public static List<String> pdfToImage(String pdfPath,int size) {
List<String> list = new ArrayList<>();
String imagePath;
try {
FileName String = pdfPath.substring (0, pdfPath.lastIndexOf ( "." ));
// image combining parameters
// total width
int width = 0 ;
// save the image in an RGB data
int [] singleImgRGB;
int = 0 shiftHeight ;
// save each image pixel values of
the BufferedImage ImageResult = null ;
// use PdfBox generates image
PDDocument pdDocument = PDDocument.load ( new new File (pdfPath));
The renderer PDFRenderer = new new PDFRenderer (pdDocument);
// cycle for each page
for ( int I = 0, len = pdDocument.getNumberOfPages (); I <len; I ++ ) {
IF (I == size) {
BREAK ;
}
Image the BufferedImage = renderer.renderImageWithDPI (I, 105 , ImageType.RGB);
int imageHeight = image.getHeight ();
int imageWidth = image.getWidth ();
// calculate the height and offset
// use the first image width ;
width = imageWidth;
// save each page picture pixel value
ImageResult = new new BufferedImage (width, imageHeight, BufferedImage.TYPE_INT_RGB);
// there is a high degree can be imageHeight * len, I extract a value here so no
singleImgRGB image.getRGB = (0, 0, width, imageHeight, null, 0, width);
// 写入流中
imageResult.setRGB(0, shiftHeight, width, imageHeight, singleImgRGB, 0, width);
File f = new File(fileName);
if (!f.exists()) {
f.mkdir();
}
imagePath = fileName + "/image" + i+1 + ".png";
File file = new File(imagePath);
if (!file.exists()) {
file.mkdir();
}
// 写图片
ImageIO.write(imageResult, "png", new File(imagePath));
list.add(imagePath);
}
pdDocument.close();
} catch (Exception e) {
e.printStackTrace ();
}
return list;
//OVER
}
