Spring Boot写一个简单的PDF到Word的转换程序

使用Spring Boot创建PDF到Word的转换程序需要几个步骤。可以使用现有的库来处理转换过程。使用ApachePDFBox进行PDF操作和使用ApachePOI创建Word文档的过程。

1. 添加依赖项:
   将以下依赖项添加到“pom.xml”文件中，以在项目中包括PDFBox和POI：

   <dependencies>
       <dependency>
           <groupId>org.apache.pdfbox</groupId>
           <artifactId>pdfbox</artifactId>
           <version>2.0.27</version>
       </dependency>
       <dependency>
           <groupId>org.apache.poi</groupId>
           <artifactId>poi</artifactId>
           <version>4.1.2</version>
       </dependency>
       <dependency>
           <groupId>org.apache.poi</groupId>
           <artifactId>poi-ooxml</artifactId>
           <version>4.1.2</version>
       </dependency>
   </dependencies>
   

2. 创建 Service:
   创建一个处理PDF到Word转换的服务类:

   import org.apache.pdfbox.pdmodel.PDDocument;
   import org.apache.pdfbox.text.PDFTextStripper;
   import org.apache.poi.xwpf.usermodel.XWPFDocument;
   import org.apache.poi.xwpf.usermodel.XWPFParagraph;
   import org.apache.poi.xwpf.usermodel.XWPFRun;
   import org.springframework.stereotype.Service;
   
   import java.io.ByteArrayInputStream;
   import java.io.ByteArrayOutputStream;
   import java.io.IOException;
   
   @Service
   public class PdfToWordConverterService {
   
       public byte[] convertPdfToWord(byte[] pdfBytes) throws IOException {
           try (PDDocument pdfDocument = PDDocument.load(new ByteArrayInputStream(pdfBytes));
                XWPFDocument wordDocument = new XWPFDocument()) {
   
               PDFTextStripper pdfTextStripper = new PDFTextStripper();
               String text = pdfTextStripper.getText(pdfDocument);
   
               XWPFParagraph paragraph = wordDocument.createParagraph();
               XWPFRun run = paragraph.createRun();
               run.setText(text);
   
               ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
               wordDocument.write(outputStream);
               return outputStream.toByteArray();
           }
       }
   }
   

3. 创建控制器:
   创建一个Spring MVC控制器来处理传入的请求。此控制器应使用“PdfToWordConverterService”来执行转换.

   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.web.bind.annotation.PostMapping;
   import org.springframework.web.bind.annotation.RequestBody;
   import org.springframework.web.bind.annotation.RestController;
   
   @RestController
   public class PdfToWordController {
   
       @Autowired
       private PdfToWordConverterService converterService;
   
       @PostMapping("/convert")
       public byte[] convertPdfToWord(@RequestBody byte[] pdfBytes) throws IOException {
           return converterService.convertPdfToWord(pdfBytes);
       }
   }