Reputation: 311
I have just upgraded PDFBox version from 1.8 to 2.0.
Migration says that .convertToImage()
has been removed and there is no a line in their example code for BufferedImage
, but it is used in .writeImage()
Their code:
PDDocument document = PDDocument.load(new File(pdfFilename));
PDFRenderer pdfRenderer = new PDFRenderer(document);
int pageCounter = 0;
for (PDPage page : document.getPages())
{
pdfRenderer.renderImageWithDPI(pageCounter, 300, ImageType.RGB);
// suffix in filename will be used as the file format
ImageIOUtil.writeImage(bim, pdfFilename + "-" + (pageCounter++) + ".png", 300);
}
document.close();
I believe BufferedImage is used in ImageIOUtil.writeImage(bim, pdfFilename + "-" + (pageCounter++) + ".png", 300);
as bim
. How should I implement BufferedImage if they have removed .convertToImage()
?
Second thing is about .decrypt()
. They have not mentioned about .decrypt()
. What should I use instead of .decrypt()
?
My whole code:
try {
String sourceDir = "/home/linux/books/text.pdf";
File sourceFile = new File(sourceDir);
PDDocument document = PDDocument.load(sourceFile);
PDFRenderer pdfRenderer = new PDFRenderer(document);
if (document.isEncrypted()) {
try {
System.out.println("Trying to decrypt it...");
document.decrypt("");
// error says: The method decrypt(String) is undefined for the type PDDocument.
// it was working on pdfbox 1.8.
document.setAllSecurityToBeRemoved(true);
System.out.println("The file has been decrypted in .");
}
catch (Exception e) {
throw new Exception("cannot be decrypted. ", e);
}
}
PDPage firstPage = (PDPage) document.getDocumentCatalog().getPages().get(0);
pdfRenderer.renderImageWithDPI(0, 300, ImageType.RGB);
String fileName = sourceFile.getName().replace(".pdf", "");
BufferedImage image = firstPage.convertToImage(BufferedImage.TYPE_INT_RGB, 300);
ImageIOUtil.writeImage(image , fileName+".jpg",300);
document.close();
} catch (Exception e) {
e.printStackTrace();
}
Getting Started content is under construction. That is why I cannot check my problems.
Upvotes: 2
Views: 2589
Reputation: 96074
I believe
BufferedImage
is used inImageIOUtil.writeImage(bim, pdfFilename + "-" + (pageCounter++) + ".png", 300);
asbim
. How should I implement BufferedImage if they have removed.convertToImage()
?
Actually there is a tiny bit missing in the migration guide, it should be
BufferedImage bim = pdfRenderer.renderImageWithDPI(pageCounter, 300, ImageType.RGB);
instead of
pdfRenderer.renderImageWithDPI(pageCounter, 300, ImageType.RGB);
Second thing is about
.decrypt()
. They have not mentioned about.decrypt()
. What should I use instead of.decrypt()
?
PDDocument
now has multiple load
overloads which also accept a password, e.g.
/**
* Parses a PDF. Unrestricted main memory will be used for buffering PDF streams.
*
* @param file file to be loaded
* @param password password to be used for decryption
*
* @return loaded document
*
* @throws IOException in case of a file reading or parsing error
*/
public static PDDocument load(File file, String password) throws IOException
or
/**
* Parses a PDF. The given input stream is copied to the memory to enable random access to the pdf.
* Unrestricted main memory will be used for buffering PDF streams.
*
* @param input stream that contains the document.
* @param password password to be used for decryption
*
* @return loaded document
*
* @throws IOException in case of a file reading or parsing error
*/
public static PDDocument load(InputStream input, String password)
throws IOException
Upvotes: 2