Java使用apache的poi将PPT转PDF文件，支持并兼容PPT和PPTX文件

Java使用apache的poi将PPT转PDF文件，支持并兼容PPT和PPTX文件

前言：使用apache的poi，免费

废话不多说，贴代码：

package com.junit;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

import org.apache.poi.hslf.usermodel.HSLFSlide;
import org.apache.poi.hslf.usermodel.HSLFSlideShow;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFSlide;

import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;

public class PPTtoPDF {
	private static final String path = "D:\\_my_del\\ppt\\";

	public static void main(String[] args) throws Exception {
		File file2 = new File(path + "ResultG/");
		if (!file2.exists())
			file2.mkdirs();

		File file = new File(path);
		for (File f : file.listFiles()) {
			if (!f.isFile())
				continue;
			file2 = new File(path + "ResultG/" + file.getName() + ".pdf");
			if (!file2.exists())
				file2.createNewFile();
			new PPTtoPDF().convertPPTToPDF(f, file2);
		}
	}

	public boolean convertPPTToPDF(File file, File toFile) {
		try {
			Document pdfDocument = new Document();
			PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument, new FileOutputStream(toFile));
			FileInputStream is = new FileInputStream(file);
			HSLFSlideShow hslfSlideShow = convertPPTToPDFByPPT(is);
			double zoom = 2;
			if (hslfSlideShow == null) {
				is = new FileInputStream(file);
				XMLSlideShow ppt = convertPPTToPDFByPPTX(is);
				if (ppt == null) {
					throw new NullPointerException("This PPTX get data is error....");
				}
				Dimension pgsize = ppt.getPageSize();
				List<XSLFSlide> slide = ppt.getSlides();
				AffineTransform at = new AffineTransform();
				at.setToScale(zoom, zoom);
				pdfDocument.setPageSize(new Rectangle((float) pgsize.getWidth(), (float) pgsize.getHeight()));
				pdfWriter.open();
				pdfDocument.open();
				PdfPTable table = new PdfPTable(1);
				for (XSLFSlide xslfSlide : slide) {
					BufferedImage img = new BufferedImage((int) Math.ceil(pgsize.width * zoom), (int) Math.ceil(pgsize.height * zoom), BufferedImage.TYPE_INT_RGB);
					Graphics2D graphics = img.createGraphics();
					graphics.setTransform(at);

					graphics.setPaint(Color.white);
					graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));
					xslfSlide.draw(graphics);
					graphics.getPaint();
					Image slideImage = Image.getInstance(img, null);
					table.addCell(new PdfPCell(slideImage, true));
				}
				ppt.close();
				pdfDocument.add(table);
				pdfDocument.close();
				pdfWriter.close();
				System.out.println(file.getAbsolutePath() + "Powerpoint file converted to PDF successfully");
				return true;
			}

			Dimension pgsize = hslfSlideShow.getPageSize();
			List<HSLFSlide> slides = hslfSlideShow.getSlides();
			pdfDocument.setPageSize(new Rectangle((float) pgsize.getWidth(), (float) pgsize.getHeight()));
			pdfWriter.open();
			pdfDocument.open();
			AffineTransform at = new AffineTransform();
			PdfPTable table = new PdfPTable(1);
			for (HSLFSlide hslfSlide : slides) {
				BufferedImage img = new BufferedImage((int) Math.ceil(pgsize.width * zoom), (int) Math.ceil(pgsize.height * zoom), BufferedImage.TYPE_INT_RGB);
				Graphics2D graphics = img.createGraphics();
				graphics.setTransform(at);

				graphics.setPaint(Color.white);
				graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height));
				hslfSlide.draw(graphics);
				graphics.getPaint();
				Image slideImage = Image.getInstance(img, null);
				table.addCell(new PdfPCell(slideImage, true));
			}
			hslfSlideShow.close();
			pdfDocument.add(table);
			pdfDocument.close();
			pdfWriter.close();
			System.out.println(file.getAbsolutePath() + "Powerpoint file converted to PDF successfully");
			return true;
		} catch (Exception e) {
			System.out.println(file.getAbsolutePath() + "--->" + e.getMessage());
			return false;
		}
	}

	private XMLSlideShow convertPPTToPDFByPPTX(FileInputStream is) {
		try {
			return new XMLSlideShow(is);
		} catch (IOException e) {
			return null;
		}
	}

	private HSLFSlideShow convertPPTToPDFByPPT(FileInputStream is) {
		try {
			return new HSLFSlideShow(is);
		} catch (Exception e) {
			return null;
		}
	}
}

HSLFSlideShow 用于ppt文件，XMLSlideShow 用于pptx文件。

该代码需要jar包支持，为方便下载，已上传至本资源库，链接：
https://download.csdn.net/download/qq_26599807/12670074

• 扩展：
  POI官方网站及下载：http://poi.apache.org/download.html
  POI下载地址2：https://downloads.apache.org/poi/