Java使用icepdf将pdf文件按页转成图片

 org.icepdf.os
 icepdf-core
 6.1.2 
 
  
   javax.media
   jai-core
  
 

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;

import org.apache.commons.logging.LogFactory;
import org.icepdf.core.exceptions.PDFException;
import org.icepdf.core.exceptions.PDFSecurityException;
import org.icepdf.core.pobjects.Document;
import org.icepdf.core.pobjects.Page;
import org.icepdf.core.util.GraphicsRenderingHints;


public class test20160929 {
 public static final String FILETYPE_JPG = "jpg";

 /**
  * 
  * 将指定的pdf文件转换为指定路径的图片
  * 
  * @param filepath 原文件路径，例如d:/test/test.pdf
  * 
  * @param imagepath 图片生成路径，例如 d:/test/
  * 
  * @param zoom 缩略图显示倍数，1表示不缩放，0.3则缩小到30%
  * 
  */
 public static void tranfer(String filepath, String imagepath, float zoom) throws PDFException, PDFSecurityException, IOException {
  Document document = null;
  float rotation = 0f;
  document = new Document();
  document.setFile(filepath);
  int maxPages = document.getPageTree().getNumberOfPages();

  for (int i = 0; i