（word 转换为pdf） pdf 转换为图片

package coms;

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 javax.swing.SwingUtilities;
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() throws IOException {

??// load a pdf from a byte buffer
??File file = new File(
????"c://A.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://picture//"
???????+ 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 main(final String[] args) {
??SwingUtilities.invokeLater(new Runnable() {
???public void run() {
????try {
?????PdfToJpgTest.setup();
????} catch (IOException ex) {
?????ex.printStackTrace();
????}
???}
??});
?}

}

?

必须需要一个jar 包http://download.csdn.net/detail/klo0704/4041564