ppt转换成pdf文件

最近用到了，记一下； ppt转pdf分为两种情况: 小于2007版本的 .ppt格式（2003） 与大于2007版本的 .pptx格式（2007） .ppt格式为 二进制文件 .pptx格式为xml格式，在java中有不同的jar包需要使用

引入 jar <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>4.0.1</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>4.0.1</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId> <version>4.0.1</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-scratchpad</artifactId> <version>4.0.1</version> </dependency> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itextpdf</artifactId> <version>5.5.6</version> </dependency> 代码 package cc.vace.cloud.utils; import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.pdf.*; import org.apache.poi.hslf.usermodel.HSLFSlide; import org.apache.poi.hslf.usermodel.HSLFSlideShow; import org.apache.poi.hslf.usermodel.HSLFTextShape; import org.apache.poi.xslf.usermodel.*; import java.awt.*; import java.awt.image.BufferedImage; import java.io.*; import java.util.List; import java.util.Objects; /** * @author vace cc */ public class PptUtil { public static void main(String[] args) throws IOException, DocumentException { FileInputStream inputStream0 = new FileInputStream("F:\\file\\text.ppt"); FileInputStream inputStream1 = new FileInputStream("F:/file/text.pptx"); FileOutputStream outputStream0 = new FileOutputStream("F:\\file\\text0.pdf"); FileOutputStream outputStream1 = new FileOutputStream("F:/file/text1.pdf"); pptToPdf(inputStream0, outputStream0); pptxToPdf(inputStream1,outputStream1); } /** * ppt二进制文件转pdf * * @param pptIs ppt原文件流 * @param pdfOs pdf 输出文件流 * @return true * @throws IOException io * @throws DocumentException doc */ public static boolean pptToPdf(InputStream pptIs, OutputStream pdfOs) throws IOException, DocumentException { Document doc = new Document(); HSLFSlideShow hslfSlideShow = null; PdfWriter pdfWriter = null; try { hslfSlideShow = new HSLFSlideShow(pptIs); Dimension dimension = hslfSlideShow.getPageSize(); pdfWriter = PdfWriter.getInstance(doc, pdfOs); doc.open(); PdfPTable pdfpTable = new PdfPTable(1); List<HSLFSlide> slides = hslfSlideShow.getSlides(); // 设置ppt 为宋体，否则转pdf时会乱码 for (HSLFSlide slide : slides) { slide.getShapes().stream() .filter(shape -> shape instanceof HSLFTextShape) .map(shape -> (HSLFTextShape) shape) .forEach(shapeH -> shapeH.getTextParagraphs().forEach(paragraph -> paragraph.getTextRuns().forEach(textRun -> textRun.setFontFamily("宋体")))); BufferedImage bufferedImage = new BufferedImage((int)dimension.getWidth(), (int)dimension.getHeight(), BufferedImage.TYPE_INT_RGB); Graphics2D graphics = bufferedImage.createGraphics(); graphics.setPaint(Color.white); graphics.setFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 12)); slide.draw(graphics); graphics.dispose(); com.itextpdf.text.Image image = com.itextpdf.text.Image.getInstance(bufferedImage, null); image.scalePercent(50f); // 写入单元格 pdfpTable.addCell(new PdfPCell(image, true)); doc.add(image); } System.out.println("---------- 转换成功 -------------"); return true; } catch (Throwable e) { e.printStackTrace(); System.out.println("---------- 转换失败 -------------"); throw e; } finally { doc.close(); if (!Objects.isNull(hslfSlideShow)) { hslfSlideShow.close(); } if (null != pdfWriter) { pdfWriter.close(); } } } /** * pptx XML文件转pdf * @param pptIs ppt原文件流 * @param pdfOs pdf 输出文件流 * @return true * @throws IOException io */ public static boolean pptxToPdf(InputStream pptIs, OutputStream pdfOs) throws IOException { Document doc = new Document(); XMLSlideShow slideShow = null; PdfWriter pdfWriter = null; try { slideShow = new XMLSlideShow(pptIs); pdfWriter = PdfWriter.getInstance(doc,pdfOs); Dimension dimension = slideShow.getPageSize(); doc.open(); PdfPTable pdfpTable = new PdfPTable(1); List<XSLFSlide> slides = slideShow.getSlides(); for (XSLFSlide slide : slides) { // 设置字体 slide.getShapes().stream() .filter(shape -> shape instanceof XSLFTextShape) .map(shape -> (XSLFTextShape) shape) .forEach(shapeH -> shapeH.getTextParagraphs().forEach(paragraph -> paragraph.getTextRuns().forEach(textRun -> textRun.setFontFamily("宋体")))); BufferedImage bufferedImage = new BufferedImage((int) dimension.getWidth(), (int) dimension.getHeight(), BufferedImage.TYPE_INT_RGB); Graphics2D graphics = bufferedImage.createGraphics(); graphics.setPaint(Color.white); graphics.setFont(new Font("宋体", Font.PLAIN, 12)); slide.draw(graphics); com.itextpdf.text.Image image = com.itextpdf.text.Image.getInstance(bufferedImage, null); image.scalePercent(50f); pdfpTable.addCell(new PdfPCell(image, true)); doc.add(image); } if (slides.size() == 0) { BufferedImage bufferedImage = new BufferedImage((int) dimension.getWidth(), (int) dimension.getHeight(), BufferedImage.TYPE_INT_ARGB); com.itextpdf.text.Image image = com.itextpdf.text.Image.getInstance(bufferedImage, null); pdfpTable.addCell(new PdfPCell(image, true)); doc.add(image); } System.out.println("---------- 转换成功 -------------"); return true; }catch (Throwable e) { e.printStackTrace(); // throw e; return false; }finally { doc.close(); if (!Objects.isNull(slideShow)) { slideShow.close(); } if (pdfWriter != null) { pdfWriter.close(); } } } } 遇到的exception 遇见报错document 是空的 The document has no pages.

遇见这个问题，一般情况下是因为slide.draw报错了，但是catch捕获 不到，最后在执行完成之后报错，但此时的错是finally里异常关闭文件导致的，所以会报document has no pages 无法关闭 这里做几个问题点去切入

一、

首先要注意的是这里catch 的是Throwable 而不是Exception 因为当 slide.draw() 方法报错 是继承的Throwable 的异常，而不是Exception 的，所以使用Exception 去捕获异常的时候会失败

catch (Throwable e) { e.printStackTrace(); throw e; return false; } 二、

针对jdk8以上的版本：如jdk11 报错

javax/xml/bind/JAXBException

需要添加额外的jar包

<dependency> <groupId>javax.activation</groupId> <artifactId>activation</artifactId> <version>1.1.1</version> </dependency> <dependency> <groupId>javax.xml.bind</groupId> <artifactId>jaxb-api</artifactId> <version>2.3.0</version> </dependency> <dependency> <groupId>com.sun.xml.bind</groupId> <artifactId>jaxb-core</artifactId> <version>2.3.0.1</version> </dependency> <dependency> <groupId>com.sun.xml.bind</groupId> <artifactId>jaxb-impl</artifactId> <version>2.3.0.1</version> </dependency> 三

如果上传的一个空ppt 则pdf文件一定是已损坏，有两种解决办法，一，初始化一个空的pdf 这里选择TYPE_INT_ARGB，这样底色就是空白的啦，如果使用TYPE_INT_RGB那就是一块黑

if (slides.size() == 0) { BufferedImage bufferedImage = new BufferedImage((int) dimension.getWidth(), (int) dimension.getHeight(), BufferedImage.TYPE_INT_ARGB); com.itextpdf.text.Image image = com.itextpdf.text.Image.getInstance(bufferedImage, null); pdfpTable.addCell(new PdfPCell(image, true)); doc.add(image); }

poi的5.X版本

这里介绍的poi适合4.X的版本，如果使用 5.X版本则需要加入xmlbeans包

<dependency> <groupId>org.apache.xmlbeans</groupId> <artifactId>xmlbeans</artifactId> <version>5.0.3</version> </dependency>

完整的 5.X包：截止博主写文的时间，最新的poi版本如下

<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>5.2.2</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>5.2.2</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml-schemas</artifactId> <version>4.1.2</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-scratchpad</artifactId> <version>5.2.2</version> </dependency> <dependency> <groupId>com.itextpdf</groupId> <artifactId>itextpdf</artifactId> <version>5.5.13.3</version> </dependency> <dependency> <groupId>org.apache.xmlbeans</groupId> <artifactId>xmlbeans</artifactId> <version>5.0.3</version> </dependency> 设置页面大小

当我们把上边的步骤实现之后，发现两个ppt 合成了一个pdf页面，想要一个pdf页面对应一个ppt页面 实现方式：

Document 在new 的 时候可以直接将页面的尺寸放进去 Document 可以使用 setPageSize来设置大小 setPageSize 有一个问题，setPageSize不会立即生效，导致我们在设置页面的时候，从第二页开始才会生效。 具体是bug还是故意这样设计的不清楚

代码实现：只列出 pptx格式的 ppt 转也是一样的

public static boolean pptxToPdf(InputStream pptIs, OutputStream pdfOs) throws IOException { Document doc = null; XMLSlideShow slideShow = null; PdfWriter pdfWriter = null; try { slideShow = new XMLSlideShow(pptIs); Dimension dimension = slideShow.getPageSize(); BufferedImage bufferedImage0 = new BufferedImage((int) dimension.getWidth(), (int) dimension.getHeight(), BufferedImage.TYPE_INT_ARGB); com.itextpdf.text.Image image0 = com.itextpdf.text.Image.getInstance(bufferedImage0, null); com.itextpdf.text.Rectangle pageSize = new com.itextpdf.text.Rectangle(image0); //PageSize.A4.rotate() doc = new Document(pageSize); pdfWriter = PdfWriter.getInstance(doc,pdfOs); doc.open(); PdfPTable pdfpTable = new PdfPTable(1); List<XSLFSlide> slides = slideShow.getSlides(); // 如果是空ppt， 则生成默认一页 if (slides.size() == 0) { doc.add(image0); } for (XSLFSlide slide : slides) { // 设置字体 slide.getShapes().stream() .filter(shape -> shape instanceof XSLFTextShape) .map(shape -> (XSLFTextShape) shape) .forEach(shapeH -> shapeH.getTextParagraphs().forEach(paragraph -> paragraph.getTextRuns().forEach(textRun -> textRun.setFontFamily("宋体")))); BufferedImage bufferedImage = new BufferedImage((int) dimension.getWidth(), (int) dimension.getHeight(), BufferedImage.TYPE_INT_RGB); Graphics2D graphics = bufferedImage.createGraphics(); graphics.setPaint(Color.white); graphics.setFont(new Font("宋体", Font.PLAIN, 12)); slide.draw(graphics); com.itextpdf.text.Image image = com.itextpdf.text.Image.getInstance(bufferedImage, null); image.scalePercent(90f); pdfpTable.addCell(new PdfPCell(image, true)); doc.add(image); } System.out.println("---------- 转换成功 -------------"); return true; }catch (Throwable e) { e.printStackTrace(); // throw e; return false; }finally { doc.close(); if (!Objects.isNull(slideShow)) { slideShow.close(); } if (pdfWriter != null) { pdfWriter.close(); } } }