/**

* 把PDF所有页转换为JPG, 并返回所有图片的路劲集合

* @param inputFilePath

* 图片路径,具体到文件名

* @param outputFilePath

* 输出目录, 不需要文件名

* @return

* @throws IOException

*/

public static List Pdf2Jpg(String inputFilePath,

String outputFilePath) throws IOException {

List outputFilePathList = new ArrayList();

// load a pdf from a byte buffer

File file = new File(inputFilePath);

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 outputFilePath2 = outputFilePath + System.currentTimeMillis() + ".jpg";

FileOutputStream out = new FileOutputStream(outputFilePath2); // 输出到文件流

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

encoder.encode(tag); // JPEG编码

out.close();

outputFilePathList.add(outputFilePath2);

}

return outputFilePathList;

}