使用icepdf技术将pdf转tiff

package com.icepdf; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.List; import javax.media.jai.JAI; import javax.media.jai.PlanarImage; import org.icepdf.core.util.GraphicsRenderingHints; import com.sun.media.jai.codec.ImageCodec; import com.sun.media.jai.codec.ImageEncoder; import com.sun.media.jai.codec.TIFFEncodeParam; public class PdfToTiff { static { System.setProperty("com.sun.media.jai.disableMediaLib", "true"); } public String changePdfToTiff(String srcPath,String outPath) throws Exception { File fileIn = new File(srcPath); if(!fileIn.exists()){ throw new RuntimeException("源文件不存在！"); } File fileOut = new File(outPath); OutputStream os = new FileOutputStream(fileOut); if (!srcPath.endsWith(".pdf")) { throw new RuntimeException("请检查参数pdfName文件名是否以.pdf结尾！"); } org.icepdf.core.pobjects.Document document = new org.icepdf.core.pobjects.Document(); document.setFile(srcPath); float scale = 2f;//比例 float rotation = 0f;//旋转 List<BufferedImage> bufferImgList = new ArrayList<BufferedImage>(document.getNumberOfPages() - 1); for (int i = 0 + 1; i < document.getNumberOfPages(); i++) { BufferedImage image = (BufferedImage) document.getPageImage(i, GraphicsRenderingHints.SCREEN, org.icepdf.core.pobjects.Page.BOUNDARY_CROPBOX, rotation, scale); bufferImgList.add(image); } TIFFEncodeParam param = new TIFFEncodeParam();// 创建tiff编码参数类 param.setCompression(TIFFEncodeParam.COMPRESSION_DEFLATE);// 压缩参数 param.setExtraImages(bufferImgList.iterator());// 设置图片的迭代器 BufferedImage fimg = (BufferedImage) document.getPageImage(0, GraphicsRenderingHints.SCREEN, org.icepdf.core.pobjects.Page.BOUNDARY_CROPBOX, rotation, scale); PlanarImage fpi = JAI.create("mosaic", fimg); // 通过JAI的create()方法实例化jai的图片对象 ImageEncoder enc = ImageCodec.createImageEncoder("tiff", os, param); enc.encode(fpi);// 指定第一个进行编码的jai图片对象,并将输出写入到与此 document.dispose(); return ""; } public static void main(String[] args) { try { PdfToTiff pdfToTiff = new PdfToTiff(); System.out.println("start"); System.out.println(System.currentTimeMillis()); String srcPath="E:\\正式文件.pdf"; String outPath="E:\\aaa\\正式文件.tiff"; pdfToTiff.changePdfToTiff(srcPath,outPath); System.out.println(System.currentTimeMillis()); System.out.println("end"); } catch (Exception e) { e.printStackTrace(); } } }