pdf转换成img

package  com.lyq.util;

import  java.awt.Image;
import  java.awt.Rectangle;
import  java.awt.image.BufferedImage;
import  java.io.File;
import  java.io.FileOutputStream;
import  java.io.RandomAccessFile;
import  java.nio.ByteBuffer;
import  java.nio.channels.FileChannel;

import  com.sun.image.codec.jpeg.JPEGCodec;
import  com.sun.image.codec.jpeg.JPEGImageEncoder;
import  com.sun.pdfview.PDFFile;
import  com.sun.pdfview.PDFPage;

public   class  PDF2IMG  {
     public  void setup(String pdfPath) throws Exception {
            File file = new File(pdfPath);
            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 image
                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 image
                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);
                String pdfFloder=pdfPath.substring(0,pdfPath.lastIndexOf(".pdf"));
                FileOutputStream out = new FileOutputStream(
                        pdfFloder+"_"+ i + ".jpg"); // 输出到文件流
                JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                encoder.encode(tag); // JPEG编码

                out.close();
                
            }
            pdffile=null;
            buf.clear();               
            file.delete();     
                
       } 

       public static void main(String[] args) {
           try {
                JavaAgent ja=new JavaAgent();
                String pafPath = "D:\\研磨设计模式.pdf";
                ja.setup(pafPath);
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }        
}

                                                                                     pdf 转换成img图片源代码

        该代码需要用到 PDFRenderer.jar ，请自行下载，或者到我的百度网盘下载： http://pan.baidu.com/s/168bzY