springboot 将文档转换为pdf进行在线浏览

实现想法是将文档转换为pdf进行在线浏览，上代码

 

pom

  
        
            com.aspose
            aspose-words
            15.8.0
        
        
            com.aspose
            aspose-cells
            8.5.2
        
        
            com.aspose
            aspose-slides
            15.9.0
        

工具类

主要调用

officeToPdf(uploadPath +relativePath + fileName, parsePath, viewModel.getFileExt(), parsePath + fileName);

package com.demo.Utils;

import com.aspose.cells.License;
import com.aspose.cells.Workbook;
import com.aspose.slides.Presentation;
import com.aspose.slides.SaveFormat;
import com.aspose.words.Document;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;

/**
 * @ClassName：FileToPdfUtils
 * @Description: 文件转pdf工具类
 * @Author: liuhm
 * @Date: 2019/10/10 13:38
 */
public class FileToPdfUtils {
    
    /**
     * @description: 验证License
     * @params: 
     * @return: 
     * @author: liuhm
     * @Date: 2019/10/10 13:40
     */
    public static boolean getLicense() {
        boolean result = false;
        try {
            //  license.xml应放在..\WebRoot\WEB-INF\classes路径下
            InputStream is = FileToPdfUtils.class.getClassLoader().getResourceAsStream("license.xml");
            License aposeLic = new License();
            aposeLic.setLicense(is);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
    /**
     * @description:  excel转pdf
     * @params:  Address:源文件地址,filepathWithoutFileName:不含文件路径,filepath:转换后文件路径
     * @return: 
     * @author: liuhm
     * @Date: 2019/10/10 13:41
     */
    public static void excel2pdf(String Address,String filepathWithoutFileName,String fileExt,String filepath) {
        // 验证License 若不验证则转化出的pdf文档会有水印产生
        if (!getLicense()) {
            return;
        }
        try {
            long old = System.currentTimeMillis();
            // 原始excel路径
            Workbook wb = new Workbook(Address);
            //验证路径
            try {
                if (!(new File(filepathWithoutFileName).isDirectory())) {
                    new File(filepathWithoutFileName).mkdirs();
                }
            } catch (SecurityException e) {
                e.printStackTrace();
            }
            // 输出路径
            File pdfFile = new File(filepath.replace(fileExt,"pdf"));
            FileOutputStream fileOS = new FileOutputStream(pdfFile);

            wb.save(fileOS,com.aspose.cells.SaveFormat.PDF);

            long now = System.currentTimeMillis();
            //System.out.println("共耗时：" + ((now - old) / 1000.0) + "秒");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * @description: ppt转pdf
     * @params: Address:源文件地址,filepathWithoutFileName:不含文件路径,filepath:转换后文件路径
     * @return:
     * @author: liuhm
     * @Date: 2019/10/10 13:46
     */
    public static void ppt2pdf(String Address,String filepathWithoutFileName,String fileExt, String filepath) {
        // 验证License 若不验证则转化出的pdf文档会有水印产生
        if (!getLicense()) {
            return;
        }
        try {
            long old = System.currentTimeMillis();
            //验证路径
            try {
                if (!(new File(filepathWithoutFileName).isDirectory())) {
                    new File(filepathWithoutFileName).mkdirs();
                }
            } catch (SecurityException e) {
                e.printStackTrace();
            }
            //新建一个空白pdf文档
            File file = new File(filepath.replace(fileExt, "pdf"));
            //输入pdf路径
            Presentation pres = new Presentation(Address);
            FileOutputStream fileOS = new FileOutputStream(file);
            pres.save(fileOS, SaveFormat.Pdf);
            fileOS.close();
            long now = System.currentTimeMillis();
            //转化用时
            System.out.println("共耗时：" + ((now - old) / 1000.0) + "秒");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * @description: doc转pdf
     * @params:  Address:源文件地址,filepathWithoutFileName:不含文件路径,filepath:转换后文件路径
     * @return:
     * @author: liuhm
     * @Date: 2019/10/10 13:46
     */
    public static void doc2pdf(String Address, String filepathWithoutFileName, String fileExt, String filepath) {
        // 验证License 若不验证则转化出的pdf文档会有水印产生
        if (!getLicense()) {
            return;
        }
        try {
            long old = System.currentTimeMillis();
            //新建一个空白pdf文档
            try {
                if (!(new File(filepathWithoutFileName).isDirectory())) {
                    new File(filepathWithoutFileName).mkdirs();
                }
            } catch (SecurityException e) {
                e.printStackTrace();
            }
            //输出路径
            File file = new File(filepath.replace(fileExt, "pdf"));
            FileOutputStream os = new FileOutputStream(file);

            Document doc = new Document(Address);

            doc.save(os, com.aspose.words.SaveFormat.PDF);
            long now = System.currentTimeMillis();
            //转化用时
            //System.out.println("共耗时：" + ((now - old) / 1000.0) + "秒");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * @description:  文件转pdf
     * @params:  path:源文件地址,filepathWithoutFileName:不含文件路径,filepath:转换后文件路径
     * @return:
     * @author: liuhm
     * @Date: 2019/10/10 15:17
     */
    public void officeToPdf(String path, String filepathWithoutFileName, String fileExt, String filePath) {
        //office文档转pdf
        //String pdfFileName = path.substring(0, path.lastIndexOf("."));
        if ("doc".equals(fileExt) || "docx".equals(fileExt)) {
            FileToPdfUtils.doc2pdf(path, filepathWithoutFileName, fileExt, filePath);
        }
        if ("xls".equals(fileExt) || "xlsx".equals(fileExt)) {
            FileToPdfUtils.excel2pdf(path, filepathWithoutFileName, fileExt, filePath);
        }
        if ("ppt".equals(fileExt) || "pptx".equals(fileExt)) {
            FileToPdfUtils.ppt2pdf(path, filepathWithoutFileName, fileExt, filePath);
        }


    }
   
}

license.xml  好像这个没什么用

  
    
      Aspose.Total for Java
      Aspose.Words for Java
    
    Enterprise
    20991231
    20991231
    8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7
  
  sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=

注意：如果部署版本后发现转pdf是乱码，请在该环境安装字体