import java.awt.image.BufferedImage;  
import java.io.File;  
import java.io.IOException;  
  
import javax.imageio.ImageIO;  
  
import org.apache.pdfbox.pdmodel.PDDocument;  
import org.apache.pdfbox.rendering.PDFRenderer;  
  
public class PDF2IMGTest {  
  
    public static void main(String[] args) {  
        File file = new File("d:\\111.pdf");  
        try {  
            PDDocument doc = PDDocument.load(file);  
            PDFRenderer renderer = new PDFRenderer(doc);  
            int pageCount = doc.getNumberOfPages();  
            for (int i = 0; i < pageCount; i++) {  
                // 方式1,第二個引數是設定縮放比(即畫素)  
                BufferedImage image = renderer.renderImageWithDPI(i, 100);  
                // 方式2,第二個引數是設定縮放比(即畫素)  
                // BufferedImage image = renderer.renderImage(i, 2.5f);  
                ImageIO.write(image, "jpg", new File("C:\\6.jpg"));  
            }  
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }  
}  
 

自己測試可以用的程式碼：

首先需要下載l兩個jar:

pdfbox-2.0.8.jar

  fontbox-2.0.8.jar

https://pdfbox.apache.org/download.cgi#20x 這是下載地址，可以自己下下載