ReadPageLabels.java 文件源码

/**
 * <a href="http://stackoverflow.com/questions/32393858/why-result-of-getpagelabels-is-different-from-the-adobe-acrobat">
 * Why result of GetPageLabels is different from the Adobe Acrobat
 * </a>
 * <br/>
 * <a href="https://drive.google.com/file/d/0Bxb0Du7de8igNmVPSUc3VzdPSjg/view?usp=sharing">
 * testHuangMeizai.pdf
 * </a>
 * <p>
 * Indeed, the labels are wrong. There is a small bug in {@link PdfPageLabels#getPageLabelFormats(PdfReader)}.
 * When encountering a new page label dictionary without a P (prefix) entry, it does not reset the current
 * prefix value.
 * </p>
 */
@Test
public void testTestHuangMeizai() throws IOException
{
    try (   InputStream resource = getClass().getResourceAsStream("testHuangMeizai.pdf"))
    {
        final PdfReader reader = new PdfReader(resource);

        String[] objLabels = PdfPageLabels.getPageLabels(reader);
        System.out.println("page number:");
        if (objLabels != null)
        {
            for (int i = 0; i <= objLabels.length - 1; i++)
            {
                System.out.printf("%2d - %s\n", i, objLabels[i]);
            }
        }
    }
}