package pdf; import java.awt.Image; import java.awt.Rectangle; import java.awt.image.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.image.codec.jpeg.JPEGCodec; import com.sun.image.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 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); 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 image 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(); } } }