word在线预览 (含doc,docx等)

客官°小女子只卖身不卖艺 2022-11-11 05:49 304阅读 0赞

思路：

项目中遇到这种在线预览，绝大部分的解决方案是word转pdf  然后调用pdfjs去完成页面预览。

1.引入pom依赖

<dependency>
                <groupId>com.aspose</groupId>
                <artifactId>aspose-words</artifactId>
                <version>15.8.0-jdk16</version>
            </dependency>

上代码！

controller

/**
         *@description 预览文档（word转pdf预览）
         *@param
         *@return 
         *@creator ly
         *@date 2021/3/19
         */
        @GetMapping("/previewDoc")
        public void previewReportPdf(@RequestParam(name="imageId") Integer imageId ,@RequestParam(name = "fileName") String fileName, HttpServletResponse response, HttpServletRequest request) throws Exception {
             iFileUploadService.previewWord(imageId, fileName , response, request);
        }

serviceIml实现

/**
         *@description word转pdf，预览pdf
         *@param
         *@return
         *@creator ly
         *@date 2021/3/19
         */
        @Override
        public void previewWord(Integer imageId, String fileName, HttpServletResponse response, HttpServletRequest request) throws Exception {
            Validate.notNull(imageId,tipsConfig.getParam_isblank());
            Validate.notNull(fileName,tipsConfig.getParam_isblank());
            ProductParam productParam = new ProductParam();
            productParam.setProductId(Long.valueOf(imageId));
            DsProduct dsProduct = iDsProductMapper.findListByParam(productParam).get(0);
            //根据产品id获取相关联的文件
            List<DsProductFile> dsProductFileList = iDsProductFileMapper.selectByProductId(dsProduct.getProductId());
            if (dsProductFileList.isEmpty()) {
                return;
            }
            //相对路径
            String relativePath = dsProduct.getRelativePath() + "/" + fileName;
            //服务器对象
            Server server = serverMapper.selectByPkId(dsProduct.getServerId());
            String fileAbs = server.getDataPath() + relativePath;
            String renameFileAbs = server.getDataPath() + dsProduct.getRelativePath()+ "/"+fileName.substring(0,fileName.lastIndexOf("."))+REPORT_FILE_FORMAT_PDF;
    
            fileAbs = fileAbs.replace("\\", File.separator);
            //word转pdf
            File fPdf = PdfUtils.wordToPdf(fileAbs, renameFileAbs);
            //pdf预览
            DownloadUtil.previewReportPdf(renameFileAbs,  response);
        }

wordToPdf方法

public static File wordToPdf(String destFullPath, String path){
            LOGGER.info("word:" + destFullPath + "pdf:" +path);
            return DocUtils.docToPdf(destFullPath, path);
        }

/**
         * DOC转PDF,返回File
         * @param fromPath
         * @param toPath
         */
        public static File docToPdf(String fromPath,String toPath) {
            source2Traget(fromPath,toPath,SaveFormat.PDF);
            return new File(toPath);
        }

public static void source2Traget(String sPath,String tPath,int type) {
            logger.info("DocUtils:文档转换开始》》》》》》》》》》》》");
            logger.info("DocUtils:文档转换资源路径为》》》》》》》》》》》》"+sPath);
            logger.info("DocUtils:文档转换目标路径为》》》》》》》》》》》》"+tPath);
            logger.info("DocUtils:文档转换类型为》》》》》》》》》》》》"+type);
            if (!getLicense()) {          // 验证License 若不验证则转化出的pdf文档会有水印产生
                logger.info("DocUtils:文档转化验证License失败！》》》》》》");
            }
            if(!ArrayUtils.contains(formatType,type)){
                logger.info("DocUtils:文档转化失败,类型不存在！》》》》》》"+type);
            }
            try {
                File file = new File(tPath);  //新建一个空白pdf文档
                FileOutputStream os = new FileOutputStream(file);
                Document doc = new Document(sPath); //sPath是将要被转化的word文档
                doc.save(os, type);
                os.flush();
                os.close();
                logger.error("DocUtils:文档转化成功》》》》》》");
            } catch (Exception e) {
                logger.error("DocUtils:文档转化失败》》》》》》"+e.getMessage());
            }
            logger.info("DocUtils:文档转换结束》》》》》》》》》》》》");
        }

/**
         * 验证是否有去水印xml
         * @return
         */
        public static boolean getLicense() {
            boolean result = false;
            try {
                InputStream in =PropertyUtil.class.getClassLoader().getResourceAsStream("license/license.xml");
                License aposeLic = new License();
                aposeLic.setLicense(in);
                in.close();
                result = true;
            } catch (Exception e) {
                e.printStackTrace();
            }
            return result;
        }

/**
     * 属性文件的操作
     * @version <1> 2017-05-08 cxj : Created.
     */
    public class PropertyUtil {
    
        public static String getPropertiesForConfig(String key){
            return  getProperties("config.properties").getProperty(key);
        }
    
        public static String getPropertiesForConfig(String key,String configFileName){
            return  getProperties(configFileName).getProperty(key);
        }
    
        /**
         * 读取属性文件
         * @version <1> 2017-05-08 cxj : Created.
         */
        public static Properties getProperties(String propFile){
            Properties p = null;
            try{
                InputStream in = PropertyUtil.class.getClassLoader().getResourceAsStream(propFile);
                p = new Properties();
                p.load(in);
            }catch(Exception e){
                e.printStackTrace();
            }
            return p;
        }
    }

previewReportPdf方法：

/**
        * 预览pdf文件报告
        * @param filePath 文件路径
        * @return:
        * @version <1> 2020/11/5 13:54 HanShuGuang:Created.
        */
        public static void previewReportPdf(String filePath, HttpServletResponse response) throws Exception{
    
            InputStream iStream = null;
            OutputStream outStrem = null;
            try {
                File file = new File(filePath);
                response.setContentType("application/pdf");
                response.setHeader("Access-Control-Allow-Headers", "Range");
                response.setHeader("Access-Control-Expose-Headers", "Accept-Ranges, Content-Encoding, Content-Length, Content-Range");
                outStrem = response.getOutputStream();
                if(file.exists()) {
                    iStream = new FileInputStream(filePath);
                    byte[] data = readInputStream(iStream);
                    outStrem.write(data);
                    outStrem.flush();
                }
            } catch (Exception ex) {
                ex.printStackTrace();
                throw ex;
            }finally {
                if(iStream != null){
                    try {
                        iStream.close();
                    } catch (IOException e) {
    
                        e.printStackTrace();
                    }
                }
                if(outStrem != null){
                    try {
                        outStrem.close();
                    } catch (IOException e) {
    
                        e.printStackTrace();
                    }
                }
            }
        }

注意  license/license.xml是去掉水印的关键！！！

附上文件位置：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNzAyMDk3Nw_size_16_color_FFFFFF_t_70][]

license.xml代码：

<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>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zNzAyMDk3Nw_size_16_color_FFFFFF_t_70]: /images/20221022/8111459a3e4b46a485333579f05bb5db.png