如何使用java从PDF中提取图像。（How to extract an image from a PDF using java.）

问题描述 (Problem Description)

如何使用java从PDF中提取图像。

解决方案 (Solution)

以下是使用Java从PDF中提取图像的程序。

import java.awt.image.BufferedImage; 
import java.io.File; 
import javax.imageio.ImageIO; 
import org.apache.pdfbox.pdmodel.PDDocument; 
import org.apache.pdfbox.rendering.PDFRenderer;  
public class ExtractImageFromPdf {  
   public static void main(String args[]) throws Exception {  
      //Loading an existing PDF document 
      File file = new File("C:/pdfBox/ExtractImage_IP.pdf"); 
      PDDocument document = PDDocument.load(file); 
      //Instantiating the PDFRenderer class 
      PDFRenderer renderer = new PDFRenderer(document);  
      //Rendering an image from the PDF document 
      BufferedImage image = renderer.renderImage(0);  
      //Writing the image to a file 
      ImageIO.write(image, "JPEG", new File("C:/pdfBox/ExtractImage_OP.png")); 
      System.out.println("Image created"); 
      //Closing the document 
      document.close();  
   } 
}

输入 (Input)

输出 (Output)