package pdf;

import java.awt.Image;

import java.awt.Rectangle;import java.awt.p_w_picpath.BufferedImage;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.RandomAccessFile;import java.nio.ByteBuffer;import java.nio.channels.FileChannel;import com.sun.p_w_picpath.codec.jpeg.JPEGCodec;import com.sun.p_w_picpath.codec.jpeg.JPEGImageEncoder;import com.sun.pdfview.PDFFile;import com.sun.pdfview.PDFPage;

public class PdfToJpgTest {

 public static void setup(File file) throws IOException {   // load a pdf from a byte buffer  /*File file = new File(    "c://xxxxx.pdf");*/  RandomAccessFile raf = new RandomAccessFile(file, "r");  FileChannel channel = raf.getChannel();  ByteBuffer buf = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel    .size());  PDFFile pdffile = new PDFFile(buf);

  System.out.println("页数： " + pdffile.getNumPages());

  for (int i = 1; i <= pdffile.getNumPages(); i++) {

   // draw the first page to an p_w_picpath   PDFPage page = pdffile.getPage(i);

   // get the width and height for the doc at the default zoom

   Rectangle rect = new Rectangle(0, 0, (int) page.getBBox()     .getWidth(), (int) page.getBBox().getHeight());

   // generate the p_w_picpath

   Image img = page.getImage(rect.width, rect.height, // width &                // height     rect, // clip rect     null, // null for the ImageObserver     true, // fill background with white     true // block until drawing is done     );

   BufferedImage tag = new BufferedImage(rect.width, rect.height,

     BufferedImage.TYPE_INT_RGB);   tag.getGraphics().drawImage(img, 0, 0, rect.width, rect.height,     null);   FileOutputStream out = new FileOutputStream(     "C:/Users/Bonnie/Desktop/内容发布/img/"+file.getName()+ i + ".jpg"); // 输出到文件流   JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);   encoder.encode(tag); // JPEG编码

   out.close();

  }

  // show the p_w_picpath in a frame

  // JFrame frame = new JFrame("PDF Test");  // frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  // frame.add(new JLabel(new ImageIcon(img)));  // frame.pack();  // frame.setVisible(true); }  public static void showAllFiles(File dir) throws Exception{     int pdfCount=0;      File[] fs = dir.listFiles();      for(int i=0; i<fs.length; i++){         if(fs[i].isDirectory()){             try{              showAllFiles(fs[i]);            }catch(Exception e){}        }else{          String ffHouZhui=fs[i].getName().substring(fs[i].getName().lastIndexOf(".")+1,fs[i].getName().length());//后缀名         if(ffHouZhui.equals("pdf")){//pdf文件          pdfCount++;          System.out.println(pdfCount+">>>>>>>>>"+fs[i].getName());               setup(fs[i]);         }        }      }   } public static void main(final String[] args) {      //递归显示C盘下所有文件夹及其中文件        File root = new File("C:/Users/Bonnie/Desktop/内容发布");     try {       showAllFiles(root);     } catch (Exception e) {       // TODO Auto-generated catch block      e.printStackTrace();     } }

}

备注：com.sun.pdfview，jar包需要下载