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.poigroupId>
<artifactId>poiartifactId>
<version>4.0.1version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poi-ooxmlartifactId>
<version>4.0.1version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poi-ooxml-schemasartifactId>
<version>4.0.1version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poi-scratchpadartifactId>
<version>4.0.1version>
dependency>
<dependency>
<groupId>com.itextpdfgroupId>
<artifactId>itextpdfartifactId>
<version>5.5.6version>
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
javax.activation
activation
1.1.1
javax.xml.bind
jaxb-api
2.3.0
com.sun.xml.bind
jaxb-core
2.3.0.1
com.sun.xml.bind
jaxb-impl
2.3.0.1
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();
}
}
}