springboot ppt转换为pdf——poi方式

快来打我* 2023-10-10 17:57 6阅读 0赞

### springboot ppt转换为pdf——POI方式 ###

## 1.添加maven依赖 ##

<properties>          
        		<poi.version>4.1.2</poi.version>
    		</properties>
    		
    	    <dependencies>
     		 <dependency>
                <groupId>org.apache.poi</groupId>
                <artifactId>poi</artifactId>
                <version>${
        poi.version}</version>
            </dependency>
    
            <dependency>
                <groupId>org.apache.xmlgraphics</groupId>
                <artifactId>batik-bridge</artifactId>
                <version>1.11</version>
            </dependency>
            <dependency>
                <groupId>org.apache.poi</groupId>
                <artifactId>poi-ooxml</artifactId>
                <version>${
        poi.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-compress</artifactId>
                <version>1.19</version>
            </dependency>
    
            
            <dependency>
                <groupId>org.apache.poi</groupId>
                <artifactId>poi-ooxml-schemas</artifactId>
                <version>${
        poi.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.poi</groupId>
                <artifactId>poi-scratchpad</artifactId>
                <version>${
        poi.version}</version>
            </dependency>
            
            <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itextpdf</artifactId>
                <version>5.4.3</version>
            </dependency>
    
            <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itext-asian</artifactId>
                <version>5.2.0</version>
            </dependency>
        </dependencies>

## 2.创建文件PPT2PdfPOIUtil.java ##

import java.awt.*;
    import java.awt.image.BufferedImage;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.util.Date;
    import java.util.List;
    
    import org.apache.commons.lang3.StringUtils;
    import org.apache.poi.xslf.usermodel.*;
    import org.apache.poi.hslf.usermodel.*;
    import com.itextpdf.text.Document;
    import com.itextpdf.text.pdf.*;
    import com.itextpdf.text.Image;
    
    public class PPT2PdfPOIUtil {
        
    
    
        public static boolean pptxToPdf(String pptPath, String pdfPath) {
        
    
            if (StringUtils.isEmpty(pptPath)) {
        
                throw new RuntimeException("ppt文档路径不能为空");
            }
    
            if (StringUtils.isEmpty(pdfPath)) {
        
                throw new RuntimeException("pdf路径不能为空");
            }
    
            long start = new Date().getTime();
    
            Document document = null;
    
            XMLSlideShow slideShow = null;
    
    
            FileOutputStream fileOutputStream = null;
    
            PdfWriter pdfWriter = null;
    
    
            try {
        
                //使用输入流pptx文件
                slideShow = new XMLSlideShow(new FileInputStream(pptPath));
                //获取幻灯片的尺寸
                Dimension dimension = slideShow.getPageSize();
                //新增pdf输出流，准备讲ppt写出
                fileOutputStream = new FileOutputStream(pdfPath);
                //创建一个写内容的容器
                document = new Document();
                //使用输出流写入
                pdfWriter = PdfWriter.getInstance(document, fileOutputStream);
                //使用之前必须打开
                document.open();
    
                PdfPTable pdfPTable = new PdfPTable(1);
                //获取幻灯片
                List<XSLFSlide> slideList = slideShow.getSlides();
    
                for (int i = 0, row = slideList.size(); i < row; i++) {
        
                    //获取每一页幻灯片
                    XSLFSlide slide = slideList.get(i);
    
                    for (XSLFShape shape : slide.getShapes()) {
        
                        //判断是否是文本
                        if(shape instanceof XSLFTextShape){
        
                            // 设置字体, 解决中文乱码
                            XSLFTextShape textShape = (XSLFTextShape) shape;
                            for (XSLFTextParagraph textParagraph : textShape.getTextParagraphs()) {
        
                                for (XSLFTextRun textRun : textParagraph.getTextRuns()) {
        
                                    textRun.setFontFamily("宋体");
                                }
                            }
                        }
                    }
    
    
                    //根据幻灯片尺寸创建图形对象
                    BufferedImage bufferedImage = new BufferedImage((int)dimension.getWidth(), (int)dimension.getHeight(), BufferedImage.TYPE_INT_RGB);
    
                    Graphics2D graphics2d = bufferedImage.createGraphics();
    
                    graphics2d.setPaint(Color.white);
                    graphics2d.setFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 12));
    
                    //把内容写入图形对象
                    slide.draw(graphics2d);
    
                    graphics2d.dispose();
    
                    //封装到Image对象中
                    Image image = Image.getInstance(bufferedImage, null);
                    image.scalePercent(50f);
    
                    // 写入单元格
                    pdfPTable.addCell(new PdfPCell(image, true));
                    document.add(image);
                }
            } catch (Exception e) {
        
                e.printStackTrace();
                return false;
            } finally {
        
                try {
        
                    if (document != null) {
        
                        document.close();
                    }
                    if (fileOutputStream != null) {
        
                        fileOutputStream.close();
                    }
                    if (pdfWriter != null) {
        
                        pdfWriter.close();
                    }
                } catch (IOException e) {
        
                    e.printStackTrace();
                }
            }
            long end = new Date().getTime();
            System.out.println("pdf转换成功，共耗时：" + ((end - start) / 1000.0) + "秒"); // 转化用时
    
            return true;
        }
    
    
        public static boolean pptToPdf(String pptPath, String pdfPath) {
        
    
            if (StringUtils.isEmpty(pptPath)) {
        
                throw new RuntimeException("ppt文档路径不能为空");
            }
    
            if (StringUtils.isEmpty(pdfPath)) {
        
                throw new RuntimeException("pdf路径不能为空");
            }
    
    
    
    
            Document document = null;
            HSLFSlideShow hslfSlideShow = null;
            FileOutputStream fileOutputStream = null;
            PdfWriter pdfWriter = null;
    
            try {
        
                //使用输入流ppt文件
                hslfSlideShow = new HSLFSlideShow(new FileInputStream(pptPath));
    
                // 获取ppt文件页面
                Dimension dimension = hslfSlideShow.getPageSize();
    
                fileOutputStream = new FileOutputStream(pdfPath);
    
                document = new Document();
    
                // pdfWriter实例
                pdfWriter = PdfWriter.getInstance(document, fileOutputStream);
    
                document.open();
    
                PdfPTable pdfPTable = new PdfPTable(1);
    
                List<HSLFSlide> hslfSlideList = hslfSlideShow.getSlides();
    
                for (int i=0; i < hslfSlideList.size(); i++) {
        
                    HSLFSlide hslfSlide = hslfSlideList.get(i);
    
                    for (HSLFShape shape : hslfSlide.getShapes()) {
        
    
                        if (shape instanceof HSLFTextShape){
        
                            // 设置字体, 解决中文乱码
                            HSLFTextShape textShape = (HSLFTextShape) shape;
    
                            for (HSLFTextParagraph textParagraph : textShape.getTextParagraphs()) {
        
                                for (HSLFTextRun textRun : textParagraph.getTextRuns()) {
        
                                    textRun.setFontFamily("宋体");
                                }
                            }
                        }
    
                    }
                    BufferedImage bufferedImage = new BufferedImage((int)dimension.getWidth(), (int)dimension.getHeight(), BufferedImage.TYPE_INT_RGB);
    
                    Graphics2D graphics2d = bufferedImage.createGraphics();
    
                    graphics2d.setPaint(Color.white);
                    graphics2d.setFont(new java.awt.Font("宋体", java.awt.Font.PLAIN, 12));
    
                    hslfSlide.draw(graphics2d);
    
                    graphics2d.dispose();
    
                    Image image = Image.getInstance(bufferedImage, null);
                    image.scalePercent(50f);
    
                    // 写入单元格
                    pdfPTable.addCell(new PdfPCell(image, true));
                    document.add(image);
                }
    
            } catch (Exception e) {
        
                e.printStackTrace();
                return false;
            } finally {
        
                try {
        
                    if (document != null) {
        
                        document.close();
                    }
                    if (fileOutputStream != null) {
        
                        fileOutputStream.close();
                    }
                    if (pdfWriter != null) {
        
                        pdfWriter.close();
                    }
                } catch (IOException e) {
        
                    e.printStackTrace();
                }
            }
            return true;
        }
    
    
        public static void main(String[] args) {
        
            boolean successful = false;
            // ppt to pdf
            successful = pptxToPdf("E:\\code\\test\\1.pptx","E:\\code\\test\\1.pdf");
            System.out.println("转换" + (successful ? "成功" : "失败"));
        }
    
    }

## 3.执行main方法进行测试 ##

public static void main(String[] args) {
        
            boolean successful = false;
            // ppt to pdf
            successful = pptxToPdf("E:\\code\\test\\1.pptx","E:\\code\\test\\1.pdf");
            System.out.println("转换" + (successful ? "成功" : "失败"));
        }