java.io.IOException: COSStream 已关闭且无法读取.也许它的封闭 PDDocument 已关闭? [英] java.io.IOException: COSStream has been closed and cannot be read. Perhaps its enclosing PDDocument has been closed?

问题描述

我尝试使用 apache PDFBox 保存 PDF 文件，但出现错误

I've tried to save PDF file with apache PDFBox but have error

java.io.IOException: COSStream 已关闭且无法读取.也许它的封闭 PDDocument 已关闭?

java.io.IOException: COSStream has been closed and cannot be read. Perhaps its enclosing PDDocument has been closed?

怎么了?

PDDocument document = PDDocument.load(new File(fileName));
try {
    ...
    document.save(storeFileName);
} finally {
    document.close();
}

推荐答案

即使正确关闭了 PDDoc，我也会看到上述错误.可能是什么问题.

I see the above error even if the PDDoc is closed properly. What might be the issue.

我的代码是:

public PDPage addPageWithSVG(PDDocument document, String svg) throws IOException {
    log.debug("addPageWithSVG");

    // Ensure Fop don't auto system scan font to avoid RHEL pitfall link with legit infinite path
    PDFTranscoder transcoder = new PDFTranscoder();
    transcoder.addTranscodingHint(PDFTranscoder.KEY_AUTO_FONTS, false);
    // end of correction

    TranscoderInput transcoderInput = new TranscoderInput(new StringReader(svg));
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    TranscoderOutput transcoderOutput = new TranscoderOutput(byteArrayOutputStream);
    PDDocument source = null;
    PDPage newPage = null;
    try {
        transcoder.transcode(transcoderInput, transcoderOutput);
        byte pdfData[] = byteArrayOutputStream.toByteArray();
        source = PDDocument.load(pdfData);
        PDPage sourcePage = source.getPage(0);
        newPage = document.importPage(sourcePage);

    } catch (TranscoderException | IOException e) {
        e.printStackTrace();
    } finally {
            if(source !=  null){
                source.close();
            }
    }
    return newPage;
}

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