其实使用也不加简单，将架包导入，但是，我导入了架包后，有些使用的类方法没有，有导入了基础架包rt.jar
方法实现：
public ldc_pdftojpg(String pdfpath, String jpgpath) throws IOException {
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);
for (int i = 1; i <= pdffile.getNumPages(); i++) {
PDFPage page = pdffile.getPage(i);
Rectangle rect = new Rectangle(0, 0, (int) page.getBBox().getWidth(), (int) page.getBBox().getHeight());
Image img = page.getImage(rect.width, rect.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);
// 输出到文件流
FileOutputStream out = new FileOutputStream(jpgpath + i + ".jpeg");
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(tag); // JPEG编码
out.close();
}
}
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将pdf 文件路径和图片路径写入即可。
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test
fun = new ldc_pdftojpg(
"C:\\Users\\Administrator\\Desktop\\pdftojpg"+"\\"+"test.pdf",
"C:\\Users\\Administrator\\Desktop\\pdftojpg\\"
);
OK!