Java将Word/Excel转换成PDF—aspose工具

以你之姓@ 2022-12-30 04:59 965阅读 0赞

最近做了一个项目，客户需求：将Word/Excel转换成PDF。在网上找了找了很多资料，最后整理了最好用、最简单的一版，方便自己后续使用。  
**（测试案例下载地址：**[点击下载][Link 1]**）**

### 一、word转pdf简单介绍 ###

**1、引入aspose-words-15.8.0-jdk16 jar**  
使用aspose需要在项目里加入一个license.xml，不然生成的pdf会有水印：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0xPVkVfTWVfXw_size_16_color_FFFFFF_t_70][]

`lib`：存放Jar包的位置。

**2、在项目resource文件夹下添加license.xml许可文件**

<License>
      <Data>
        <Products>
          <Product>Aspose.Total for Java</Product>
          <Product>Aspose.Words for Java</Product>
        </Products>
        <EditionType>Enterprise</EditionType>
        <SubscriptionExpiry>20991231</SubscriptionExpiry>
        <LicenseExpiry>20991231</LicenseExpiry>
        <SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber>
      </Data>
      <Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature>
    </License>

**3、word转pdf工具类:**

package xxx;
    
    import com.aspose.words.Document;
    import com.aspose.words.License;
    import com.aspose.words.SaveFormat;
    
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    
    /**
     * 由于ASPOSE比较吃内存，操作大一点的文件就会堆溢出，所以请先设置好java虚拟机参数：-Xms512m -Xmx512m(参考值)<br>
     */
    public class WordToPdfUtil {
    
        /**
         * 获取license
         *
         * @return
         */
        public static boolean getLicense() {
            boolean result = false;
            try {
                InputStream is = WordToPdfUtil.class.getClassLoader().getResourceAsStream("\\license.xml");
                License aposeLic = new License();
                aposeLic.setLicense(is);
                result = true;
            } catch (Exception e) {
                e.printStackTrace();
            }
            return result;
        }
    
        /**
         * 支持DOC, DOCX, OOXML, RTF, HTML, OpenDocument, PDF, EPUB, XPS, SWF等相互转换<br>
         *
         * @param wordfilePath [原始excel路径]
         * @param pdfFilePath  [输出路径]
         */
        public static Boolean wordConvertToPdf(String wordfilePath, String pdfFilePath) {
            // 验证License
            if (!getLicense()) {
                return false;
            }
    
            try {
                // 原始word路径
                Document doc = new Document(wordfilePath);
                // 输出路径
                File pdfFile = new File(pdfFilePath);
                FileOutputStream fileOS = new FileOutputStream(pdfFile);
                doc.save(fileOS, SaveFormat.PDF);
                return true;
            } catch (Exception e) {
                e.printStackTrace();
                return false;
            }
        }
    
    }

**4、测试Demo:**

import com.aspose.words.Document;
    import com.aspose.words.License;
    import com.aspose.words.SaveFormat;
    import xxx.WordToPdfUtil;
    
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    
    /**
     *  @author: xxxx
     *  @Date: 2020/12/24 15:10
     *  @Description: excel转pdf测试用例
     */
    public class WordToPdfTest {
    
        public static void main(String[] args) {
            String sourcePath = "D:\\CYD\\公司领导测评操作手册20201205.docx";
            String targetPath = "D:\\test.pdf";
            // 验证License
            if (!WordToPdfUtil.getLicense()) {
                return;
            }
    
            long old = System.currentTimeMillis();
            if (WordToPdfUtil.wordConvertToPdf(sourcePath,targetPath)) {
                long now = System.currentTimeMillis();
                System.out.println("word转pdf成功,共耗时：" + ((now - old) / 1000.0) + "秒");
            }
    
        }
    }

** 5、consol控制台最终运行结果：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0xPVkVfTWVfXw_size_16_color_FFFFFF_t_70 1][]

--------------------

###  二、Excel转PDF简单介绍 ###

**1、引入aspose-cells-8.5.2 jar**

Excel转PDF同Word转PDF一样，引入相对应的jar包和license.xml许可文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0xPVkVfTWVfXw_size_16_color_FFFFFF_t_70 2][]

**2、在项目resource文件夹下添加license.xml许可文件（代码同word中的license.xml）**

**3、excel转pdf工具类:**

package xxx;
    
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    
    import com.aspose.cells.License;
    import com.aspose.cells.SaveFormat;
    import com.aspose.cells.Workbook;
    
    /**
     * 由于ASPOSE比较吃内存，操作大一点的文件就会堆溢出，所以请先设置好java虚拟机参数：-Xms512m -Xmx512m(参考值)<br>
     */
    public class ExcelToPdfUtil {
    
        /**
         * 获取license
         *
         * @return
         */
        public static boolean getLicense() {
            boolean result = false;
            try {
                InputStream is = ExcelToPdfUtil.class.getClassLoader().getResourceAsStream("\\license.xml");
                License aposeLic = new License();
                aposeLic.setLicense(is);
                result = true;
            } catch (Exception e) {
                e.printStackTrace();
            }
            return result;
        }
    
        /**
         * 支持DOC, DOCX, OOXML, RTF, HTML, OpenDocument, PDF, EPUB, XPS, SWF等相互转换<br>
         *
         * @param excelfilePath [原始excel路径]
         * @param pdfFilePath   [输出路径]
         */
    
        public static Boolean excelConvertToPdf(String excelfilePath, String pdfFilePath) {
            // 验证License
            if (!getLicense()) {
                return false;
            }
    
            try {
                // 原始excel路径
                Workbook wb = new Workbook(excelfilePath);
                // 输出路径
                File pdfFile = new File(pdfFilePath);
                FileOutputStream fileOS = new FileOutputStream(pdfFile);
                wb.save(fileOS, SaveFormat.PDF);
                return true;
            } catch (Exception e) {
                e.printStackTrace();
                return false;
            }
        }
    
    }

**4、测试Demo:**

import com.aspose.cells.License;
    import com.aspose.cells.SaveFormat;
    import com.aspose.cells.Workbook;
    import xxx.ExcelToPdfUtil;
    
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.InputStream;
    
    /**
     *  @author: xxxx
     *  @Date: 2020/12/24 15:10
     *  @Description: excel转pdf测试用例
     */
    public class ExcelToPdfTest {
    
        public static void main(String[] args) {
            String sourcePath = "D:\\test.xlsx";
            String targetPath = "D:\\test.pdf";
            // 验证License
            if (!ExcelToPdfUtil.getLicense()) {
                return;
            }
    
            long old = System.currentTimeMillis();
            if (ExcelToPdfUtil.excelConvertToPdf(sourcePath, targetPath)) {
                long now = System.currentTimeMillis();
                System.out.println("Excel转Pdf成功，共耗时：" + ((now - old) / 1000.0) + "秒");
            }
    
        }
    }

后续更多方法有待更新......

--------------------

### **三、pdf加水印** ###

这里没有采用aspose下的pdf，不太好用，不过测试案例中有用例，感兴趣的同学可以自行下载学习。

对于pdf加水印，我采用 Spire 组件进行处理的。（具体可参考：[Spire组件官方文档][Spire]）

**1.pom文件引入Spire组件需要用到的依赖**

<dependencies>
    
            
            <dependency>
                <groupId>e-iceblue</groupId>
                <artifactId>spire.doc.free</artifactId>
                <version>3.9.0</version>
            </dependency>
            <dependency>
                <groupId>e-iceblue</groupId>
                <artifactId>spire.pdf.free</artifactId>
                <version>3.9.0</version>
            </dependency>
            <dependency>
                <groupId>com.lowagie</groupId>
                <artifactId>itext</artifactId>
                <version>2.1.7</version>
            </dependency>
    
        </dependencies>

**2.对pdf加水印的工具类：**

package xxx.util;
    
    import com.aspose.pdf.*;
    import com.lowagie.text.pdf.PdfReader;
    import com.spire.pdf.PdfDocument;
    import com.spire.pdf.PdfPageBase;
    import com.spire.pdf.graphics.*;
    
    import javax.imageio.ImageIO;
    import java.awt.*;
    import java.awt.Color;
    import java.awt.Font;
    import java.awt.geom.Dimension2D;
    import java.awt.geom.Point2D;
    import java.awt.geom.Rectangle2D;
    import java.io.*;
    
    public class PDFWatermark {
    
        /**
         * @param page      要添加水印的页面
         * @param imageFile 水印图片路径
         */
        public static void AddImageWatermark(PdfPageBase page, String imageFile) {
            page.setBackgroundImage(imageFile);
            Rectangle2D rect = new Rectangle2D.Float();
            rect.setFrame(page.getClientSize().getWidth() / 2 - 100, page.getClientSize().getHeight() / 2 - 100, 200, 200);
            page.setBackgroundRegion(rect);
        }
    
        /**
         * @param page          要添加水印的页面
         * @param textWatermark 水印文字
         */
        public static void AddTextWatermark(PdfPageBase page, String textWatermark) {
            Dimension2D dimension2D = new Dimension();
            dimension2D.setSize(page.getCanvas().getClientSize().getWidth() / 3, page.getCanvas().getClientSize().getHeight() / 3);
            PdfTilingBrush brush = new PdfTilingBrush(dimension2D);
            brush.getGraphics().setTransparency(0.3F);
            brush.getGraphics().save();
            brush.getGraphics().translateTransform((float) brush.getSize().getWidth() / 2, (float) brush.getSize().getHeight() / 2);
            brush.getGraphics().rotateTransform(-45);
            brush.getGraphics().drawString(textWatermark, new PdfTrueTypeFont(new Font("新宋体", Font.PLAIN, 30), true), PdfBrushes.getGray(), 0, 0, new PdfStringFormat(PdfTextAlignment.Center));
            brush.getGraphics().restore();
            brush.getGraphics().setTransparency(1);
            Rectangle2D loRect = new Rectangle2D.Float();
            loRect.setFrame(new Point2D.Float(0, 0), page.getCanvas().getClientSize());
            page.getCanvas().drawRectangle(brush, loRect);
        }
    
        /**
         * @param sourceFile 需要重新重命名的图片路径
         * @param targetPath 重命名的图片路径保存地址
         */
        public static void fileCopyRightWay(String sourceFile, String targetPath) {
            try {
                //读取源地址文件的字节流
                FileInputStream in = new FileInputStream(sourceFile);
                FileOutputStream out = new FileOutputStream(targetPath);
                byte[] bs = new byte[1026];
                int count = 0;
                while ((count = in.read(bs, 0, bs.length)) != -1) {
                    //把读取到的字节流写入到目的地址的文件里面
                    out.write(bs, 0, count);
                }
                //刷新下输出流
                out.flush();
                // 关闭输入流和输出流
                out.close();
                out.close();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        
    
    }

**3.测试demo:**

pdf加水印测试demo：

import com.lowagie.text.pdf.PdfReader;
    import com.spire.pdf.PdfDocument;
    import xxx.util.PDFWatermark;
    import java.io.IOException;
    
    /**
     *  @author: xxxx
     *  @Date: 2020/12/24 15:10
     *  @Description: pdf加水印
     */
    public class PDFWatermarkTest {
    
        public static void main(String[] args) throws IOException {
            //原pdf文件路径
            String sourcePath = "D:\\test.pdf";
            //目标pdf文件路径
            String targetPath = "D:\\log\\Watermark22.pdf";
            //加载原pdf文档
            PdfDocument pdf = new PdfDocument();
            pdf.loadFromFile(sourcePath);
            PdfReader reader = new PdfReader(sourcePath);
            int total = reader.getNumberOfPages();
            for (int i = 0; i < total; i++) {
                PDFWatermark.AddTextWatermark(pdf.getPages().get(i), "已审阅");
            }
            //保存
            pdf.saveToFile(targetPath);
            PDFWatermark.addWatermark(sourcePath, "hahah");
            //关闭
            pdf.close();
        }
    
    }

pdf加水印后，将每一页pdf拆分出来保存为图片，然后对每一张图片进行了重命名：

import com.lowagie.text.pdf.PdfReader;
    import com.spire.pdf.PdfDocument;
    import xxx.util.PDFWatermark;
    
    import javax.imageio.ImageIO;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;
    
    /**
     *  @author: xxxx
     *  @Date: 2020/12/24 15:10
     *  @Description: pdf加水印
     */
    public class PDFWatermarkToPngTest {
        public static void main(String[] args) throws IOException {
            String sourcePath = "D:\\log\\Watermark22.pdf";
            String targetPath = "D:\\log\\";
            PdfDocument pdf1 = new PdfDocument();
            pdf1.loadFromFile(sourcePath);
            PdfReader reader = new PdfReader(sourcePath);
            BufferedImage image;
            int total1 = reader.getNumberOfPages();
            for(int i =0 ; i<total1;i++){
                image = pdf1.saveAsImage(i);//将每一页pdf拆分出来保存为图片
                File file = new File(String.format(targetPath+"Watermark33"+i+".png",i));
                ImageIO.write(image,"PNG",file);
                PDFWatermark.fileCopyRightWay(targetPath+"Watermark33"+i+".png",targetPath+"测试3_"+i+".png");//对图片进行重命名
            }
            pdf1.close();
    
        }
    
    }

警告：仅供学习研究使用哦!!!

[Link 1]: https://github.com/L-Melted/aspose-word-excel.git
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0xPVkVfTWVfXw_size_16_color_FFFFFF_t_70]: /images/20221120/871f49d0e5da4f5ab777537e2e135a6b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0xPVkVfTWVfXw_size_16_color_FFFFFF_t_70 1]: /images/20221120/5262f990dca74937bb63880bc28c8c7d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0xPVkVfTWVfXw_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20201224124137842.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0xPVkVfTWVfXw==,size_16,color_FFFFFF,t_70
[Spire]: https://www.e-iceblue.cn/pdf_java_watermark/java-add-text-watermark-to-pdf-document.html