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。

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：

xml 复制代码

<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>

创建 Service:

创建一个处理PDF到Word转换的服务类:

java 复制代码

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();
        }
    }
}

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.

java 复制代码

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);
    }
}