话不多说，直接上代码
public class PDF2IMAGE {public static void main(String[] args) { if(args!=null && args.length>=4) {String pdfPath = args[0];String imgPath = args[1];int dpi = Integer.parseInt(args[2]);int flag = Integer.parseInt(args[3]);File file = new File(pdfPath);if(file.isFile()&&file.exists()) { pdf2Image(pdfPath, imgPath, dpi,flag);}}//pdf2Image("D:/hvdGBFLoo.pdf", "D:/pdf", 300,2); } /*** * PDF文件转PNG图片 * @param PdfFilePath pdf完整路径 * @param imgFilePath 图片存放的文件夹 * @param dpi dpi越大转换后越清晰，相对转换速度越慢 * @param flag 页数 为0则转换全部页数* @return */ public static void pdf2Image(String PdfFilePath, String dstImgFolder, int dpi,int flag) { File file = new File(PdfFilePath); PDDocument pdDocument; try { String imgPDFPath = file.getParent(); int dot = file.getName().lastIndexOf('.'); String imagePDFName = file.getName().substring(0, dot); String imgFolderPath = null; if (dstImgFolder.equals("")) { imgFolderPath = imgPDFPath ;} else { imgFolderPath = dstImgFolder; } if (createDirectory(imgFolderPath)) { pdDocument = PDDocument.load(file);PDFRenderer renderer = new PDFRenderer(pdDocument); int pages = pdDocument.getNumberOfPages();if(flag > 0) {//大于0则打印具体页数if(flag<pages) {pages = flag;}}StringBuffer imgFilePath = null; for (int i = 0; i < pages; i++) { String imgFilePathPrefix = imgFolderPath+File.separator + imagePDFName; imgFilePath = new StringBuffer(); imgFilePath.append(imgFilePathPrefix); imgFilePath.append("-"); imgFilePath.append(String.valueOf(i + 1)); imgFilePath.append(".png"); File dstFile = new File(imgFilePath.toString()); BufferedImage image = renderer.renderImageWithDPI(i, dpi); ImageIO.write(image, "png", dstFile); }System.out.println("success"); } else { System.out.println("error:" + "creat" + imgFolderPath + "wrong"); } } catch (Exception e) { System.out.println("Exception");e.printStackTrace(); } } private static boolean createDirectory(String folder) { File dir = new File(folder); if (dir.exists()) { return true; } else { return dir.mkdirs(); } } }
本方案使用的是PDFbox jar包，使用的是JDK1.8。
编译好的可运行jar包已上传。
