📅  最后修改于: 2023-12-03 15:37:36.074000             🧑  作者: Mango
在实际开发中,有时需要将PDF文件转换为Word文档以方便编辑和修改。本文将介绍如何在Java中实现这一操作。
Apache PDFBOX是一个用于PDF文档处理的Java库,可以用来提取和转换PDF中的文本和图片。
<dependency>
<groupId>org.apache.pdfbox</groupId>
<artifactId>pdfbox</artifactId>
<version>2.0.12</version>
</dependency>
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.text.PDFTextStripper;
public class PdfParser {
public static String parse(String filePath) {
try (PDDocument document=PDDocument.load(new File(filePath))) {
PDFTextStripper pdfStripper=new PDFTextStripper();
pdfStripper.setSortByPosition(true);
pdfStripper.setStartPage(1);
pdfStripper.setEndPage(document.getNumberOfPages());
return pdfStripper.getText(document);
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
import org.apache.commons.io.FileUtils;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.rendering.PDFRenderer;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;
public class PdfParser {
public static void parse(String filePath) {
try (PDDocument document=PDDocument.load(new File(filePath))) {
PDFRenderer pdfRenderer=new PDFRenderer(document);
for (int i=0; i<document.getNumberOfPages(); i++) {
BufferedImage image=pdfRenderer.renderImageWithDPI(i, 100);
String fileName="image_"+i+".png";
ImageIO.write(image, "png", new File(fileName));
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
Apache POI是一个用于创建、读取和修改Microsoft Office文档的Java API。使用Apache POI我们可以创建Word文档,并将解析出来的PDF文本填充进去。
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>4.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>4.1.1</version>
</dependency>
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import java.io.FileOutputStream;
import java.io.IOException;
public class WordGenerator {
public static void generate(String text, String filePath) {
try (XWPFDocument document=new XWPFDocument()) {
XWPFParagraph paragraph=document.createParagraph();
XWPFRun run=paragraph.createRun();
run.setText(text);
document.write(new FileOutputStream(filePath));
} catch (IOException e) {
e.printStackTrace();
}
}
}
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 java.io.*;
public class PdfToWordConverter {
public static void main(String[] args) {
String pdfFilePath="path/to/pdf/file.pdf";
String wordFilePath="path/to/word/file.docx";
String text=PdfParser.parse(pdfFilePath);
WordGenerator.generate(text, wordFilePath);
}
static class PdfParser {
public static String parse(String filePath) {
try (PDDocument document=PDDocument.load(new File(filePath))) {
PDFTextStripper pdfStripper=new PDFTextStripper();
pdfStripper.setSortByPosition(true);
pdfStripper.setStartPage(1);
pdfStripper.setEndPage(document.getNumberOfPages());
return pdfStripper.getText(document);
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
static class WordGenerator {
public static void generate(String text, String filePath) {
try (XWPFDocument document=new XWPFDocument()) {
XWPFParagraph paragraph=document.createParagraph();
XWPFRun run=paragraph.createRun();
run.setText(text);
document.write(new FileOutputStream(filePath));
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
以上是将PDF转换为Word的简单实现方法。此方法存在一些限制,例如如果PDF文档中包含复杂的表格和图片,则无法准确地提取其中的信息。但对于一般的文本转换,此方法是可以使用的。