word、excel、ppt、pptx转为PDF

相关引用对象在代码里了

相关依赖

<dependency>
    <groupId>org.apache.poigroupId>
        <artifactId>poi-ooxmlartifactId>
        <version>4.0.1version>
    dependency>
<dependency>
    <groupId>org.apache.poigroupId>
    <artifactId>poiartifactId>
    <version>4.0.1version>
dependency>

<dependency>
    <groupId>com.documents4jgroupId>
    <artifactId>documents4j-localartifactId>
    <version>1.0.3version>
dependency>
<dependency>
    <groupId>com.documents4jgroupId>
    <artifactId>documents4j-transformer-msoffice-wordartifactId>
    <version>1.0.3version>
dependency>

<dependency>
    <groupId>com.itextpdfgroupId>
    <artifactId>itextpdfartifactId>
    <version>5.2.0version>
    dependency>
<dependency>
    <groupId>org.apache.poigroupId>
    <artifactId>poi-scratchpadartifactId>
    <version>4.1.2version>
dependency>

<dependency>
    <groupId>com.itextpdfgroupId>
    <artifactId>itext-asianartifactId>
    <version>5.2.0version>
dependency>
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word转pdf

	import com.documents4j.api.DocumentType;
	import com.documents4j.api.IConverter;
	import com.documents4j.job.LocalConverter;
	import java.io.*;




	/**
     * 实现word转pdf
     *
     * @param sourcePath 源文件地址 如 D:\\1.doc
     * @param targetPath 目标文件地址 如 D:\\1.pdf
     */
    public static void wordToPdf(String sourcePath, String targetPath) {
        File inputWord = new File(sourcePath);
        File outputFile = new File(targetPath);
        try {
            InputStream docxInputStream = new FileInputStream(inputWord);
            OutputStream outputStream = new FileOutputStream(outputFile);
            IConverter converter = LocalConverter.builder().build();
            converter.convert(docxInputStream)
                    .as(DocumentType.DOCX)
                    .to(outputStream)
                    .as(DocumentType.PDF).schedule().get();
            outputStream.close();
            docxInputStream.close();

            log.info("转换完毕 targetPath = {}", outputFile.getAbsolutePath()+",targetPath = " + outputFile.getAbsolutePath());
            converter.shutDown();
        } catch (Exception e) {
            log.error("word转pdf失败:"+e.getMessage(), e);
        }
    }
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pptx转pdf

ppt转pdf该方法不适用，可以参考下一个方法

	import com.itextpdf.text.*;
	import com.itextpdf.text.pdf.PdfPCell;
	import com.itextpdf.text.pdf.PdfPTable;
	import com.itextpdf.text.pdf.PdfWriter;
	import org.apache.poi.xslf.usermodel.*;
	import java.awt.*;
	import java.awt.Color;
	import java.awt.image.BufferedImage;
	import java.io.*;



	/**
     * pptx转为pdf
     * @param sourcePath 源文件地址 如 D:\\1.pptx
     * @param targetPath 目标文件地址 如 D:\\1.pdf
     */
    public static void pptToPdf(String sourcePath,String targetPath) {
        Document document = null;
        XMLSlideShow slideShow = null;
        FileOutputStream fileOutputStream = null;
        PdfWriter pdfWriter = null;
        ByteArrayOutputStream baos = null;
        byte[] resBytes = null;
        try {
            baos=new ByteArrayOutputStream();
            //使用输入流pptx文件
            slideShow = new XMLSlideShow(new FileInputStream(new File(sourcePath)));
            //获取幻灯片的尺寸
            Dimension dimension = slideShow.getPageSize();
            //创建一个写内容的容器
            document = new Document(PageSize.A4, 72, 72, 72, 72);
            //使用输出流写入
            pdfWriter = PdfWriter.getInstance(document, baos);
            //使用之前必须打开
            document.open();
            pdfWriter.open();
            PdfPTable pdfPTable = new PdfPTable(1);
            //获取幻灯片
            java.util.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
                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));
                document.add(image);
            }
            document.close();
            pdfWriter.close();
            resBytes = baos.toByteArray();
            FileOutputStream outputStream = new FileOutputStream(targetPath);
            outputStream.write(resBytes);
            outputStream.flush();
            outputStream.close();
        } catch (Exception e) {
            log.error("pptx转pdf异常："+e.getMessage(),e);
        } finally {
            try {
                if (baos != null) {
                    baos.close();
                }
            } catch (Exception e) {
                log.error("pptx转pdf关闭io流异常："+e.getMessage(),e);
            }
        }
    }
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ppt转pdf

pptx转pdf该方法不适用，可以参考上一个方法

	import com.itextpdf.text.Document;
	import com.itextpdf.text.pdf.PdfPCell;
	import com.itextpdf.text.pdf.PdfPTable;
	import com.itextpdf.text.pdf.PdfWriter;
	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 java.awt.*;
	import java.awt.geom.AffineTransform;
	import java.awt.image.BufferedImage;
	import java.io.*;
	import java.util.List;



	/**
     * pptx转为pdf
     * @param sourcePath 源文件地址 如 D:\\1.ppt
     * @param targetPath 目标文件地址 如 D:\\1.pdf
     */
    public static void ppt2pdf(String sourcePath,String targetPath) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] resBytes = null;
        InputStream inputStream = null;
        try {
            Document pdfDocument = new Document();
            PdfWriter pdfWriter = PdfWriter.getInstance(pdfDocument, baos);
            inputStream = new FileInputStream(new File(sourcePath));
            HSLFSlideShow hslfSlideShow = new HSLFSlideShow(inputStream);
            double zoom = 1; // 该位置我是参考原博主的代码根据自己需要进行修改的，我理解的是这个数越大，ppt转化出的图片越小
            if (hslfSlideShow == null) {
                XMLSlideShow ppt = new XMLSlideShow(inputStream);
                if (ppt == null) {
                    throw new NullPointerException("获取ppt文件数据失败");
                }
                Dimension pgsize = ppt.getPageSize();
                java.util.List<XSLFSlide> slide = ppt.getSlides();
                AffineTransform at = new AffineTransform();
                at.setToScale(zoom, zoom);
                pdfDocument.setPageSize(new com.itextpdf.text.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 java.awt.geom.Rectangle2D.Float(0, 0, (float) (pgsize.width * zoom), (float) (pgsize.height * zoom)));// 这个地方如果不乘zoom，则意味着没有铺满
                    xslfSlide.draw(graphics);
                    graphics.getPaint();
                    com.itextpdf.text.Image slideImage = com.itextpdf.text.Image.getInstance(img, null);
                    table.addCell(new PdfPCell(slideImage, true));
                }
                ppt.close();
                pdfDocument.add(table);
                pdfDocument.close();
                pdfWriter.close();
                resBytes = baos.toByteArray();
                FileOutputStream outputStream = new FileOutputStream(targetPath);
                outputStream.write(resBytes);
                outputStream.flush();
                outputStream.close();
                return;
            }
            Dimension pgsize = hslfSlideShow.getPageSize();
            List<HSLFSlide> slides = hslfSlideShow.getSlides();
            pdfDocument.setPageSize(new com.itextpdf.text.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 java.awt.geom.Rectangle2D.Float(0, 0, (float) (pgsize.width * zoom), (float) (pgsize.height * zoom)));
                hslfSlide.draw(graphics);
                graphics.getPaint();
                com.itextpdf.text.Image slideImage = com.itextpdf.text.Image.getInstance(img, null);
                table.addCell(new PdfPCell(slideImage, true));
            }
            hslfSlideShow.close();
            pdfDocument.add(table);
            pdfDocument.close();
            pdfWriter.close();
            resBytes = baos.toByteArray();
            FileOutputStream outputStream = new FileOutputStream(targetPath);
            outputStream.write(resBytes);
            outputStream.flush();
            outputStream.close();
        } catch (Exception e) {
            log.error("ppt转为pdf异常："+e.getMessage(),e);
        }
    }
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excel转pdf

	import com.itextpdf.text.*;
	import com.itextpdf.text.Font;
	import com.itextpdf.text.pdf.BaseFont;
	import com.itextpdf.text.pdf.PdfPCell;
	import com.itextpdf.text.pdf.PdfPTable;
	import com.itextpdf.text.pdf.PdfWriter;
	import lombok.SneakyThrows;
	import org.apache.poi.ss.usermodel.*;    

	/**
     *
     * @param sourcePath 源文件地址 如 D:\\1.xlsx
     * @param targetPath 目标文件地址 如 D:\\1.pdf
     */
    @SneakyThrows
    private void excelToPdf(String sourcePath, String targetPath ){
        try (Workbook workbook = WorkbookFactory.create(new File(sourcePath));
             FileOutputStream fos = new FileOutputStream(targetPath )) {
            // 获取第一个工作表
            Sheet sheet = workbook.getSheetAt(0);

            // 创建PDF文档对象
            Document document = new Document(PageSize.A4, 50, 50, 50, 50);

            // 创建PDF输出流
            PdfWriter writer = PdfWriter.getInstance(document, fos);

            // 打开PDF文档
            document.open();

            // 创建PDF表格对象
            PdfPTable table = new PdfPTable(sheet.getRow(0).getLastCellNum());

            // 设置表格宽度
            table.setWidthPercentage(100);

            // 设置表格标题，Example Table为表格标题
            Paragraph title = new Paragraph("Example Table", new Font(BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED), 16, Font.BOLD));
            title.setAlignment(Element.ALIGN_CENTER);
            document.add(title);

            // 添加表格内容
            for (Row row : sheet) {
                for (Cell cell : row) {
                    PdfPCell pdfCell = new PdfPCell(new Paragraph(cell.getStringCellValue(), new Font(BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED), 12)));
                    pdfCell.setBorderWidth(1f);
                    pdfCell.setHorizontalAlignment(Element.ALIGN_CENTER);
                    pdfCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
                    table.addCell(pdfCell);
                }
            }

            // 添加表格到PDF文档
            document.add(table);

            // 关闭PDF文档
            document.close();
        } catch (IOException | DocumentException e) {
            e.printStackTrace();
        }
    }
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相关文件参考：
word转pdf ： https://gitee.com/wu_ze_wen/word_trans_pdf?_from=gitee_search
ppt转pdf : https://blog.csdn.net/qq_30436011/article/details/127737553?spm=1001.2101.3001.6650.2&utm_medium=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-2-127737553-blog-127973320.235%5Ev38%5Epc_relevant_anti_t3&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2%7Edefault%7ECTRLIST%7ERate-2-127737553-blog-127973320.235%5Ev38%5Epc_relevant_anti_t3&utm_relevant_index=4
excel转pdf :
https://blog.csdn.net/sqL520lT/article/details/131430166
https://www.cnblogs.com/iyyy/p/9346935.html