension(i, rotation, scale);
}
int pageWidth = (int) size.getWidth();
int pageHeight = (int) size.getHeight();
int[] cmap = new int[] { 0xFF000000, 0xFFFFFFFF };
IndexColorModel cm = new IndexColorModel(
1, cmap.length, cmap, 0, false, Transparency.BITMASK,
DataBuffer.TYPE_BYTE);
BufferedImage image = new BufferedImage(
pageWidth, pageHeight, BufferedImage.TYPE_BYTE_BINARY, cm);
Graphics g = image.createGraphics();
document.paintPage(
i, g, GraphicsRenderingHints.PRINT, Page.BOUNDARY_CROPBOX,
rotation, scale);
g.dispose();
// capture the page image to file
IIOImage img = new IIOImage(image, null, null);
ImageWriteParam param = writer.getDefaultWriteParam();
param.setCompressionMode(param.MODE_EXPLICIT);
param.setCompressionType(COMPRESSION_TYPE_GROUP4FAX);
if (i == 0) {
writer.write(null, img, param);
}
else {
writer.writeInsert(-1, img, param);
}
image.flush();
}
ios.flush();
ios.close();
writer.dispose();
}
catch(IOException e) {
System.out.println("Error saving file " + e);
e.printStackTrace();
}
// clean up resources
document.dispose();
}
}
4 - TIFFs file to PDF (IText)
import java.io.FileOutputStream;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.io.FileChannelRandomAccessSource;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.RandomAccessFileOrArray;
import com.itextpdf.text.pdf.codec.TiffImage;
public class Test1 {
public static void main(String[] args) throws Exception {
RandomAccessFile aFile = new RandomAccessFile("/myfolder/origin.tif", "r");
FileChannel inChannel = aFile.getChannel();
FileChannelRandomAccessSource fcra = new FileChannelRandomAccessSource(inChannel);
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream("/myfolder/destination.pdf"));
document.open();
RandomAccessFileOrArray rafa = new RandomAccessFileOrArray(fcra);
int pages = TiffImage.getNumberOfPages(rafa);
Image image;
for (int i = 1; i <= pages; i++) {
image = TiffImage.getTiffImage(rafa, i);
Rectangle pageSize = new Rectangle(image.getWidth(), image.getHeight());
document.setPageSize(pageSize);
document.newPage();
document.add(image);
}
document.close();
aFile.close();
}
}
Notas
- Puede que necesites usar ImageIO.scanForPlugins si no te reconoce el plug-in, normalmente contenedores web o servidores de aplicaciones web.
- Puede que te lleve bastante tiempo mostrar un TIFF si es muy pesado desde Java.
- Puede ocurrir un java.lang.NullPointerException si las librerias no están classpath.
- Puedes convertir a otros muchos formatos sin JAI como por ejemplo JPEG o PNG cambia la línea del ImageIO ej. ImageIO.write(rendImage, "png", file);
