Java Splitter類使用實例

實例1: splitToExamPapersWithPDFStreams

import org.apache.pdfbox.util.Splitter; //導入依賴的package包/類/** * Splits a PDF-document into exam papers. * * @param pdfStream PDF-file as InputStream * @return A List of ExamPapers. * @throws IOException If InputStream can not be read or stream doesn't * contain a PDF-format file. * @throws DocumentException If document contains odd number of pages. * @throws PdfException If a document is not in the right format or error * occurs while loading or splitting or document has an odd number of pages. * @throws COSVisitorException if something goes wrong when visiting a PDF * object. */public List<ExamPaper> splitToExamPapersWithPDFStreams(InputStream pdfStream) throws IOException, DocumentException, PdfException, COSVisitorException {    PDDocument allPdfDocument = PDDocument.load(pdfStream);    if (allPdfDocument.getNumberOfPages() % 2 != 0) {        throw new DocumentException("Odd number of pages");    }    Splitter splitter = new Splitter();    splitter.setSplitAtPage(2);    List<PDDocument> pdfDocuments = splitter.split(allPdfDocument);    ArrayList<ExamPaper> examPapers = new ArrayList<>();    for (PDDocument pdfDocument : pdfDocuments) {        ExamPaper paper = new ExamPaper();        ByteArrayOutputStream out = new ByteArrayOutputStream();        pdfDocument.save(out);        byte[] data = out.toByteArray();        paper.setPdf(data);        examPapers.add(paper);        pdfDocument.close();    }    allPdfDocument.close();    return examPapers;} 

實例2: main

import org.apache.pdfbox.util.Splitter; //導入依賴的package包/類public static void main(String[] args) throws IOException {    // Load the PDF. The PDDocument throws IOException    PDDocument document = new PDDocument();    document = PDDocument.load("C:\\Main.pdf");        // Create a Splitter object    Splitter splitter = new Splitter();        // We need this as split method returns a list    List<PDDocument> listOfSplitPages;        // We are receiving the split pages as a list of PDFs    listOfSplitPages = splitter.split(document);        // We need an iterator to iterate through them    Iterator<PDDocument> iterator = listOfSplitPages.listIterator();        // I am using variable i to denote page numbers.     int i = 1;    while(iterator.hasNext()){        PDDocument pd = iterator.next();        try{            // Saving each page with its assumed page no.            pd.save("C:\\Page " + i++ + ".pdf");        } catch (COSVisitorException anException){            // Something went wrong with a PDF object            System.out.println("Something went wrong with page " + (i-1) + "\n Here is the error message" + anException);                        }                }        } 

實例3: splitDocument

import org.apache.pdfbox.util.Splitter; //導入依賴的package包/類private PDDocumentContainer splitDocument(PDDocument sDocument, Integer sStartPage, Integer sEndPage, Integer sSplitAtPage) throws IOException {    Splitter aSplitter = new Splitter();    int aNumberOfPages = sDocument.getNumberOfPages();    boolean aStartEndPageSet = false;    if (sStartPage != null) {        aSplitter.setStartPage(sStartPage);        aStartEndPageSet = true;        if (sSplitAtPage == null) {            aSplitter.setSplitAtPage(aNumberOfPages);        }    }    if (sEndPage != null) {        aSplitter.setEndPage(sEndPage);        aStartEndPageSet = true;        if (sSplitAtPage == null) {            aSplitter.setSplitAtPage(sEndPage);        }    }    if (sSplitAtPage != null) {        aSplitter.setSplitAtPage(sSplitAtPage);    } else if (!aStartEndPageSet) {        aSplitter.setSplitAtPage(1);    }    List<PDDocument> aParts = aSplitter.split(sDocument);    return new BasicPDDocumentContainer(sDocument, aParts);} 

實例4: split

import org.apache.pdfbox.util.Splitter; //導入依賴的package包/類@Overridepublic List<String> split(final String inputUri, final String outputUri, final Integer pages)throws IOException, COSVisitorException {final List<String> result = new ArrayList<String>();if (StringUtils.isNotBlank(inputUri) && StringUtils.isNotBlank(outputUri) && pages != null) {final PDDocument doc = PDDocument.load(inputUri);final Splitter splitter = new Splitter();splitter.setSplitAtPage(pages);final List<PDDocument> splittedDocs = splitter.split(doc);Integer subIndex = 1;for (final PDDocument document : splittedDocs) {final String extension = this.converterUtils.addSubIndexBeforeExtension(outputUri,subIndex++);document.save(extension);result.add(extension);document.close();}doc.close();} else {throw new IllegalArgumentException(Constants.ILLEGAL_ARGUMENT_EXCEPTION_MESSAGE);}return result;}