javax.imageio.IIOException：在 PDFBox 中打印使用 CCITTFaxDecode 压缩的 PDF 时出现错误 2

发布于 2024-08-18 10:55:28 字数 775 浏览 10 评论 0原文

我正在使用 PDFBox 尝试打印 pdf（我们使用的是 java 的 PDF 渲染器，但遇到了 CCITTFaxDecode 压缩 pdf 的问题，因此我们进行了切换）。但是，pdf 全部打印为空白页。当我单步执行 PDFBox 代码时，我在 PDCcitt.java 中遇到了这段代码：

    public BufferedImage getRGBImage() throws IOException
{
    BufferedImage retval = null;

    InputStream tiff = new TiffWrapper(
            getPDStream().getPartiallyFilteredStream( FAX_FILTERS ),
            getCOSStream());
    try 
    {
        retval = ImageIO.read(tiff);
    }
    catch (Exception e)
    {
        log.error(e, e);
    } 
    finally 
    {
        if (tiff != null)
        {
            tiff.close();
        }
    }
    return retval;
}

在调用 ImageIO.read() 期间抛出了这个神秘的错误： javax.imageio.IIOException：错误 2 我不知道这意味着什么，并且花了很长时间试图在网上找到它。任何人都可以帮助阐明这个错误指的是什么吗？

原文

I'm using PDFBox to try and print pdfs (we were using java's PDF Renderer, but ran into problems with CCITTFaxDecode compressed pdfs, so we switched). However, the pdfs are all printing as blank pages. When I step through the PDFBox code, I come across this code in PDCcitt.java:

    public BufferedImage getRGBImage() throws IOException
{
    BufferedImage retval = null;

    InputStream tiff = new TiffWrapper(
            getPDStream().getPartiallyFilteredStream( FAX_FILTERS ),
            getCOSStream());
    try 
    {
        retval = ImageIO.read(tiff);
    }
    catch (Exception e)
    {
        log.error(e, e);
    } 
    finally 
    {
        if (tiff != null)
        {
            tiff.close();
        }
    }
    return retval;
}

it is during the call to ImageIO.read() where this cryptic error is thrown:
javax.imageio.IIOException: Error 2
I have no idea what this means, and have had a heck of a time trying to find it online. Can anyone help shed some light as to what this error refers to?

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