java 使用pdfbox分割pdf文件,返回 byte[]

亦凉 2022-11-04 14:24 295阅读 0赞

业务需求上传一张有8张发票合起来的pdf格式的文件,现在要把8张发票都扫描出来,而腾讯云只支持一个个pdf格式扫描,这样需要把文件切割成8张pdf格式发票.  
需要用到apache的pdfbox  
在pom中加入

<dependency>
                <groupId>org.apache.pdfbox</groupId>
                <artifactId>pdfbox-app</artifactId>
                <version>1.8.10</version>
    </dependency>

这个类可以切割pdf文件,相关代码  
先把附件加载到PDDocument

PDDocument load = PDDocument.load(file.getInputStream());

然后用Splitter切割

Splitter splitter = new Splitter();
    List<PDDocument> pages = splitter.split(load);

切割成功后,把数据循环

Iterator<PDDocument> iterator = pages.iterator();

完整代码

PDDocument load = PDDocument.load(file.getInputStream());
    Splitter splitter = new Splitter();
     List<PDDocument> pages = splitter.split(load);
     Iterator<PDDocument> iterator = pages.iterator();
     JSONArray resultDataList = new JSONArray();
     while (iterator.hasNext()) {
         PDDocument next = iterator.next();
         ByteArrayOutputStream output = new ByteArrayOutputStream();
         next.save(output);
         logger.info("byteArray: {}", output.toByteArray());
         param.put("imageBase64", base64Encoder.encode(output.toByteArray()));
         JSONObject jsonObject = sendCutAndSortRecognition(url_paas_billInfo, param, token);
         if(date.isEmpty()){
             date = jsonObject;
         }
         resultDataList.addAll(jsonObject.getJSONArray("resultDataList"));
     }

返回byte的代码,output.toByteArray()返回的就是byte\[\]

ByteArrayOutputStream output = new ByteArrayOutputStream();
    next.save(output);
    output.toByteArray()