Word、Excel、PPT转PDF，dwg转svg或png

刺骨的言语ヽ痛彻心扉 2024-03-25 22:17 65阅读 0赞

转pdf的方式有很多，有的依赖windows环境，有的需要在服务器上部署插件，有的转换效果不好，转换效果好又不依赖插件的付费，几经对比采用aspost方式进行文件转换，aspost是付费服务，本文提供破解方式，仅供学习探讨，商业用途需购买许可。

#### 一.导入依赖 ####

##### **1.jar资源下载** #####

链接：[https://pan.baidu.com/s/1AMlmFzmuoNm2JGQrTk340g][https_pan.baidu.com_s_1AMlmFzmuoNm2JGQrTk340g]

提取码：1129

##### **2.jar包引入** #####

付费jar包无法直接通过maven下载，需将下载好的jar包放在本地maven资源库中，部署到服务器时也需将jar包上传至服务器资源库。

<dependency>
                <groupId>com.aspose</groupId>
                <artifactId>aspose.slides</artifactId>
                <version>19.3</version>
            </dependency>
            
            <dependency>
                <groupId>com.aspose</groupId>
                <artifactId>aspose-cells</artifactId>
                <version>8.5.2</version>
            </dependency>
            
            <dependency>
                <groupId>com.aspose</groupId>
                <artifactId>aspose-words</artifactId>
                <version>14.9.0-jdk16</version>
            </dependency>
            
            <dependency>
                <groupId>com.aspose</groupId>
                <artifactId>aspose-cad</artifactId>
                <version>22.7</version>
            </dependency>

##### **3.jar包发送至服务器资源库** #####

参考：[https://blog.csdn.net/secretdaixin/article/details/129041068][https_blog.csdn.net_secretdaixin_article_details_129041068]

#### 二.文件转换工具类 ####

##### **1.Word转PDF** #####

package com.dmp.common.utils.file;
    
    import cn.hutool.core.io.FileUtil;
    import com.aspose.words.Document;
    import com.aspose.words.SaveFormat;
    import lombok.extern.slf4j.Slf4j;
    
    import java.io.File;
    import java.io.InputStream;
    import java.io.OutputStream;
    
    /**
     * @author daixin
     * @version 1.0
     * @description: TODO
     * @date 2023/2/14 15:05
     */
    @Slf4j
    public class WordToPdfUtils {
        public static Boolean convert(File sourceFile, File targetFile) {
            InputStream inputStream = FileUtil.getInputStream(sourceFile);
            OutputStream outputStream = FileUtil.getOutputStream(targetFile);
            return convert(inputStream, outputStream);
        }
        public static Boolean convert(InputStream inputStream, OutputStream outputStream) {
            try {
                Document doc = new Document(inputStream);
                doc.save(outputStream, SaveFormat.PDF);
                return true;
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    }

##### **2.Excel转PDF** #####

package com.dmp.common.utils.file;
    
    import cn.hutool.core.io.FileUtil;
    import com.aspose.cells.*;
    import lombok.SneakyThrows;
    import lombok.extern.slf4j.Slf4j;
    
    import java.io.*;
    import java.util.Iterator;
    
    /**
     * @author daixin
     * @version 1.0
     * @description: TODO
     * @date 2023/2/14 15:09
     */
    @Slf4j
    public class CellToPdfUtils {
    
        /**
         * aspose插件的证书
         */
        private static final String myLicense = "<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>";
    
        public static void convert(File sourceFile, File targetFile) {
            InputStream inputStream = FileUtil.getInputStream(sourceFile);
            OutputStream outputStream = FileUtil.getOutputStream(targetFile);
            convert(inputStream, outputStream);
        }
        public static void convert(InputStream inputStream, OutputStream outputStream) {
            try {
                getCellLicense();
                cellConvert2PDF(inputStream,outputStream);
                //Workbook workbook = new Workbook(sourceFile.getAbsolutePath());
                //workbook.save(targetFile.getAbsolutePath(), com.aspose.cells.SaveFormat.PDF);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    
        public static void cellConvert2PDF(InputStream inputStream, OutputStream outputStream) {
            try {
                Workbook wb = new Workbook(inputStream);
                Iterator<Worksheet> iterator = wb.getWorksheets().iterator();
                while (iterator.hasNext()){
                    Worksheet next = iterator.next();
                    setColumnWithAuto(next);
                }
                PdfSaveOptions saveOptions = new PdfSaveOptions();
                saveOptions.setAllColumnsInOnePagePerSheet(true);
                wb.save(outputStream, saveOptions);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        /**
         * 设置表页的列宽度自适应
         * @param sheet
         */
        @SneakyThrows
        private static void setColumnWithAuto(Worksheet sheet) {
            Cells cells = sheet.getCells();
            int columnCount = cells.getMaxColumn() + 1;//获取表页的最大列数
            int rowCount = cells.getMaxRow();//获取表页的最大行数
            for (int col = 0; col < columnCount; col++) {
                sheet.autoFitColumn(col, 0, rowCount);
            }
            for (int col = 0; col < columnCount; col++) {
                int pixel = cells.getColumnWidthPixel(col) + 30;
                if (pixel > 255) {
                    cells.setColumnWidthPixel(col, 255);
                } else {
                    cells.setColumnWidthPixel(col, pixel);
                }
            }
        }
    
    
        public static boolean getCellLicense() throws IOException {
            boolean result = false;
            ByteArrayInputStream licenseInputStream = null;
            try {
                /*String file = FileConversionUtils.class.getClassLoader().getResource("license.xml").getFile();
                com.aspose.cells.License aposeLic = new com.aspose.cells.License();
                aposeLic.setLicense(new FileInputStream(file));*/
                licenseInputStream = new ByteArrayInputStream(myLicense.getBytes());
                com.aspose.cells.License wordLicense = new com.aspose.cells.License();
                wordLicense.setLicense(licenseInputStream);
                result = true;
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                licenseInputStream.close();
            }
            return result;
        }
    }

##### **3.PPT转PDF** #####

package com.dmp.common.utils.file;
    
    import cn.hutool.core.io.FileUtil;
    import com.aspose.slides.Presentation;
    import lombok.extern.slf4j.Slf4j;
    
    import java.io.*;
    
    /**
     * @author daixin
     * @version 1.0
     * @description: TODO
     * @date 2023/2/14 15:12
     */
    @Slf4j
    public class PowerPointToPdfUtils {
    
        /**
         * aspose插件的证书
         */
        private static final String myLicense = "<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>";
    
        public static Boolean convert(File sourceFile, File targetFile) {
            InputStream inputStream = FileUtil.getInputStream(sourceFile);
            OutputStream outputStream = FileUtil.getOutputStream(targetFile);
            return convert(inputStream, outputStream);
        }
        public static Boolean convert(InputStream inputStream, OutputStream outputStream) {
            try {
                getPPtLicense();
                Presentation pres = new Presentation(inputStream);
                pres.save(outputStream, com.aspose.slides.SaveFormat.Pdf);
                return true;
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        public static boolean getPPtLicense() throws IOException {
            boolean result = false;
            ByteArrayInputStream licenseInputStream = null;
            try {
                licenseInputStream = new ByteArrayInputStream(myLicense.getBytes());
                com.aspose.slides.License aposeLic = new com.aspose.slides.License();
                aposeLic.setLicense(licenseInputStream);
                result = true;
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                licenseInputStream.close();
            }
            return result;
        }
    }

##### **4.dwg转svg/png** #####

package com.dmp.common.utils.file;
    
    import cn.hutool.core.io.FileUtil;
    import com.aspose.cad.Image;
    import com.aspose.cad.fileformats.cad.CadDrawTypeMode;
    import com.aspose.cad.fileformats.cad.CadImage;
    import com.aspose.cad.imageoptions.CadRasterizationOptions;
    import com.aspose.cad.imageoptions.PngOptions;
    import com.aspose.cad.imageoptions.SvgOptions;
    
    import java.io.InputStream;
    import java.io.OutputStream;
    
    /**
     * @author daixin
     * @version 1.0
     * @description: TODO
     * @date 2023/2/14 15:12
     */
    public class CADFileUtils {
    
        /**
         * dwg转换成png
         * @param sourcePath
         * @param targetPath
         */
        public static void dwgToPng(String sourcePath,String targetPath){
            InputStream inputStream = FileUtil.getInputStream(sourcePath);
            OutputStream outputStream = FileUtil.getOutputStream(targetPath);
            dwgToPng(inputStream, outputStream);
        }
    
        /**
         * dwg转换成png
         * @param inputStream
         * @param outputStream
         */
        public static void dwgToPng(InputStream inputStream, OutputStream outputStream){
            PngOptions pngOptions = new PngOptions();
            // 设置png的压缩等级 0 最低 9 最高
            pngOptions.setCompressionLevel(0);
            CadImage image = (CadImage)CadImage.load(inputStream);
            CadRasterizationOptions cadRasterizationOptions = new CadRasterizationOptions();
            //等比缩放
            uniformScale(image,cadRasterizationOptions);
            cadRasterizationOptions.setDrawType(CadDrawTypeMode.UseObjectColor);
            pngOptions.setVectorRasterizationOptions(cadRasterizationOptions);
            image.save(outputStream, pngOptions);
        }
    
        /**
         * dwg转换成Svg
         * @param sourcePath
         * @param targetPath
         */
        public static void dwgToSvg(String sourcePath,String targetPath){
            InputStream inputStream = FileUtil.getInputStream(sourcePath);
            OutputStream outputStream = FileUtil.getOutputStream(targetPath);
            dwgToSvg(inputStream, outputStream);
        }
    
        /**
         * dwg转换成Svg
         * @param inputStream
         * @param outputStream
         */
        public static void dwgToSvg(InputStream inputStream, OutputStream outputStream){
            SvgOptions options = new SvgOptions();
            Image image = Image.load(inputStream);
            CadRasterizationOptions cadRasterizationOptions = new CadRasterizationOptions();
            //等比缩放
            uniformScale(image,cadRasterizationOptions);
            cadRasterizationOptions.setDrawType(CadDrawTypeMode.UseObjectColor);
            options.setVectorRasterizationOptions(cadRasterizationOptions);
            image.save(outputStream,options);
        }
    
        /**
         * 等比缩放
         * @param image
         * @param cadRasterizationOptions
         */
        private static void uniformScale(Image image, CadRasterizationOptions cadRasterizationOptions){
            double width = image.getWidth();
            double height = image.getHeight();
            double baseNum = 2073600;
            double zoom = Math.sqrt(baseNum / width / height);
    
            cadRasterizationOptions.setPageHeight((int)(height * zoom));
            cadRasterizationOptions.setPageWidth((int)(width * zoom));
        }
    }

[https_pan.baidu.com_s_1AMlmFzmuoNm2JGQrTk340g]: https://pan.baidu.com/s/1AMlmFzmuoNm2JGQrTk340g
[https_blog.csdn.net_secretdaixin_article_details_129041068]: https://blog.csdn.net/secretdaixin/article/details/129041068