帮我写一个java获取word、ppt、pdf、excel等文档页数的工具类

好的，以下是一个Java获取各种文档页数的工具类，使用了Apache POI和Apache PDFBox库：

import java.io.File;
import java.io.FileInputStream;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.hslf.usermodel.HSLFSlideShow;
import org.apache.poi.sl.usermodel.SlideShow;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.usermodel.Range;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.pdfbox.pdmodel.PDDocument;

public class DocumentPageCount {
    public static int getExcelPageCount(String filePath) {
        try {
            File file = new File(filePath);
            FileInputStream fis = new FileInputStream(file);
            Workbook workbook = null;
            if (filePath.endsWith(".xls")) {
                workbook = new HSSFWorkbook(fis);
            } else if (filePath.endsWith(".xlsx")) {
                workbook = new XSSFWorkbook(fis);
            }
            fis.close();
            return workbook.getNumberOfSheets();
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    public static int getPptPageCount(String filePath) {
        try {
            File file = new File(filePath);
            FileInputStream fis = new FileInputStream(file);
            SlideShow slideshow = null;
            if (filePath.endsWith(".ppt")) {
                slideshow = new HSLFSlideShow(fis);
            } else if (filePath.endsWith(".pptx")) {
                slideshow = new XMLSlideShow(fis);
            }
            fis.close();
            return slideshow.getSlides().size();
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    public static int getWordPageCount(String filePath) {
        try {
            File file = new File(filePath);
            FileInputStream fis = new FileInputStream(file);
            HWPFDocument doc = null;
            Range range = null;
            XWPFDocument docx = null;
            if (filePath.endsWith(".doc")) {
                doc = new HWPFDocument(fis);
                range = doc.getRange();
            } else if (filePath.endsWith(".docx")) {
                docx = new XWPFDocument(fis);
                range = docx.getDocument().getBody().getDocumentContent().getEndOfContent().getRange();
            }
            fis.close();
            return range.numParagraphs();
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    public static int getPdfPageCount(String filePath) {
        try {
            File file = new File(filePath);
            PDDocument document = PDDocument.load(file);
            int pageCount = document.getNumberOfPages();
            document.close();
            return pageCount;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
}

这个工具类包含了四个方法，分别用于获取Excel、PPT、Word和PDF文档的页数。您可以在自己的项目中使用这些方法来获取文档的页数。例如，要获取一个Excel文件的页数，可以调用`DocumentPageCount.getExcelPageCount("path/to/excel/file.xls")`。