如何获取PDF文件中的页数？

import PyPDF2

def get_pdf_page_count(file_path):
    with open(file_path, 'rb') as file:
        pdf = PyPDF2.PdfFileReader(file)
        return pdf.getNumPages()

file_path = 'path/to/your/pdf/file.pdf'
page_count = get_pdf_page_count(file_path)
print("PDF文件页数：", page_count)

import org.apache.pdfbox.pdmodel.PDDocument;

public class PDFPageCounter {
    public static int getPageCount(String filePath) throws IOException {
        try (PDDocument document = PDDocument.load(new File(filePath))) {
            return document.getNumberOfPages();
        }
    }

    public static void main(String[] args) {
        String filePath = "path/to/your/pdf/file.pdf";
        try {
            int pageCount = getPageCount(filePath);
            System.out.println("PDF文件页数：" + pageCount);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}