Use the constructor PdfReader(RandomAccessFileOrArray, byte[]). > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of yuexiang zhang > Sent: Friday, September 02, 2005 4:41 PM > To: itext-questions@lists.sourceforge.net > Subject: [iText-questions] out of memory error when Splitting > file which contains over 1000 pages > > I use iText to split pdf file into small files who only > contains one page. > When splitting file which contains over 1000 pages, my > program throws out of memory error. > First time I thought error caused by > "writer.getImportedPage(reader, pageCounter);" which > cached every page imported. so I got rid of the line > "importedPages.put(reader, inst);". > But memory error still happend without nothing chaged! > Who can tell me why? > > there are my code: > > > public class PDFSplitor { > > public PDFSplitor(){ > } > > /** > * Set PDF file name to special to split > * @param fileName PDF file name > * @exception java.io.IOException if an I/O error occurs > */ > public void setFile(String fileName) throws IOException{ > pdfFile = new File(fileName); > if( !pdfFile.exists() || !pdfFile.isFile() ){ > pdfFile = null; > throw new IOException(fileName + "not find!"); > } > else{ > reader = new PdfReader(fileName); > document = new Document(reader.getPageSizeWithRotation(1)); > pageNumber = reader.getNumberOfPages(); > //writer = PdfWriter.getInstance(document,) > } > } > > /** > * Get the bytes of next page > * @return the bytes of next page .If file reachs end , > return null. > * @throws IOException > * @throws IOException if PDF document error occurs > */ > public byte[] nextPage() throws IOException { > try{ > if( ++pageCounter <= pageNumber ){ > ByteArrayOutputStream byteOutStream = new ByteArrayOutputStream(); > writer = PdfWriter.getInstance(document, byteOutStream); > if (shouldEntrypted) { > writer.setEncryption(is128bit, usrPassword, ownerPassword, 0); > } > document.open(); > PdfContentByte content = writer.getDirectContent(); > PdfImportedPage page = writer.getImportedPage(reader, > pageCounter); > int rotation = reader.getPageRotation(pageCounter); > if (rotation == 90 || rotation == 270) { > content.addTemplate(page, 0, -1f, 1f, 0, 0, > reader.getPageSizeWithRotation(pageCounter).height()); > } > else { > content.addTemplate(page, 1f, 0, 0, 1f, 0, 0); > } > document.close(); > writer.close(); > reader.removeUnusedObjects(); > reader.eliminateSharedStreams(); > return byteOutStream.toByteArray (); > } > else{ > return null; > } > }catch(DocumentException e){ > throw new IOException(e.toString()); > } > } > /** > * Finish one task of splitting and can call setFile(String > fileName) to begin another task. > */ > public void close(){ > pageNumber = 0; > pageCounter = 0; > pdfFile = null; > reader = null; > shouldEntrypted = false; > > } > > public void skip(int pageNum){ > pageCounter += pageNum; > } > > public int getPageNumber(){ > return pageNumber; > } > > /** > * Tell Splitor to entrypt output pages. > * @param usrPassword PDF contents' user-password ,can be > null (This password will be required before the file's openning) > * @param ownerPassword PDF contents' owner-password, can be > null (This password will be required before the file's changing) > * @param is128bit true for 128 bit key length. false for 40 > bit key length > */ > public void setEncryption(String usrPassword, String > ownerPassword, boolean is128bit){ > this.ownerPassword = ownerPassword; > this.usrPassword = usrPassword; > this.is128bit = is128bit; > shouldEntrypted = true; > } > > /**For debug: pass a PDF-file name then it will spit the file*/ > public static void main(String[] args) { > try { > String fileName = args[0]; > PDFSplitor splitor = new PDFSplitor(); > splitor.setFile(fileName); > splitor.setEncryption(null, null, true); > byte[] buffer; > int num = 0; > int page = 0; > while ( ( buffer=splitor.nextPage()) != null){ > int dotIndex = fileName.indexOf('.'); > if(dotIndex>=0){ > fileName = fileName.substring(0,dotIndex); > } > FileOutputStream out = new > FileOutputStream(fileName+"_"+ ++num + ".pdf"); > out.write(buffer); > out.close(); > System.gc(); > System.gc(); > System.out.println("finished page:" + (page++)); > } > splitor.close(); > > } > catch(Exception e){ > e.printStackTrace(); > } > } > > private File pdfFile; > private PdfReader reader; > private int pageCounter = 0; > private int pageNumber = 0; > private Document document; > private PdfWriter writer; > private String usrPassword; > private String ownerPassword; > private boolean is128bit; > private boolean shouldEntrypted; > > } > > >
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